Breastfeeding and Type 2 Diabetes: Systematic Review and Meta-Analysis

Risk Assessment of Diabetes Mellitus During and After Pregnancy in Women With Prolactinomas

CONTEXT

Prolactin (PRL) is a crucial mediator of glucoinsulinemic metabolism.

OBJECTIVE

This work aims to dissect glucose metabolism during and after pregnancy in patients with prolactinomas.

METHODS

A total of 52 patients treated with cabergoline (CAB) were evaluated before conception, during pregnancy, and up to 10 years after delivery. During pregnancy, CAB was discontinued, while it was restarted in 57.7% of patients after delivery, due to recurrent hyperprolactinemia (RH). Hormonal (serum PRL) and metabolic (glycated hemoglobin A1c [HbA1c], fasting glucose [FG], glucose tolerance) parameters were assessed.

RESULTS

During pregnancy, PRL gradually increased, while FG remained stable. An inverse correlation between PRL and FG was found in the first (P = .032) and third (P = .048) trimester. PRL percentage increase across pregnancy was inversely correlated with third-trimester FG. Serum PRL before conception emerged as a predictive biomarker of third-trimester FG (t = 2.603; P = .048). Older patients with lower HbA1c in the first trimester and lower FG at 3 years post partum delivered infants with reduced birth weight. Breastfeeding up to 6 months correlated with lower FG at 4 and 10 years post partum. A positive correlation between BMI and FG at 10 years after delivery (P = .03) was observed, particularly in overweight/obese patients requiring higher CAB doses. Patients with RH who had to restart CAB showed shorter breastfeeding duration and higher FG at 2 years post partum.

CONCLUSION

Low PRL levels before pregnancy may be detrimental to FG during pregnancy. CAB duration and dose may influence long-term glucose tolerance, besides family history and BMI. Preconception metabolic management should be recommended to reduce the risk of gestational and type 2 diabetes mellitus.

Risk Factors Associated with Amputation for Patients with Diabetic Foot Ulcers: A Retrospective Study

Objective

Diabetic foot ulcer (DFU) and related amputation significantly contribute to morbidity rates. The objective of this study was to assess the risk factors correlated with amputation in Chinese patients with DFU.

Methods

A prospective study was implemented on DFU patients at Third Affiliated Hospital of Anhui Medical University from February 2016 to May 2024. Patients were categorized into two groups based on whether they underwent amputation: the amputation group (n = 33) and the non-amputation group (n = 29). A comparative analysis was conducted between two groups, focusing on demographic data, disease characteristics, and laboratory indicators. Binary and multivariate logistic regressions were employed to evaluate the risk factors associated with amputation. Receiver Operating Characteristic curve analysis was used to assess the risk factors in predicting amputation in patients with DFU.

Results

The incidence of history of amputation, duration of diabetes in the amputation group were significantly increased compared to the non-amputation group (P < 0.05). On the contrary, the red blood cell count, hemoglobin level, and hematocrit in the amputation group were significantly lower compared to the non-amputation group (P < 0.05). Moreover, in the bi-variable logistic regression analysis, the duration of diabetes, duration of DFU, history of amputation, and hemoglobin levels were significantly associated with amputation (P < 0.05). After controlling potential confounding factors in multiple logistic regression analysis, duration of DFU was identified as a determining factor for amputation (P < 0.05). Additionally, the values for the area under curve (AUC) in relation to the duration of diabetes, duration of DFU, history of amputation, and a combined panel in predicting the occurrence of amputation in patients with DFU were 0.890, 0.868, 0.730, and 0.916, respectively.

Conclusion

Our findings indicate that duration of DFU is an independent risk factor for amputation in patients with DFU.

Women with Gestational Diabetes Mellitus Have Greater Formula Supplementation in the Hospital and at Home Despite Intention to Exclusively Breastfeed

Background: Women with gestational diabetes mellitus (GDM) have lower rates of exclusive breastfeeding compared with women without diabetes. Objectives: To assess associations between GDM and breastfeeding intentions and attitudes, formula supplementation, reasons for formula supplementation, and knowledge of type 2 diabetes mellitus (T2DM) risk reduction associated with breastfeeding among U.S. mothers. Design/Methods: Participants completed an online survey assessing infant feeding knowledge, attitudes, and practices; demographics; and pregnancy-related medical history. Multivariable logistic regression was used to estimate adjusted odds ratios for formula supplementation in the hospital and at home. Results: Of 871 respondents, a smaller proportion of women with GDM compared with women without diabetes intended to exclusively breastfeed. There were no differences between groups in attitudes toward public breastfeeding, attitudes toward breastfeeding beyond infancy, or actual duration of any breastfeeding. Approximately one in four participants believed that breastfeeding mothers may be less likely to develop T2DM, regardless of GDM status. Among those who intended to exclusively breastfeed, GDM was associated with higher odds of formula supplementation in the hospital (adjusted odds ratio [OR] 1.75, 95% confidence interval [CI] 0.97-3.18) and at home (adjusted OR 2.02, 95% CI 1.05-3.89). "Medical reasons," which was reported as an important reason for formula supplementation, was reported more frequently by women with GDM. Conclusions: Women with GDM who intended to exclusively breastfeed had higher odds of in-hospital and at-home formula supplementation, cited medical reasons as a main reason for formula supplementation more often, and were largely unaware of T2DM risk reduction associated with breastfeeding.

Childhood Nutritional Factors and Cardiometabolic Outcomes at 9-11 y of Age: Findings from the ROLO Longitudinal Birth Cohort Study

BACKGROUND

Childhood represents a critical period of nutritional risk in the programming of later chronic disease. Few longitudinal studies have explored repeated measures of nutrition throughout the first decade of life in relation to preteen cardiometabolic outcomes.

OBJECTIVES

This research aimed to explore associations of early feeding practices (human milk exposure and duration and timing of introduction to solids) and childhood dietary quality and inflammatory scores (at 5 and 9-11 y and change during childhood) on preteen cardiometabolic outcomes.

METHODS

This is an analysis of children from the ROLO longitudinal birth cohort study (n = 399). Information on early feeding practices were obtained at postnatal study visits. Food frequency questionnaires collected maternal-reported dietary intakes for each child at 5 and 9-11 y of age. Healthy Eating Index (HEI)-2015 and the Children's Dietary Inflammatory Index (C-DII) scores were calculated. Anthropometry, body composition, blood pressure, heart rate, cardiorespiratory endurance, and blood biomarkers were obtained at 9-11 y. Crude and adjusted linear regression models examined nutritional exposure associations with preteen cardiometabolic outcomes.

RESULTS

In the adjusted model, any human milk exposure was associated with lower body fat (%) at 9-11 y (β: -2.86; 95% confidence interval [CI]: -5.46, -0.27; P = 0.03), than never receiving human milk. At 5 y, diet scores were favorably associated with lean mass at 9-11 y (P < 0.05 for both). Higher preteen HEI-2015 scores were associated with lower preteen leptin levels (tertile 3 compared with tertile 1-β: -2.92; 95% CI: -5.64, -0.21; P = 0.03). Diet quality significantly deteriorated (HEI-2015 score decreased) and became more proinflammatory (C-DII score increased) from 5 to 9-11 y of age. Diet quality/inflammation deterioration (compared with improvement) or overall change in dietary scores were not related to preteen cardiometabolic outcomes.

CONCLUSIONS

Exposure to human milk in early life was associated with lower preteen adiposity, irrespective of duration. Diet quality/inflammatory potential deteriorated between early childhood and the preteen years, highlighting a potential period for intervention.

The impact of exclusive breastfeeding on breastfeeding duration

BACKGROUND

While breastfeeding is globally recommended, its duration still represents a public health issue.

AIM

To examine the association between the period of exclusive breastfeeding (EBF) and the duration of overall human milk nutrition, and to identify determinants associated with the duration of EBF and overall human milk nutrition length.

STUDY DESIGN

The presented study is a cross-sectional study. A total of 209 healthy Polish women of Caucasian origin, aged 19-42 years, who were the mother of a child aged 3-12 months, were enrolled in the study. Data were collected from 2018 to 2020 using an anonymous questionnaire. Statistical analyses included one way ANOVA and liner regression.

RESULTS

After birth almost all newborns were exclusively breastfed (96.7 %), but the supply of mother's milk declined as the children's ages increased. The duration of breastfeeding is strongly associated with EBF, especially until the child is six months old (p < 0.001). Mother's breastfeeding self-efficiency and her will for breastfeeding, comfortable latch, younger infant age, avoiding of a pacifier and excluding additional food may explain 36 % of variation of EBF duration (p < 0.001) and could be useful information for exclusive breastfeeding support.

CONCLUSIONS

The practice of exclusive breastfeeding strongly affects overall breastfeeding duration. The promotion of exclusive breastfeeding, rather than of overall breast milk supply, is crucial.

Association between breastfeeding duration and BMI, 2009-2018: a population-based study

Background

In the 21st century, childhood overweight and obesity have become major public health issues worldwide. Previous studies have shown that breastfeeding helps prevent overweight or obesity in children. Despite the significant advantages of breastfeeding, the global exclusive breastfeeding rate for infants under 6 months old is only 40%, while in the United States, the rate is only 25%. The aim of this study is to explore the relationship between breastfeeding duration and BMI in children aged 2 to 6 in the United States, and to raise awareness of breastfeeding.

Methods

A cross-sectional study included 2,769 participants between the ages of 2 and 6 from a sample that represented the entire NHANES 2009-2018. Data was analyzed using EmpowerStats, (www.empowerstats.com) linear regression as well as Chi-square test, t-tests, multivariate regression analysis and smooth cure fitting were done.

Results

Breastfeeding duration long-term group exhibited a statistically significant negative association with BMI, with a regression coefficient of -0.21 (P < 0.05). The continuous analysis of breastfeeding duration by tertile also demonstrate a statistically significant negative association with BMI. Subgroup analysis revealed that the potential benefits of breastfeeding on BMI were more obvious in low-income environments and maternal age 18 to 35 years, with a regression coefficient of -0.57 and -0.24, respectively (all P < 0.05).

Conclusion

The findings emphasize the importance of breastfeeding in reducing childhood overweight/obesity and preventing associated diseases, both in clinical and public health settings.

Breastfeeding outcomes at 3 months for women with diabetes in pregnancy: Findings from the Diabetes and Antenatal Milk Expressing randomized controlled trial

BACKGROUND

Women with diabetes in pregnancy have decreased exclusivity and duration of breastfeeding compared with women without diabetes, and their infants are at increased risk of hypoglycemia. Clinicians often suggest pregnant women with diabetes to express breastmilk, and studies have reported increased breastfeeding exclusivity in the early postnatal period for patients who have expressed. Little is known about longer term outcomes. We investigated whether advising low-risk women with diabetes in pregnancy to express beginning at 36 weeks of pregnancy increased exclusivity and maintenance of breastfeeding at 3 months.

METHODS

We conducted a multicenter, two-group, randomized controlled trial at six hospitals in Melbourne, Australia, between 2011 and 2015. Women were randomized to either standard maternity care or advised to hand express for 10 min twice daily, in addition to standard care. Women were telephoned at 12-13 weeks postpartum and asked a series of questions about feeding their baby, perceptions of their milk supply, and other health outcomes.

RESULTS

Of 631 women in the study, data for 570 (90%) were analyzed at 12-13 weeks. After adjustment, we found no evidence that women allocated to antenatal expressing were more likely to be giving only breastmilk (aRR 1.07 [95% CI 0.92-1.22]) or any breastmilk (aRR 0.99 [95% CI 0.92-1.06]) at 12-13 weeks postpartum compared with women in the standard care group.

CONCLUSION

While the practice of antenatal expression for low-risk women with diabetes during pregnancy is promising for increasing exclusivity of breastmilk feeding in hospital, at 12-13 weeks, there was no association with breastfeeding outcomes.

Associations of Placental Inflammation and Oxidative Stress Biomarkers with Glucolipid Metabolism in Children: A Birth Cohort Study in China

BACKGROUND

The maternal intrauterine immune environment may affect offspring long-term health. We aimed to investigate the association between the intrauterine placental immunological milieu and glycolipid metabolic health in children.

METHODS AND RESULTS

This study enrolled 1803 mother-child pairs from the Ma'anshan birth cohort (2013-2014). Placental mRNA expression of inflammatory cytokines (interleukin-1β [IL-1β], IL-10, monocyte chemoattractant protein-1, tumor necrosis factor-α, IL-4, IL-6, IL-8, C-reactive protein, and interferon-γ) and oxidative stress biomarkers (heme oxygenase-1, hypoxia-inducible factor-1alpha, and glucose-related protein 78) was quantified using real-time quantitative polymerase chain reaction. Fasting blood glucose, insulin, triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and total cholesterol were assessed at 5 to 6 years old. Statistical analyses included multiple linear regression, binary logistic regression, restricted cubic spline model, and the Bayesian kernel machine regression model. Placental inflammatory cytokines (IL-1β, monocyte chemoattractant protein-1, C-reactive protein, IL-6, IL-8, IL-10) and oxidative stress biomarkers (heme oxygenase-1, hypoxia-inducible factor-1alpha, glucose-related protein 78) showed positive associations with children's fasting blood glucose levels. Heme oxygenase-1 and glucose-related protein 78 exhibited negative correlations with children's fasting insulin levels. Elevated IL-6, heme oxygenase-1, hypoxia-inducible factor-1alpha, and glucose-related protein 78 were associated with increased risk of prediabetes in children. Overall upregulation of placental proinflammatory cytokines and oxidative stress factors mRNA expression correlated with higher prediabetes risk in children. Bayesian kernel machine regression analysis indicated a joint positive effect of the 12 placental inflammation and oxidative stress mixtures on children's risk of high fasting blood glucose.

CONCLUSIONS

This exploratory study underscores significant correlations between maternal intrauterine placental inflammation, oxidative stress markers, and offspring fasting blood glucose and insulin levels. These findings highlight the potential role of intrauterine holistic immunity in shaping offspring glucose metabolism health.

Breastfeeding and risk of food allergy and allergic rhinitis in offspring: a systematic review and meta-analysis of cohort studies

The association between breastfeeding and the occurrence of allergic rhinitis (AR) and food allergy (FA) in offspring remains inconclusive. This review aims to comprehensively explore the potential relationships between various patterns and durations of breastfeeding and allergic diseases in offspring. We systematically searched PubMed, EMBASE, Cochrane, WOS databases, and Google Scholar for observational studies published up to March 30, 2023, that investigated the link between breastfeeding and allergies in offspring. The quality of the studies was assessed using the Newcastle-Ottawa Scale (NOS) and Joanna Briggs Institute (JBI). Pooled odds ratios (OR) and 95% confidence intervals (95% CI) were calculated employing an appropriate model based on the degree of heterogeneity. A total of 68 studies, encompassing 772,142 children, were ultimately included. The findings indicated that breastfeeding for more than 6 months was associated with a reduced risk of AR (OR = 0.88, 95% CI: 0.79 to 0.98) but posed a risk for FA (OR = 1.69, 95% CI: 1.27 to 2.25). Exclusive breastfeeding exhibited a protective effect against AR (OR = 0.94, 95% CI: 0.90 to 0.97), whereas non-breastfeeding was identified as a risk factor for AR (OR = 1.48; 95% CI: 1.03 to 2.12). No significant association was observed between breastfeeding patterns and FA.

CONCLUSION

Breastfeeding for more than 6 months proves to be an effective preventive measure against AR. However, large prospective high-quality studies are needed to investigate the potential risk of FA in children with prolonged breastfeeding.

WHAT IS KNOWN

• The impact of breastfeeding on allergic rhinitis and food allergy in offspring is controversial. • Previous meta-analyses fail to prove the effect of breastfeeding on food allergy in offspring of all ages.

WHAT IS NEW

• Breastfeeding for more than 6 months proves to be an effective preventive measure against AR. However, it potentially elevates the risk of FA in children. Non-breastfeeding is linked to an increased risk of AR in children, but there is no evidence of an association between breastfeeding patterns and FA in children. • The impact of breastfeeding on allergic rhinitis and food allergy in offspring may vary with the time and pattern of breastfeeding.

Maternal metabolic conditions as predictors of breastfeeding outcomes: Insights from an Australian cohort study

INTRODUCTION

Breastfeeding represents an important opportunity to optimize health outcomes for both mother and infant, particularly in the context of maternal metabolic conditions such as diabetes and polycystic ovary syndrome. However, evidence suggests that women affected by these conditions breastfeed at reduced rates and durations. Our aim was to use the large, prospective, community-based Australian Longitudinal Study on Women's Health (ALSWH) to conduct an in-depth exploratory analysis of breastfeeding outcomes in Australian women affected by key maternal metabolic conditions.

MATERIAL AND METHODS

Data from 12 920 pregnancies to 5605 women from the 1973-1978 birth cohort of the ALSWH were examined. Univariable and multivariable regression using generalized estimating equation models were applied to assess breastfeeding initiation and duration (outcome measures) in relation to key self-reported maternal metabolic diagnoses (pre-gestational type 1 and type 2 diabetes, gestational diabetes, and polycystic ovary syndrome; main explanatory variables). Key sociodemographic and clinical covariates were also considered.

RESULTS

Results showed no significant association between specific maternal metabolic diagnoses (pre-gestational or gestational diabetes, or polycystic ovary syndrome) and breastfeeding outcomes. However, maternal body mass index emerged as a key predictor of suboptimal breastfeeding outcomes. Pregnancies affected by maternal obesity were associated with a 2.1-fold increase in the odds of not initiating breastfeeding, after adjusting for other key variables (95% CI 1.67 to 2.60, p < 0.01). Maternal overweight and obesity were, respectively, associated with an adjusted 1.4-fold (95% CI 1.20 to 1.55, p < 0.01) and 1.8-fold increase (95% CI 1.60 to 2.10, p < 0.01) in the odds of a breastfeeding duration less than 6 months.

CONCLUSIONS

Maternal obesity, rather than any specific maternal metabolic condition, appears to be a key predictor of breastfeeding outcomes in Australian women.

Risk of Fat Mass- and Obesity-Associated Gene-Dependent Obesogenic Programming by Formula Feeding Compared to Breastfeeding

It is the purpose of this review to compare differences in postnatal epigenetic programming at the level of DNA and RNA methylation and later obesity risk between infants receiving artificial formula feeding (FF) in contrast to natural breastfeeding (BF). FF bears the risk of aberrant epigenetic programming at the level of DNA methylation and enhances the expression of the RNA demethylase fat mass- and obesity-associated gene (FTO), pointing to further deviations in the RNA methylome. Based on a literature search through Web of Science, Google Scholar, and PubMed databases concerning the dietary and epigenetic factors influencing FTO gene and FTO protein expression and FTO activity, FTO's impact on postnatal adipogenic programming was investigated. Accumulated translational evidence underscores that total protein intake as well as tryptophan, kynurenine, branched-chain amino acids, milk exosomal miRNAs, NADP, and NADPH are crucial regulators modifying FTO gene expression and FTO activity. Increased FTO-mTORC1-S6K1 signaling may epigenetically suppress the WNT/β-catenin pathway, enhancing adipocyte precursor cell proliferation and adipogenesis. Formula-induced FTO-dependent alterations of the N6-methyladenosine (m6A) RNA methylome may represent novel unfavorable molecular events in the postnatal development of adipogenesis and obesity, necessitating further investigations. BF provides physiological epigenetic DNA and RNA regulation, a compelling reason to rely on BF.

Impact of psychosexual development theory-based breastfeeding education on infant feeding attitudes and knowledge of primiparous mothers: A randomized controlled study

PURPOSE

The first year of life is known as the "Oral Stage" in psychosexual development theory. We investigated the impact of psychosexual development theory-based breastfeeding education on primiparous mothers' feeding attitudes and behaviors.

DESIGN AND METHODS

We conducted this randomized controlled study at a baby-friendly hospital between December 2022 and July 2023. Participants were randomized to intervention (n = 21) and control (n = 19) groups. All participants received the same standard discharge education in the hospital, and the intervention group received additional psychosexual development theory-based breastfeeding education. Data collection for both groups involved conducting face-to-face and telephone interviews, utilizing the Personal Information Form, IOWA Infant Feeding Attitude Scale (IIFAS), Breastfeeding Form, and Psychosexual Theory and Breastfeeding Knowledge Form. The study was recorded in the Clinicaltrials.gov PRS system (ID: NCT06009120).

RESULTS

The mean IIFAS score of mothers in the intervention group was 76.23 ± 4.10, while mothers in the control group was 66.31 ± 5.72, which was statistically significant (p < .001). Additionally, mothers in the intervention group fed their babies with formula less often on days 5 to 8 after birth (p < .05) and breastfed more frequently and for longer durations on days 3 to 8 compared to the control group (p < .05).

CONCLUSIONS

Psychosexual development theory-based breastfeeding education reduced the use of formula, increased mothers' attitudes towards breastfeeding, and increased the duration and frequency of breastfeeding.

PRACTICE IMPLICATION

Integrating psychosexual development theory-based breastfeeding education into routine maternal and infant care may enhance breastfeeding attitudes and practices, potentially improving infant feeding outcomes.

Proteomic analysis of milk fat globule membrane proteins in mature human milk of women with and without gestational diabetes mellitus

Milk fat globule membrane proteins (MFGMP) in human milks have positive effects on infant's health. As gestational diabetes mellitus (GDM) causes variations in MFGMP, it is essential to understand the effects of GDMon MFGMP. This study aims to investigate and compare the MFGMP (>3 months postpartum) of GDM and non-GDM (NGDM) women using four-dimensional-data-independent-acquisition proteomics technology. Principal component analysis shows significant differences in the MFGMP of GDM and NGDM women. A total of 4747 MFGMP were identified in maturehuman milk of GDM and NGDM women. Among these proteins, 174 differentially expressed proteins (DEPs) were identified in MFGM of GDM and NGDM women. Albumin (FC = 7.96) and transthyretin (FC = 2.57) which are related to insulin resistance and involved in thyroid hormone synthesis, are significantly up-regulated in MFGMP of GDM mothers indicating insulin resistance, imbalance of glucose homeostasis and poor glucose metabolism might persist in postpartum period.

Relationship between Receipt of the Samples of Breast Milk Substitutes in Hospitals and Breastfeeding Practice in Japan

Objective

This study estimated the percentage of mothers who received samples of breast milk substitutes at medical facilities and examined the relationship between receipt of the samples and breastfeeding practices in Japan.

Methods

We used the data from the "The Japan COVID-19 and Society Internet Survey (JACSIS)" conducted in 2021. Two groups of mothers were analyzed: mothers 0-5 months postpartum (n = 1,412) and mothers 5-12 months postpartum (n = 2,045). Logistic regression analysis was conducted with the practice of exclusive breastfeeding as the dependent variable and the receipt of the sample as the explanatory variable. Exclusive breastfeeding was defined in different ways for each group: "exclusive breastfeeding under five months" as measured by 24-hour recall for mothers 0-5 months postpartum, and "exclusive breastfeeding for the first five months" as defined by asking mothers 5-12 months postpartum when they first fed infant formula or baby food and when they finished breastfeeding.

Results

The proportion of mothers who received the samples was 82.4%. We found that mothers who received the samples were found to be less likely to continue "exclusive breastfeeding under five months" (odds ratio: 0.71, 95% confidence interval [CI]: 0.51-0.98). In addition, a similar trend was found in a subsample analysis restricted to mothers who intended to breastfeed during pregnancy (odds ratio: 0.62, 95% CI: 0.40-0.94).

Conclusions

This study showed that more than 80% of mothers had received the samples of breast milk substitutes, and that receipt of the samples decreased the probability of their practicing exclusive breastfeeding. Regulating distribution of the samples at medical facilities is necessary to prevent interruptions of exclusive breastfeeding.

Association of Food Security With Breastfeeding Practices: A Scoping Review

Breastfeeding is the fundamental, physiological, and psychosocial process by which the mother feeds the newborn. Early initiation of breastfeeding is recommended within the first hour of life and exclusive breastfeeding up to six months of age due to its optimal contribution of nutrients for the development of the newborn. Despite this, there are factors that affect this process which involve the nutritional, physical, and psychological state of the mother, such as food security or food insecurity, however, it is unknown if it will have a decisive impact on these factors concerning the cessation of breastfeeding or total duration of breastfeeding. This study is an in-depth review of the available information related to food security as a determinant in breastfeeding practices. We did a scoping review between December 2022 - January 2023. The principal inclusion criteria were: the use of the English language, qualitative and quantitative methods, and analytical studies. All the articles were available in full text and the manuscripts ranged from 1997 and 2022. Twelve studies were included: eight quantitative, two qualitative, and two mixed. In the quantitative studies, significant positive and negative associations were found between food insecurity, exclusive breastfeeding, early initiation of breastfeeding, cessation of breastfeeding, and total duration of breastfeeding. For their part, qualitative and mixed studies describe that women with severe food insecurity tend to feel weak and may have a poor perception of their diet and, consequently, their breastfeeding practices are lower. Moreover, there are qualitative studies that mention that the higher the food insecurity, the more frequently breastfeeding occurs. The inconsistency in the results may be due to factors involving the characteristics of each population, the instrument used to measure food security, and the variables by which the models were adjusted. It is necessary to carry out more studies on the subject since it is obvious that the relationship between the variables needs to be clarified.

Trends in social inequality in breastfeeding duration in Denmark 2002-2019

AIMS

The aim of the present study was to analyse trends in full breastfeeding for at least 4 months across socioeconomic position in Denmark over a 17-year-long period from 2002 to 2019 using parental education as the indicator of socioeconomic position.

METHODS

The study used data on full breastfeeding collected between 2002 and 2019 by community health nurses in the collaboration Child Health Database, n=143,075. Data were linked with five categories of parental education from population registers. Social inequality was calculated as both the relative (odds ratio) and absolute social inequality (slope index of inequality). A trend test was conducted to assess changes in social inequality over time.

RESULTS

A social gradient in full breastfeeding was found for the entire study period. The odds ratio for not being fully breastfed for at least 4 months ranged from 3.30 (95% confidence interval 2.83-3.84) to 5.09 (95% confidence interval 4.28-6.06) during the study period for infants of parents with the lowest level of education (primary school) compared with infants of parents with the highest level of education (5+ years of university education). The slope index of inequality was between -38.86 and -48.81 during the entire study period, P=0.80. This indicated that both the relative and absolute social inequality in full breastfeeding to at least 4 months of age was unchanged in the study period from 2002 to 2019.

CONCLUSIONS

This study showed a persistent relative and absolute social inequality in full breastfeeding for at least 4 months from 2002 to 2019 in Denmark.

Postoperative Insulin Dose for Cardiac Artery Bypass Graft and Other Cardiac Surgeries in Patients with Type 2 Diabetes: A Retrospective Study

Purpose

Recommendations on perioperative glycemic control in cardiac surgery are based on coronary artery bypass graft surgery (CABG), though coronary artery disease and valvular disease are pathologically distinct. We aimed to compare the postoperative insulin requirement between CABG and other cardiac surgeries in type 2 diabetic patients and identify predictive factors for the maximum postoperative insulin dose.

Patients and Methods

We retrospectively included 60 Japanese patients with diabetes/glucose intolerance (HbA1c > 37 mmol/mol [5.6%]) who were hospitalized for cardiovascular surgery between April 2017 and March 2019. We categorized the subjects into the CABG and non-CABG groups, and performed subgroup analysis on patients who received postoperative insulin therapy.

Results

The CABG group required a significantly higher insulin dose on postoperative days 2, 5, 6, and 7, and a significantly higher maximum postoperative insulin dose (24.6 U vs 9.7 U, P < 0.001) than the non-CABG group. Multivariate linear regression analyses showed that the independent determinants of the maximum postoperative insulin dose were HbA1c and duration of diabetes in the non-CABG group, and HbA1c in the CABG group.

Conclusion

CABG had a higher postoperative insulin requirement than other cardiovascular surgeries; early aggressive insulin therapy is indicated, especially for patients with higher HbA1c levels/longer duration of diabetes.

Influence of gestational weight gain on the nutritional status of offspring at birth and at 5 years of age

OBJECTIVE

To determine the influence of pre-pregnancy maternal BMI and increases in maternal weight during pregnancy on perinatal and child outcomes at birth and at 5 years.

RESEARCH DESIGN/SETTING

A prospective cohort study was conducted between November 2016 and December 2021. The participants were a total of 115 women-child dyads, selected from among pregnant women receiving routine prenatal care in different health centres belonging to 2 health districts. Follow-ups were conducted with the women during pregnancy and with their children during the 10 days after birth and at 5 years.

FINDINGS

The total weight gain during pregnancy is influenced by an inadequate pre-pregnancy BMI (0.03; 95 % CI, 0.004 - 0.25; P=.001) and a greater increase in maternal BMI during the first and second term of pregnancy. A greater increase in BMI during pregnancy was associated with higher breastfeeding rates both in the short term (1.21; 95 % CI, 1.01-1.44; P = 0.04) and the long term (12 months: 1.30; 95 % CI, 1.02 - 1.67; P = 0.04; 24 months: 1.30; 95 % CI, 1.02 - 1.69; P = 0.04). No links were found between gains in maternal weight and the weight of the newborn, nor between maternal weight and/or pre-pregnancy BMI with the nutritional status of the child.

KEY CONCLUSIONS

After studying these results, it was concluded that promoting and implementing health and education policies focused on enhancing maternal nutritional status is essential to improve the nutritional status of children.

IMPLICATIONS FOR PRACTICE

Healthy gestational weight gain (GWG) is an important issue to be addressed by the midwife in primary care, both in the preconception period and throughout pregnancy. As a result, it is important that the midwife is trained and has the appropriate resources and tools to work with pregnant women individually and collectively. In addition to paying attention to overweight and obese pregnant women, the midwife should also pay attention to women with a normal BMI, as they seem to have greater difficulty in maintaining a healthy weight gain. Another line of intervention to be addressed is breastfeeding (BF), where the midwife should be the main point of reference from the beginning of this process, taking into account the relationship between BMI and BF.

Women's reproductive risk and genetic predisposition in type 2 diabetes: A prospective cohort study

OBJECTIVE

To assess synergistic effects of reproductive factors and gene-reproductive interaction on type 2 diabetes (T2D) risk, also the extent to which the genetic risk of T2D can be affected by reproductive risk.

METHODS

84,254 women with genetic data and reproductive factors were enrolled between 2006 and 2010 in the UK Biobank. The reproductive risk score (RRS) was conducted based on 17 reproductive items, and genetic risk score (GRS) was based on 149 genetic variants.

RESULTS

There were 2300 (2.8 %) T2D cases during an average follow-up of 4.49 years. We found a significant increase in T2D risk across RRS categories (Ptrend < 0.001). Compared with low reproductive risk, high-mediate (adjusted hazard ratio [aHR] 1.38, 95 % CI 1.20-1.58) and high (aHR 1.84, 95 % CI 1.54-2.19) reproductive risk could increase the risk of T2D. We further observed a significant additive interaction between reproductive risk and genetic predisposition. In the situation of high genetic predisposition, women with low reproductive risk had lower risk of T2D than those with high reproductive risk (aHR 0.47, 95 % CI 0.30-0.76), with an absolute risk reduction of 2.98 %.

CONCLUSIONS

Our novo developed RRS identified high reproductive risk is associated with elevated risk of women's T2D, which can be magnified by gene-reproductive interaction.

Promoting maternal-child health by increasing breastfeeding rates: a National Canadian Baby-Friendly Initiative Quality Improvement Collaborative Project

While breastfeeding has long been an important, globally recognized aspect of population health, disparities exist across Canada. The Baby-Friendly Initiative (BFI) is a WHO/UNICEF best-practice program that helps ensure families receive evidence-based perinatal care and is associated with improved breastfeeding rates. However, <10% of hospitals in Canada are designated as 'Baby-Friendly'.The Breastfeeding Committee for Canada (BCC) aimed to increase the number of hospitals that moved towards BFI designation by implementing a National BFI Quality Improvement Collaborative Project. Key activities included (1) implementing and evaluating the BFI Project with 25 hospital teams across Canada and (2) making recommendations for scaling up BFI in Canada.As of December 2023, three hospitals in the BFI Project have attained designation and six have started the official process towards designation with the BCC. Breastfeeding initiation rates remained high and stable (>80%); however, breastfeeding exclusivity rates did not meet targets. All BFI care indicators improved across participating facilities. All skin-to-skin indicators improved, with rates of immediate and sustained skin-to-skin meeting targets of >80% for vaginal births. BFI care indicators of documented assistance and support with breastfeeding within 6 hours of birth, rooming-in and education about community supports also met target levels. Leadership buy-in, parent partner engagement and collaborative activities of workshops, webinars and mentoring with BFI Project leadership were viewed as valuable.This BFI Project demonstrated that hospitals could successfully implement Baby-Friendly practices in various Canadian settings despite challenges introduced by the COVID-19 pandemic. Indicators collected as part of this work demonstrate that delivery of Baby-Friendly care improved in participating facilities. Sustainability and scaling up BFI implementation in both hospitals and community health services across Canada through implementation of a BFI Coach Mentor Program is ongoing to enable continued progress and impact on breastfeeding and maternal-child health.

Black carbon particles in human breast milk: assessing infant's exposure

Background/Aim

Human breast milk is the recommended source of nutrition for infants due to its complex composition and numerous benefits, including a decline in infection rates in childhood and a lower risk of obesity. Hence, it is crucial that environmental pollutants in human breast milk are minimized. Exposure to black carbon (BC) particles has adverse effects on health; therefore, this pilot study investigates the presence of these particles in human breast milk.

Methods

BC particles from ambient exposure were measured in eight human breast milk samples using a white light generation under femtosecond illumination. The carbonaceous nature of the particles was confirmed with BC fingerprinting. Ambient air pollution exposures (PM2.5, PM10, and NO2) were estimated using a spatial interpolation model based on the maternal residential address. Spearman rank correlation coefficients were obtained to assess the association between human breast milk's BC load and ambient air pollution exposure.

Results

BC particles were found in all human breast milk samples. BC loads in human breast milk were strongly and positively correlated with recent (i.e., 1 week) maternal residential NO2 (r = 0.79; p = 0.02) exposure and medium-term (i.e., 1 month) PM2.5 (r = 0.83; p = 0.02) and PM10 (r = 0.93; p = 0.002) exposure.

Conclusion

For the first time, we showed the presence of BC particles in human breast milk and found a robust association with ambient air pollution concentrations. Our findings present a pioneering insight into a novel pathway through which combustion-derived air pollution particles can permeate the delicate system of infants.

Establishing associated risk factors, including fungal and parasitic infections among Malaysians living with schizophrenia

The aetiology of schizophrenia is multifactorial, and the identification of its risk factors are scarce and highly variable. A cross-sectional study was conducted to investigate the risk factors associated with schizophrenia among Malaysian sub-population. A total of 120 individuals diagnosed with schizophrenia (SZ) and 180 non-schizophrenic (NS) individuals participated in a questionnaire-based survey. Data of complete questionnaire responses obtained from 91 SZ and 120 NS participants were used in statistical analyses. Stool samples were obtained from the participants and screened for gut parasites and fungi using conventional polymerase chain reaction (PCR). The median age were 46 years (interquartile range (IQR) 37 to 60 years) and 35 years (IQR 24 to 47.75 years) for SZ and NS respectively. Multivariable binary logistic regression showed that the factors associated with increased risk of SZ were age, sex, unemployment, presence of other chronic ailment, smoking, and high dairy consumption per week. These factors, except sex, were positively associated with the severity of SZ. Breastfed at infancy as well as vitamin and supplement consumption showed a protective effect against SZ. After data clean-up, fungal or parasitic infections were found in 98% (39/42). of SZ participants and 6.1% (3/49) of NS participants. Our findings identified non-modifiable risk factors (age and sex) and modifiable lifestyle-related risk factors (unemployment, presence of other chronic ailment, smoking, and high dairy consumption per week) associated with SZ and implicate the need for medical attention in preventing fungal and parasitic infections in SZ.

Breastfeeding and less healthy beverage intake during the first year of life

BACKGROUND AND OBJECTIVES

Breastfeeding during infancy is associated with healthier beverage consumption later in childhood, but little is known about this relation during infancy. This was a longitudinal study of breastfeeding and less healthy beverage consumption during the first year of life, in a birth cohort study conducted 2013-2018 in the Southeastern United States (n = 666).

METHODS

We estimated monthly rates of 100% juice and sugar-sweetened beverage (SSB) consumption comparing infants who were exclusively or partially breastfed, versus those who were not, in multivariable adjusted models.

RESULTS

Mothers had a median age of 26.5 years, 71% identified as Black/African-American, and 61% reported household incomes <$20 000/year. The prevalence of any breastfeeding during the first month was 78.2% and 18.7% at month 12. By age 12 months, infants consumed juice a mean (SD) 9.1 (10.1) times per week and SSBs 3.6 (9.5) times per week. Breastfed infants had a 38% lower incidence rate of weekly juice consumption (95% CI 52%, 15%, p = 0.003) and a 57% lower incidence rate of weekly SSB consumption (95% CI 76%, 22%, p = 0.006), compared with infants who were not breastfed.

CONCLUSIONS

Research on early-life correlates of dietary health should focus on the earliest beverages, given evidence that consumption of obesogenic beverages may begin prior to age 1 year.

Opportunistic assessment of ischemic heart disease risk using abdominopelvic computed tomography and medical record data: a multimodal explainable artificial intelligence approach

Current risk scores using clinical risk factors for predicting ischemic heart disease (IHD) events-the leading cause of global mortality-have known limitations and may be improved by imaging biomarkers. While body composition (BC) imaging biomarkers derived from abdominopelvic computed tomography (CT) correlate with IHD risk, they are impractical to measure manually. Here, in a retrospective cohort of 8139 contrast-enhanced abdominopelvic CT examinations undergoing up to 5 years of follow-up, we developed multimodal opportunistic risk assessment models for IHD by automatically extracting BC features from abdominal CT images and integrating these with features from each patient's electronic medical record (EMR). Our predictive methods match and, in some cases, outperform clinical risk scores currently used in IHD risk assessment. We provide clinical interpretability of our model using a new method of determining tissue-level contributions from CT along with weightings of EMR features contributing to IHD risk. We conclude that such a multimodal approach, which automatically integrates BC biomarkers and EMR data, can enhance IHD risk assessment and aid primary prevention efforts for IHD. To further promote research, we release the Opportunistic L3 Ischemic heart disease (OL3I) dataset, the first public multimodal dataset for opportunistic CT prediction of IHD.

Importance of human milk for infants in the clinical setting: Updates and mechanistic links

INTRODUCTION

Human milk (HM) is the optimal source of nutrition for infants and has been implicated in multiple aspects of infant health. Although much of the existing literature has focused on the individual components that drive its nutrition content, examining HM as a biological system is needed for meaningful advancement of the field. Investigation of the nonnutritive bioactive components of HM and the maternal, infant, and environmental factors which affect these bioactives is important to better understand the importance of HM provision to infants. This information may inform care of clinical populations or infants who are critically ill, hospitalized, or who have chronic diseases and may benefit most from receiving HM.

METHODS

In this narrative review, we reviewed literature examining maternal and infant influences on HM composition with a focus on studies published in the last 10 years that were applicable to clinical populations.

RESULTS

We found multiple studies examining HM components implicated in infant immune and gut health and neurodevelopment. Additional work is needed to understand how donor milk and formula may be used in situations of inadequate maternal HM. Furthermore, a better understanding of how maternal factors such as maternal genetics and metabolic health influence milk composition is needed.

CONCLUSION

In this review, we affirm the importance of HM for all infants, especially clinical populations. An understanding of how HM composition is modulated by maternal and environmental factors is important to progress the field forward with respect to mechanistic links between HM biology and infant health outcomes.

Breastfeeding in primiparous women - expectations and reality: a prospective questionnaire survey

BACKGROUND

Breastfeeding provides the optimal nutrition for infants and offers numerous benefits for both mother and child. The World Health Organisation recommends exclusive breastfeeding during the first 6 months of life and the introduction of complementary feeding between the fifth and seventh months of life. There is a discrepancy between breastfeeding recommendations and the actual duration of breastfeeding. The aim of this study was to analyse breastfeeding behaviour in primiparous women in order to be able to provide support for mothers.

METHODS

In this prospective, questionnaire-based study conducted between 2020 and 2022, primiparous women were asked to complete three questionnaires at three defined survey time points (routine prepartum presentation, postpartum hospitalization, completed sixth month of life).

RESULTS

A total of 140 women were included and returned all three questionnaires. Fifty-eight percent performed breastfeeding exclusively at least until their baby had reached the age of 6 months, whereas 20% already stopped within the first 6 months. The main reasons given for early cessation were insufficient milk supply and inadequate infant weight gain. A comprehensive level of prepartum knowledge had a significant positive effect on participants' sense of confidence with breastfeeding. Sociodemographic factors such as age and educational level were also associated with breastfeeding behaviour, but significant corresponding differences in the duration of breastfeeding were not observed. Women with postpartum midwifery care breastfed significantly longer (p < 0.05).

CONCLUSIONS

Breastfeeding behaviour and duration are influenced by multiple factors. Although certain sociodemographic factors are unalterable, comprehensive prepartum knowledge transfer and postpartum midwifery care have a positive impact on breastfeeding behaviour.

TRIAL REGISTRATION

The study was retrospectively registered at the German Clinical Trials Register (Deutsches Register Klinischer Studien, DRKS) on 6 December 2022 (DRKS00030763).

Breastfeeding continuation is associated with trait mindfulness but not with trajectories of postpartum depressive symptoms

OBJECTIVE

The WHO recommends breastfeeding for at least six months as breastfeeding has many benefits for both infant and mother. The association of breastfeeding continuation with trait mindfulness during pregnancy and trajectories of postpartum depressive symptoms has not been examined yet. The current study aimed to assess this association using cox regression analysis.

DESIGN, SETTING AND PARTICIPANTS

The current research is part of a large longitudinal prospective cohort study following women from 12 weeks of pregnancy onwards in the South-East part of the Netherlands.

MEASUREMENTS

A total of 698 participants filled out the Three Facet Mindfulness Questionnaire-Short Form (TFMQ-SF) at 22 weeks of pregnancy and completed both the Edinburgh Postnatal Depression Scale (EPDS) and questions on breastfeeding continuation one week, six weeks, four months, and eight months postpartum. Breastfeeding continuation was defined as exclusive breastfeeding or both breastfeeding and formula. The assessment eight months postpartum was used as a proxy for the WHO recommendation to continue breastfeeding for at least six months.

FINDINGS

Two trajectories (classes) of EPDS scores were determined using growth mixture modeling: 1) low stable (N = 631, 90.4%), and 2) increasing (N = 67, 9.6%). Cox regression analysis showed that the trait mindfulness facet non-reacting was significantly and inversely associated with the risk of breastfeeding discontinuation (HR = 0.96, 95% CI [0.94, 0.99], p = .002), while no significant association was found for belonging to the increasing EPDS class versus belonging to the low stable class (p = .735), adjusted for confounders.

KEY CONCLUSIONS

This study is the first to show that higher trait mindfulness non-reacting scores, but not persistently low levels of postpartum depressive symptoms, increase the likelihood of breastfeeding continuation.

IMPLICATIONS FOR PRACTICE

Improving non-reacting in perinatal women by meditation practice as part of a mindfulness-based intervention may lead to better breastfeeding continuation outcomes. Several mindfulness-based programs may be suitable.

Association between being breastfed and cardiovascular disease: a population cohort study of 320 249 participants

BACKGROUND

Being breastfed is associated with lower cardiovascular risk factors but, to date, no studies have demonstrated a protective effect on cardiovascular disease (CVD). This study aims to address the limitations of previous studies, specifically insufficient statistical power and residual confounding, to determine if such association exists.

METHODS

This is a population-based retrospective cohort study of 320 249 men and women aged 40-69 years. Breastfeeding status was self-reported. CVD and myocardial infarction (MI) events and deaths based via linkage to hospitalization and death records.

RESULTS

Overall, 28 469 (8.4%) participants experienced a CVD event and 5174 (1.6%) experienced an MI. Following adjustment for sociodemographic, lifestyle and early life confounders, breastfeeding was associated with a reduced risk of CVD events (HR 0.97, 95% CI 0.94-1.00, P = 0.041), CVD deaths (HR 0.91, 95% CI 0.84-0.98, P = 0.017), MI events (HR 0.93, 95% CI 0.87-0.99, P = 0.033) and MI deaths (HR 0.81, 95% CI 0.67-0.98, P = 0.026).

CONCLUSIONS

Child health benefits of breastfeeding are well established. However, the benefits of breastfeeding may extend into later life reinforcing the need to encourage and support breastfeeding.

Potential Epigenetic Effects of Human Milk on Infants' Neurodevelopment

The advantages of human milk feeding, especially in preterm babies, are well recognized. Infants' feeding with breast milk lowers the likelihood of developing a diverse range of non-communicable diseases later in life and it is also associated with improved neurodevelopmental outcomes. Although the precise mechanisms through which human milk feeding is linked with infants' neurodevelopment are still unknown, potential epigenetic effects of breast milk through its bioactive components, including non-coding RNAs, stem cells and microbiome, could at least partly explain this association. Micro- and long-non-coding RNAs, enclosed in milk exosomes, as well as breast milk stem cells, survive digestion, reach the circulation and can cross the blood-brain barrier. Certain non-coding RNAs potentially regulate genes implicated in brain development and function, whereas nestin-positive stem cells can possibly differentiate into neural cells or/and act as epigenetic regulators in the brain. Furthermore, breast milk microbiota contributes to the establishment of infant's gut microbiome, which is implicated in brain development via epigenetic modifications and key molecules' regulation. This narrative review provides an updated analysis of the relationship between breast milk feeding and infants' neurodevelopment via epigenetics, pointing out how breast milk's bioactive components could have an impact on the neurodevelopment of both full-term and preterm babies.

Evaluation of 2-year outcomes in infants born to mothers with and without NAFLD in pregnancy

Nonalcoholic fatty liver disease (NAFLD) affects an estimated 17% of pregnant patients in the USA. However, there are limited data on the impact of maternal NAFLD on pediatric outcomes. We prospectively evaluated outcomes in infants born to mothers with and without NAFLD in pregnancy over their first 2 years of life. Maternal subjects were identified through an ongoing prospective study in which pregnant individuals were screened for NAFLD. Pediatric outcomes of infants born to these mothers-including adverse neonatal outcomes and weight and weight-for-length percentile at 6, 12, 18, and 24 months-were prospectively evaluated. Multivariate logistic regression was performed to evaluate the association of maternal NAFLD with pediatric outcomes, as well as to adjust for potentially confounding maternal characteristics. Six hundred thirty-eight infants were included in our cohort. The primary outcomes assessed were weight and growth throughout the first 2 years of life. Maternal NAFLD was also not associated with increased infant birth weight or weight-for-gestational-age percentile or weight or weight-for-length percentile over the first 2 years of life. Maternal NAFLD was significantly associated with very premature delivery before 32 weeks, even after adjustment for confounding maternal characteristics (aOR = 2.83, p = 0.05). Maternal NAFLD was also significantly associated with neonatal jaundice, including after adjusting for maternal race (aOR = 1.67, p = 0.03). However, maternal NAFLD was not significantly associated with any other adverse neonatal outcomes.    Conclusion: Maternal NAFLD may be independently associated with very premature birth and neonatal jaundice but was not associated with other adverse neonatal outcomes. Maternal NAFLD was also not associated with any differences in infant growth over the first 2 years of life. What is Known: • Maternal NAFLD in pregnancy may be associated with adverse pregnancy and neonatal outcomes, but the findings are inconsistent across the literature. What is New: • Maternal NAFLD is not associated with any differences in weight at birth or growth over the first 2 years of life. • Maternal NAFLD is associated with very premature delivery and neonatal jaundice, but is not associated with other adverse neonatal outcomes.

Precocious evaluation of cardiovascular risk and its correlation with perinatal condition

The cardiovascular disease is the main cause of worldwide death. This profile is potentialized by the increased severity of infections in people with obesity, type 2 diabetes and hypertension. Children and adolescents are target groups for the prevention of non-communicable diseases. The Developmental Origins of Health and Disease concept points that perinatal conditions are an important risk factor to development of non-communicable disease in adulthood. In this context, the present review identifies perinatal factor that induces precocious cardiovascular risk factors, related with cardiometabolic syndrome. The low or high birth weight and caesarean delivery are risk factors that induce increased occurrence of cardiovascular risk biomarkers in children and adolescents, while the breast feeding or feeding with breast milk from the birth until two years-old is a protector strategy. Evaluation of perinatal conditions associated with precocious identification of cardiovascular risk factors in children and adolescents is an efficient strategy to prevent and control cardiovascular mortality; through interventions, as lifestyle changes during vulnerable windows of development, able to set up the risk to cardiometabolic disease.

Breastfeeding at Any Cost? Adverse Effects of Breastfeeding Pain on Mother-Infant Behavior

Breast milk is considered the ideal infant nutrition, and medical organizations encourage breastfeeding worldwide. Moreover, breastfeeding is often perceived as a natural and spontaneous socio-biological process and one of the fundamental roles of new mothers. While breastfeeding is beneficial, little scientific consideration has been given to its potential psychological challenges. Here, we investigate the phenomenon of breastfeeding pain in mothers and its association with maternal and infant behavioral regulation. During the postpartum weeks, the mother-infant dyad can be considered one allostatic unit directed at infant regulation and development. We hypothesize that pain comprises an allostatic challenge for mothers and will thus impair the capacity for dyadic regulation. To test this, we recruited 71 mothers with varying levels of breastfeeding pain and videotaped them with their infants (2-35 weeks old) during spontaneous face-to-face interactions. We quantified the individual differences in dyadic regulation by behaviorally coding the second-by-second affective expressions for each mother and infant throughout their interactions. We tested the extent to which breastfeeding pain alters affect regulation during mother-infant interactions. We discovered that mothers with severe breastfeeding pain express less affective expressions and less infant-directed gaze during interactive moments of engagement and play than mothers with no or moderate pain. Moreover, infants of mothers experiencing pain during breastfeeding express less affective expressions and more mother-directed gaze while interacting with their mothers than infants of mothers who are not in pain. This demonstrates that the allostatic challenge of maternal pain interferes with the behavioral regulation of both mothers and infants. Since the mother-infant dyad is a codependent allostatic unit, the allostatic challenges of one partner can impact the dyad and thus potentially impact child development, bonding, and mother and infant well-being. The challenges of breastfeeding should be considered in addition to the nutritional advances.

Safety and Suitability of an Infant Formula Manufactured from Extensively Hydrolysed Protein in Healthy Term Infants

We aimed to demonstrate that healthy term infants experience noninferior growth with infant formula manufactured from extensively hydrolysed whey protein (eHF) compared to intact cow's milk protein (control formula, CF). This prospective, randomised, double-blind, parallel-group, controlled, multicentre trial included healthy term infants who were exclusively formula-fed. Infants ≤ 25 days of age received eHF or CF for at least three months up to 120 days of age, with a follow-up until 180 days of age. A reference group included exclusively breastfed infants (BF). Of 318 infants randomised, 297 (148 CF, 149 eHF) completed the study per protocol. Weight gain up to 120 days of age was noninferior (margin -3.0 g/day) in eHF (28.95 (95% CI: 27.21; 30.68) g/day) compared to CF (28.85 (95% CI: 27.10; 30.61) g/day) with a difference in means of 0.09 g/day and a lower limit of the one-sided 97.5% CI of -0.86 g/day (p < 0.0001 for noninferiority testing). Weight gain remained comparable during follow-up. Further anthropometric parameters did not differ between the infant formula groups throughout the study. Growth was comparable in BF. No relevant safety issues were observed. To conclude, eHF meets infant requirements for adequate growth during the first six months of life and can be considered safe and suitable.

Evidence for human milk as a biological system and recommendations for study design-a report from "Breastmilk Ecology: Genesis of Infant Nutrition (BEGIN)" Working Group 4

Human milk contains all of the essential nutrients required by the infant within a complex matrix that enhances the bioavailability of many of those nutrients. In addition, human milk is a source of bioactive components, living cells and microbes that facilitate the transition to life outside the womb. Our ability to fully appreciate the importance of this matrix relies on the recognition of short- and long-term health benefits and, as highlighted in previous sections of this supplement, its ecology (i.e., interactions among the lactating parent and breastfed infant as well as within the context of the human milk matrix itself). Designing and interpreting studies to address this complexity depends on the availability of new tools and technologies that account for such complexity. Past efforts have often compared human milk to infant formula, which has provided some insight into the bioactivity of human milk, as a whole, or of individual milk components supplemented with formula. However, this experimental approach cannot capture the contributions of the individual components to the human milk ecology, the interaction between these components within the human milk matrix, or the significance of the matrix itself to enhance human milk bioactivity on outcomes of interest. This paper presents approaches to explore human milk as a biological system and the functional implications of that system and its components. Specifically, we discuss study design and data collection considerations and how emerging analytical technologies, bioinformatics, and systems biology approaches could be applied to advance our understanding of this critical aspect of human biology.

Abnormal glucose tolerance in women with prior gestational diabetes mellitus: a 4-year follow-up study

BACKGROUND

Adoption of the International Association of Diabetes and Pregnancy Study Group (IADPSG) criteria for diagnosis of gestational diabetes mellitus (GDM) varies worldwide. Early detection of women at increased risk of developing type 2 diabetes mellitus (T2DM) following GDM enables initiation of measures to delay disease onset.

OBJECTIVES

To determine the 4-year cumulative incidence and risk factors for developing abnormal glucose tolerance (AGT) among women with previous GDM using modified IADPSG criteria. Additionally, to review post-natal attendance at diabetes screening and the impact of post-partum lifestyle modifications and breastfeeding on the risk of T2DM development.

METHODS

Four hundred twenty-six women with a prior history of GDM were invited to participate in the study, 4 years after the index pregnancy. The following were completed: body measurements, oral glucose tolerance test (OGTT), glycated haemoglobin (HbA1c), vitamin D, and other biochemistry measurements. Participants also completed a lifestyle questionnaire.

RESULTS

Of the 74 women who participated, 15 (20%) had AGT. Predictive factors for AGT development were as follows: fasting glucose levels (p = 0.004), HbA1c (p = 0.008) at GDM diagnosis, and early pregnancy BMI (p = 0.001). Thirty-three (45%) women had not attended their postnatal screening. The odds ratio of the association between breastfeeding and AGT development was 0.16 (95% CI: 0.05 to 0.53).

CONCLUSION

The proportion of women who develop AGT after a diagnosis of GDM remains high. The factors associated with progression to AGT are available at GDM diagnosis. Preventing AGT in this group is possible by supporting breastfeeding. Attendance at post-natal screening should also be encouraged.

No such thing as a free lunch: The direct marginal costs of breastfeeding

Understanding costs associated with breastfeeding is critical to developing maximally effective policy to support breastfeeding by addressing financial barriers. Breastfeeding is not without cost; direct costs include those of equipment, modified nutritional intake, and time (opportunity cost). Breastfeeding need not require more equipment than formula feeding, though maternal equipment use varies by maternal preference. Meeting increased nutritional demands requires increased spending on food and potentially dietary supplementation, the marginal cost of which depends on a mother's baseline diet. The opportunity cost of the three to four hours per day breastfeeding demands may be prohibitively high, particularly to low-income workers. These costs are relatively highest for low-income individuals, a group disproportionately comprising racial and ethnic minorities, and who demonstrate lower rates of breastfeeding than their white and higher-income peers. Acknowledging and addressing these costs and their regressive nature represents a critical component of effective breastfeeding policy and promotion.

Prediction model for milk transfer of drugs by primarily evaluating the area under the curve using QSAR/QSPR

PURPOSE

Information on milk transferability of drugs is important for patients who wish to breastfeed. The purpose of this study is to develop a prediction model for milk-to-plasma drug concentration ratio based on area under the curve (M/P_AUC). The quantitative structure-activity/property relationship (QSAR/QSPR) approach was used to predict compounds involved in active transport during milk transfer.

METHODS

We collected M/P ratio data from literature, which were curated and divided into M/P_AUC ≥ 1 and M/P_AUC < 1. Using the ADMET Predictor® and ADMET Modeler™, we constructed two types of binary classification models: an artificial neural network (ANN) and a support vector machine (SVM).

RESULTS

M/P ratios of 403 compounds were collected, M/P_AUC data were obtained for 173 compounds, while 230 compounds only had M/P_non-AUC values reported. The models were constructed using 129 of the 173 compounds, excluding colostrum data. The sensitivity of the ANN model was 0.969 for the training set and 0.833 for the test set, while the sensitivity of the SVM model was 0.971 for the training set and 0.667 for the test set. The contribution of the charge-based descriptor was high in both models.

CONCLUSIONS

We built a M/P_AUC prediction model using QSAR/QSPR. These predictive models can play an auxiliary role in evaluating the milk transferability of drugs.

Breastfeeding in infancy and mortality in middle and late adulthood: A prospective cohort study and meta-analysis

BACKGROUND

Breastfeeding in infancy is associated with a lower risk of mortality among children, but the impact on mortality in middle and late adulthood remains unknown.

OBJECTIVES

To assess the association between breastfeeding in infancy and mortality in middle and late adulthood.

METHODS

We included 383,627 participants aged 40-73 from the UK Biobank (2006-2010) and followed up until 2021. Hazard ratios (HRs) and 95% confidence intervals (CIs) for all-cause and cause-specific mortality according to breastfeeding in infancy were estimated with Cox proportional hazards regression models. We further did a meta-analysis, including results from our present study and three other cohort studies (PROSPERO; number CRD42022348925).

RESULTS

During a total of 4732,751 person-years of follow-up, 25,581 deaths were identified. Breastfeeding in infancy was associated with lower risks of mortality in middle and late adulthood, with adjusted HRs (95% CIs) of 0.95 (0.93-0.98) for all-cause mortality; 0.91 (0.87-0.96) for cardiovascular mortality and 0.94 (0.874-0.999) for respiratory mortality. Specifically, the association with mortality seemed to attenuate with age - stronger in middle-aged adults than in older adults. A similar association between breastfeeding in infancy and all-cause mortality was found in the meta-analysis.

CONCLUSION

Breastfeeding in infancy is associated with a lower risk of mortality - even decades later - in middle and late adulthood.

Systematic review and meta-analysis of breastfeeding and later overweight or obesity expands on previous study for World Health Organization

AIM

To update a systematic review and meta-analysis of the association of breastfeeding with overweight or obesity that had been commissioned by the World Health Organization. We also assessed the likelihood of residual confounding.

METHODS

Two independent reviewers searched MEDLINE, LILACS and Web of Science for manuscripts published between August 2014 and May 2021. Studies that only evaluated infants were excluded. Random-effects models were used to pool the estimates.

RESULTS

The review comprised 159 studies with 169 estimates on the association of breastfeeding with overweight or obesity, and most of the studies were carried out among individuals aged 1-9 years (n = 130). Breastfeeding protected against overweight or obesity (pooled odds ratio:0.73, 95% confidence interval:0.71; 0.76). And, even among the 19 studies that were less susceptible to publication bias, residual confounding and misclassification, a benefit was observed (pooled odds ratio:0.85, 95% confidence interval:0.77; 0.93). Among those studies that were clearly susceptible to positive confounding by socioeconomic status, a benefit of breastfeeding was observed even after adjusting for socioeconomic status (pooled odds ratio:0.76, 95% confidence interval: 0.69; 0.83).

CONCLUSION

Breastfeeding reduced the odds of overweight or obesity, and this association was unlikely to be due to publication bias and residual confounding.

Perinatal Hospital Practices Are Associated with Breastfeeding through 5 Months Postpartum among Women and Infants from Low-Income Households

BACKGROUND

Breastfeeding (BF) provides optimal nutrition during the first 6 mo of life and is associated with reduced infant mortality and several health benefits for children and mothers. However, not all infants in the United States are breastfed, and sociodemographic disparities exist in BF rates. Experiencing more BF-friendly maternity care practices at the hospital is associated with better BF outcomes, but limited research has examined this association among mothers enrolled in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), a population at risk of low BF rates.

OBJECTIVES

We assessed the association between BF-related hospital practices (rooming-in, support from hospital staff, and provision of a pro-formula gift pack) and the odds of any or exclusive BF through 5 mo among infants and mothers enrolled in WIC.

METHODS

We analyzed data from the WIC Infant and Toddler Feeding Practices Study II, a nationally representative cohort of children and caregivers enrolled in WIC. Exposures included maternal experience of hospital practices reported at 1 mo postpartum, and BF outcomes were surveyed at 1, 3, and 5 mo. ORs and 95% CIs were obtained using survey-weighted logistic regression, adjusting for covariates.

RESULTS

Rooming-in and strong hospital staff support were associated with higher odds of any BF at 1, 3, and 5 mo postpartum. Provision of a pro-formula gift pack was negatively associated with any BF at all time points and with exclusive BF at 1 mo. Each additional BF-friendly hospital practice experienced was associated with 47% to 85% higher odds of any BF over the first 5 mo and 31% to 36% higher odds of exclusive BF over the first 3 mo.

CONCLUSIONS

Exposure to BF-friendly hospital practices was associated with BF beyond the hospital stay. Expanding BF-friendly policies at the hospital could increase BF rates in the United States WIC-served population.

Assessment of Overweight, Obesity, Central Obesity, and Type 2 Diabetes among Adolescents in Qatar: A Cross-Sectional Study

Qatar has a high obesity and type 2 diabetes mellitus (T2DM) burden. This study aimed to (1) determine the prevalence of overweight, obesity, and T2DM in 13-17-year-old adolescents and (2) evaluate associations with adolescents' lifestyle and breastfeeding history, parental weight, and familial T2DM history. A cross-sectional study (double-stage cluster sampling) was conducted in 2018-2020 using a self-administered parental and adolescent questionnaire. In the results, 23.4% of the adolescents (107/459) were overweight; 19.9% (91/459) were obese; and 37.6% (171/459) had evidence of central obesity. Random blood sugar (RBS) was suggestive of prediabetes (≥140 mg/dL) for 23 (5.0%) adolescents and T2DM (≥200 mg/dL) for none. In multivariable analysis, obesity was significantly associated with no breastfeeding (OR = 3.17, 95% CI: 1.09-9.26) compared to breastfed adolescents for ≥6 months, with first-degree family history of T2DM (OR = 2.27; 95% CI: 1.22-4.27), with maternal obesity (OR = 2.40; 95% CI: 1.01-5.70), and with acanthosis nigricans in adolescents (OR = 19.8; 95% CI: 8.38-46.9). Central obesity was significantly associated with maternal obesity (OR = 2.21; 95% CI: 1.14-4.27) and with acanthosis nigricans (OR = 3.67; 95% CI: 1.88-7.18). Acanthosis nigricans (OR = 4.06; 95% CI: 1.41-11.7) was the only factor associated with elevated RBS. Addressing future disease burden among adults in Qatar will require extensive health and well-being programs, focused on healthy lifestyles and behaviors such as nutritious diets, physical activity, stress management, and self-care.

Cultural influences on infant and toddler feeding among low-income Latinx mothers

Latinx infants and toddlers experience higher obesity rates than their black or white counterparts, increasing chronic disease risk later in life. Infant and toddler feeding (ITF) interventions are shown to improve dietary behaviours, but few studies target Latinx populations. Culturally tailoring such interventions is imperative, but cultural influences on Latinx ITF practices remain unclear. The purpose of this study was to characterize how culture influences ITF practices among Latinx mothers of low income. A brief survey and semistructured interview informed by the theory of planned behaviour (TPB) were conducted on Zoom with New York City-based Latinx mothers of children 4 to 24 months old. A directed content analysis approach was used to identify themes using TPB theoretical codes and inductive codes. Transcripts were coded independently by two researchers using NVivo 12. Survey data were analyzed using descriptive statistics in Excel. Participants (n = 19) were of Dominican, Mexican and Central and South American origin, had low acculturation scores and mean child age was 16.7 months (range: 5-24 months old). The central theme identified was that participants balanced cultural information with evidence-based health information to determine which ITF practices were most beneficial to infant/toddler health. This resulted in the adoption of evidence-based ITF recommendations, adoption of cultural practices that aligned with evidence-based recommendations and dismissal or postponement of cultural ITF practices that contradicted evidence-based recommendations. The present results can be applied to culturally relevant ITF education as follows: emphasizing the benefits of desirable ITF practices on children's health and promoting healthy cultural ITF practices.

How much does it cost to implement the Baby-Friendly Hospital Initiative training step in the United States and Mexico?

The Baby-Friendly Hospital Initiative (BFHI) has been shown to increase breastfeeding rates, improving maternal and child health and driving down healthcare costs via the benefits of breastfeeding. Despite its clear public health and economic benefits, one key challenge of implementing the BFHI is procuring funding to sustain the program. To address this need and help healthcare stakeholders advocate for funds, we developed a structured method to estimate the first-year cost of implementing BFHI staff training, using the United States (US) and Mexico as case studies. The method used a hospital system-wide costing approach, rather than costing an individual hospital, to estimate the average per birth BFHI staff training costs in US and Mexican hospitals with greater than 500 annual births. It was designed to utilize publicly available data. Therefore, we used the 2014 American Hospital Association dataset (n = 1401 hospitals) and the 2018 Mexican Social Security Institute dataset (n = 154 hospitals). Based on our review of the literature, we identified three key training costs and modelled scenarios via an econometric approach to assess the sensitivity of the estimates based on hospital size, level of obstetric care, and training duration and intensity. Our results indicated that BFHI staff training costs ranged from USD 7.27–125.39 per birth in the US and from PPP 2.68–6.14 per birth in Mexico, depending on hospital size and technological capacity. Estimates differed between countries because the US had more hospital staff per birth and higher staff salaries than Mexico. Future studies should examine whether similar, publicly available data exists in other countries to test if our method can be replicated or adapted for use in additional settings. Healthcare stakeholders can better advocate for the funding to implement the entire BFHI program if they are able to generate informed cost estimates for training as we did here.

Muslim women's attitudes toward infant feeding in Qatar: An exploration using the Iowa infant feeding attitude scale

BACKGROUND

Maternal attitude toward infant feeding is an important determinant of breastfeeding. The Islamic faith encourages breastfeeding, yet many Muslim women do not breastfeed as per the World Health Organization recommendations. In the Middle East, research has not addressed attitudes toward infant feeding among Muslim women. Assessing women's attitudes toward infant feeding choices is crucial to improve breastfeeding rates among Muslim women.

AIM

The aims of this study are to (a) examine postpartum Muslim women's attitudes toward infant feeding, (b) identify the determinants of these attitudes, and (c) determine whether attitudes can predict breastfeeding intention among Muslim women. A secondary aim is to examine the psychometric attributes of the Iowa Infant Feeding Attitude Scale among Muslim women.

METHOD

A convenience sample of postpartum Muslim women (N = 414) were recruited between November 2019 and January 2020 in a large maternity facility in Qatar. A pre-developed questionnaire and the IIFAS were used to collect data. Both Arabic (n = 228) and English (n = 186) versions of the IIFAS were distributed postnatally to measure Muslim women's attitudes towards breastfeeding. A total attitude score was computed with higher scores indicating a more positive attitude toward breastfeeding.

FINDINGS

The mean age of participants was 30.3 ± 5.2 years; 65.2% had a university degree and only 20.5% were employed. The mean attitude score was 61.8 ± 7.8. A significant association was found between the IIFAS attitude score and ethnicity, favouring Non-Qatari Arab women who had significantly higher attitude scores (p < .001). Women with full-time or part-time work had significantly higher scores than those not working (p = .008, p = .023). Older women had significantly lower attitude scores (adjusted slope = -0.230, p = .008). Cronbach's alpha reliability coefficient of the Arabic and English versions of the IIFAS ranged from 0.69 to 0.80.

CONCLUSION

Ethnicity, employment status, and age are determinants of infant feeding attitudes among Muslim women. In Qatar, Muslim women's attitudes related to breastfeeding trend toward positive; however, attitude is not a predictor of antenatal breastfeeding intention. Further research employing a larger sample with a focus on a culturally sensitive approach is recommended. The IIFAS has a moderate reliability level and needs to be culturally adapted to be used among a Muslim population.

Profiling of triacylglycerol composition in the breast milk of Chinese mothers at different lactation stages

Triacylglycerol (TAG) is the primary constituent of human milk fat and plays a vital role in the healthy development of infants. But few studies reported the sophisticated profile of TAG molecular species in human breast milk and its temporal changes during a prolonged lactation period. An efficient ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) method was adopted to examine TAGs. A total of 128 TAGs in 296 human breast milk samples collected during postnatal 0 to 400 days were identified. The changes in the human milk TAG profile mainly took place in the early stages of lactation (postnatal 0-45 days), and the TAG profile became stable in mature milk after 200 days of lactation. Odd chain fatty acids (OC-FAs) may be important markers for identifying human breast milk of different lactation stages. This study could provide evidence for developing safe and efficacious human-milk substitutes for children without access to human breast milk.

Technical Report: Breastfeeding and the Use of Human Milk

Breastfeeding and human milk are the normative standards for infant feeding and nutrition. The short- and long-term medical and neurodevelopmental advantages of breastfeeding make breastfeeding or the provision of human milk a public health imperative. The American Academy of Pediatrics (AAP) recommends exclusive breastfeeding for approximately 6 months after birth. Furthermore, the AAP supports continued breastfeeding, along with appropriate complementary foods introduced at about 6 months, as long as mutually desired by mother and child for 2 years or beyond. These recommendations are consistent with those of the World Health Organization (WHO). Medical contraindications to breastfeeding are rare. The AAP recommends that birth hospitals or centers implement maternity care practices shown to improve breastfeeding initiation, duration, and exclusivity. The Centers for Disease Control and Prevention and The Joint Commission monitor breastfeeding practices in United States hospitals. Pediatricians play a critical role in hospitals, their practices, and communities as advocates of breastfeeding and, thus, need to be trained about the benefits of breastfeeding for mothers and children and in managing breastfeeding. Efforts to improve breastfeeding rates must acknowledge existing disparities and the impact of racism in promoting equity in breastfeeding education, support, and services.

Policy Statement: Breastfeeding and the Use of Human Milk

Breastfeeding and human milk are the normative standards for infant feeding and nutrition. The short- and long-term medical and neurodevelopmental advantages of breastfeeding make breastfeeding, or the provision of human milk, a public health imperative. The American Academy of Pediatrics (AAP) recommends exclusive breastfeeding for approximately 6 months after birth. Furthermore, the AAP supports continued breastfeeding, along with appropriate complementary foods introduced at about 6 months, as long as mutually desired by mother and child for 2 years or beyond. These recommendations are consistent with those of the World Health Organization (WHO). Medical contraindications to breastfeeding are rare. The AAP recommends that birth hospitals or centers implement maternity care practices shown to improve breastfeeding initiation, duration, and exclusivity. The Centers for Disease Control and Prevention (CDC) and The Joint Commission monitor breastfeeding practices in US hospitals. Pediatricians play a critical role in hospitals, their practices, and communities as advocates of breastfeeding and, thus, need to be trained about the benefits of breastfeeding for mothers and children and in managing breastfeeding.

Breastfeeding practices for infants with inherited metabolic disorders: A survey of registered dietitians in the United States and Canada

Background

Objective

Design

Results

Conclusions

Perceived cardiovascular disease risk and tailored communication strategies among rural and urban community dwellers in Rwanda: a qualitative study

Background

In Rwanda, cardiovascular diseases (CVDs) are the third leading cause of death, and hence constitute an important public health issue. Worldwide, most CVDs are due to lifestyle and preventable risk factors. Prevention interventions are based on risk factors for CVD risk, yet the outcome of such interventions might be limited by the lack of awareness or misconception of CVD risk. This study aimed to explore how rural and urban population groups in Rwanda perceive CVD risk and tailor communication strategies for estimated total cardiovascular risk.

Methods

An exploratory qualitative study design was applied using focus group discussions to collect data from rural and urban community dwellers. In total, 65 community members took part in this study. Thematic analysis with Atlas ti 7.5.18 was used and the main findings for each theme were reported as a narrative summary.

Results

Participants thought that CVD risk is due to either financial stress, psychosocial stress, substance abuse, noise pollution, unhealthy diets, diabetes or overworking. Participants did not understand CVD risk presented in a quantitative format, but preferred qualitative formats or colours to represent low, moderate and high CVD risk through in-person communication. Participants preferred to be screened for CVD risk by community health workers using mobile health technology.

Conclusion

Rural and urban community members in Rwanda are aware of what could potentially put them at CVD risk in their respective local communities. Community health workers are preferred by local communities for CVD risk screening. Quantitative formats to present the total CVD risk appear inappropriate to the Rwandan population and qualitative formats are therefore advisable. Thus, operational research on the use of qualitative formats to communicate CVD risk is recommended to improve decision-making on CVD risk communication in the context of Rwanda.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-022-13330-6.

Ethical Considerations for Hospital-Based Infant Feeding Support

I applied a systematic ethical decision-making approach to evaluate how health care professionals in hospital settings should provide infant feeding support after childbirth. Human milk is recommended as the optimal source of nutrition for infants because of the health benefits it provides for infants and their lactating parents. However, health consequences of insufficient oral intake in infants and psychological distress in the lactating parent may occur when infant feeding does not go according to plan. Infant feeding support should be provided in a way that is objective, sensitive, individualized, equitable, and supportive of autonomy and avoids harm. I provide recommendations for ethical infant feeding support that can be applied by individual health care professionals and on postpartum units in hospitals.