Are starting and continuing breastfeeding related to educational background? The generation R study

Associations between pressure to breastfeed and depressive, anxiety, obsessive-compulsive, and eating disorder symptoms among postpartum women

BACKGROUND

Data from qualitative interviews indicate postpartum individuals feel pressure from their healthcare providers, the media, and their partners to breastfeed their infant(s). However, the link between pressure to breastfeed and maternal mental health symptoms has not been evaluated quantitatively. The goal of the current study was to evaluate the associations between perceived pressure to breastfeed from various sources and depressive, anxiety, obsessive-compulsive, and eating disorder symptoms among postpartum individuals.

METHODS

Participants were 306 women, ages 18-39, who gave birth in the past 12 months in the United States (primarily in North Carolina). They completed an online survey about their health history (including mental health symptoms) and breastfeeding experiences.

RESULTS

Results found postpartum women perceived more pressure to breastfeed from healthcare providers and from the media compared to pressure to breastfeed from their partners. Pressure from healthcare providers was associated with depressive, obsessive-compulsive, and eating disorder symptoms, but not with anxiety symptoms. Pressure from the media was associated with only depressive and eating disorder symptoms. Pressure from partners was not significantly associated with mental health symptoms. Above and beyond the other sources of pressure, pressure from healthcare providers explained a unique proportion of variance of obsessive-compulsive and eating disorder symptoms.

LIMITATIONS

Limitations include the cross-sectional design (which limits causal interpretations), and the homogenous sample (87% identified as White).

CONCLUSIONS

Messaging and information about breastfeeding (particularly from healthcare providers) should be reviewed to determine if there is language which could be perceived as "pressure." It is important to screen for a variety of mental health symptoms, including eating disorders, in perinatal populations when discussing breastfeeding.

Shift-work and breastfeeding for women returning to work in a manufacturing workplace in Taiwan

Background

Although breastfeeding-friendly workplaces are provided to promote an employed mother’s breastfeeding intention, few studies have explored breastfeeding intentions and behavior after a mother returns to work on a shift work or non-shift work schedule. To explore the impact of breastfeeding-friendly support on the intention of working mothers with different work schedules to continue breastfeeding, we conducted a survey at a female labor-intensive electronics manufacturer in Taiwan from August 2011 to April 2012.

Methods

Female workers who met the inclusion criteria (maternity leave between January 2009 and January 2011) were invited to participate in the survey. A structured questionnaire survey was administered to 715 working mothers employed at an electronics manufacturing plant in Tainan Science Park in Southern Taiwan. The questionnaire content included female employee demographic characteristics, employment characteristics, continued breastfeeding behavior after returning to work, access to lactation rooms, and employee perception of the breastfeeding policy and support when raising their most recently born child.

Results

A total of 715 employed mothers’ data were collected. Of the shift workers, 90.1% breastfed during maternity leave, but the breastfeeding rates after returning to work decreased to 21.5% for one to six months and 17.9% for more than six months. Of the non-shift workers, 87.6% breastfed during maternity leave and the breastfeeding rates after returning to work were 24.1% for one to six months and 34.6% for more than six months. Using a lactation room and taking advantage of breast-pumping breaks were significant factors for continuing to breastfeed one to six months after returning to work and more than six months after returning to work among shift workers and non-shift workers. In addition, among non-shift workers, a higher education level of the mother (odds ratio (OR) = 9.57) and partner support (OR = 4.89) had positive effects toward a mother continuing breastfeeding for more than six months after returning to work.

Conclusions

Workplaces or employers should provide more support to encourage employed mothers to take advantage of the breastfeeding room and breast-pumping breaks, enhance the frequency of the usage of lactation rooms, and increase the rate of continued breastfeeding.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13006-022-00467-8.

Effects of maternal education on early initiation and exclusive breastfeeding practices in sub-Saharan Africa: a secondary analysis of Demographic and Health Surveys from 2015 to 2019

BACKGROUND

Early initiation of breast feeding (EIBF) and exclusive breast feeding (EBF) are the cheapest, feasible and simplest nutritional interventions for infants. Effects of maternal education on EIBF and EBF are not consistent across studies. This study assessed the effects of maternal education on EIBF and EBF.

METHODS

A cross-sectional study was done based on data collected for phase 7 Demographic and Health Surveys conducted in 16 sub-Saharan African countries from 2015 to 2019. Data of the last-born children younger than 6 (n=19 103) and 24 (n=75 293) months were analysed to assess associations between maternal education and EIBF and EBF practices, respectively. To assess the associations, X² test and logistic regression were done. Adjusted ORs (AORs) and their 95% CIs were used to declare statistical significance of the associations.

RESULTS

After controlling for all other potentially confounding variables, mothers who completed primary school were 1.29 (95% CI AOR: 1.24 to 1.34) times more likely to initiate breast feeding within the first 1 hour of delivery compared with mothers without education. However, mothers with secondary (AOR: 1.01; 95% CI: 0.96 to 1.06) or higher (AOR: 0.96; 95% CI: 0.87 to 1.05) level of education were not significantly different from mothers without education concerning EIBF. Similarly, mothers educated to primary school were 1.37 (95% CI AOR: 1.27 to 1.48) times more likely to exclusively breast feed compared with mothers without education. However, mothers educated to secondary (AOR: 1.07; 95% CI: 0.98 to 1.17) or higher (AOR: 1.07; 95% CI: 0.89 to 1.27) level of education were not significantly different from uneducated mothers regarding EBF practices.

CONCLUSIONS

Effects of maternal education on EIBF and EBF depend on the level of educational attainment. Future studies should look for reasons for the lower rate of EIBF and EBF among mothers with higher educational status.

A cross-sectional study of lactation room quality and Dutch working mothers' satisfaction, perceived ease of, and perceived support for breast milk expression at work

Background

The challenge of combining professional work and breastfeeding is a key reason why women choose not to breastfeed or to stop breastfeeding early. We posited that having access to a high-quality lactation room at the workplace could influence working mothers’ satisfaction and perceptions related to expressing breast milk at work, which could have important longer term consequences for the duration of breastfeeding. Specifically, we aimed to (1) develop a checklist for assessing the quality of lactation rooms and (2) explore how lactation room quality affects lactating mothers’ satisfaction and perceptions. Drawing on social ecological insights, we hypothesized that the quality of lactation rooms (operationalized as any space used for expressing milk at work) would be positively related to mothers’ satisfaction with the room, perceived ease of, and perceived support for milk expression at work.

Methods

We conducted two studies. In Study 1 we developed a lactation room quality checklist (LRQC) and assessed its reliability twice, using samples of 33 lactation rooms (Study 1a) and 31 lactation rooms (Study 1b). Data were collected in the Northern part of the Netherlands (between December 2016 and April 2017). Study 2 comprised a cross-sectional survey of 511 lactating mothers, working in a variety of Dutch organizations. The mothers were recruited through the Facebook page of a popular Dutch breastfeeding website. They completed online questionnaires containing the LRQC and measures aimed at assessing their satisfaction and perceptions related to milk expression at work (in June and July 2017).

Results

The LRQC was deemed reliable and easy to apply in practice. As predicted, we found that objectively assessed higher-quality lactation rooms were associated with increased levels of satisfaction with the lactation rooms, perceived ease of milk expression at work, and perceived support from supervisors and co-workers for expressing milk in the workplace.

Conclusions

The availability of a high-quality lactation room could influence mothers’ decisions regarding breast milk expression at work and the commencement and/or continuation of breastfeeding. Future studies should explore whether and how lactation room quality affects breastfeeding choices, and which aspects are most important to include in lactation rooms.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13006-021-00415-y.

Breastfeeding and Overweight in European Preschoolers: The ToyBox Study

The benefits of breastfeeding (BF) include risk reduction of later overweight and obesity. We aimed to analyse the association between breastfeeding practices and overweight/obesity among preschool children participating in the ToyBox study. Data from children in the six countries, participating in the ToyBox-study (Belgium, Bulgaria, Germany, Greece, Poland, and Spain) 7554 children/families and their age is 3.5–5.5 years, 51.9% were boys collected cross-sectionally in 2012. The questionnaires included parents’ self-reported data on their weight, height, socio-demographic status, and infant feeding practices. Measurements of preschool children’s weight and height were done by trained researchers using standard protocols and equipment. The ever breastfeeding rate in the total sample was 85.0% (n = 5777). Only 6.3% (n = 428) of the children from the general sample were exclusively breastfed (EBF) for the duration of the first six months. EBF for four to six months was significantly (p < 0.001) less likely among mothers with formal education < 12 years (adjusted Odds Ratio (OR) = 0.61; 95% Confidence interval (CI) 0.44–0.85), smoking throughout pregnancy (adjusted OR = 0.39; 95% CI 0.24–0.62), overweight before pregnancy (adjusted OR = 0.67; 95%CI 0.47–0.95) and ≤25 years old. The median duration of any breastfeeding was five months. The prevalence of exclusive formula feeding during the first five months in the general sample was about 12% (n = 830). The prevalence of overweight and obesity at preschool age was 8.0% (n = 542) and 2.8% (n = 190), respectively. The study did not identify any significant association between breastfeeding practices and obesity in childhood when adjusted for relevant confounding factors (p > 0.05). It is likely that sociodemographic and lifestyle factors associated with breastfeeding practices may have an impact on childhood obesity. The identified lower than desirable rates and duration of breastfeeding practices should prompt enhanced efforts for effective promotion, protection, and support of breastfeeding across Europe, and in particular in regions with low BF rates.

Breast feeding and infant development in a cohort with sibling pair analysis: the Japan Environment and Children's Study

OBJECTIVES

To investigate the association between breast feeding and infant development during the first year of life using sibling comparison.

DESIGN

Nationwide prospective birth cohort study with sibling pair analysis.

SETTING

15 regional centres that participated in the Japan Environment and Children's Study.

PARTICIPANTS

This study included 77 119 children (singleton, term birth and no malformation/severe diseases) whose mothers were registered between January 2011 and March 2014, including 3521 duos or trios of siblings.

PRIMARY OUTCOME MEASURES

The primary outcome was developmental delay at 6 and 12 months of age, assessed using the Japanese translation of the Ages and Stages Questionnaires, third edition. Multivariable regression analyses adjusted for confounders were performed to estimate the risk ratios of delay associated with any or exclusive breast feeding. Pairs of siblings discordant for statuses were selected, and conditional regression analyses were conducted with a matched cohort design.

RESULTS

Developmental delay was identified in 6162 (8.4%) and 10 442 (14.6%) children at 6 and 12 months of age, respectively. Any breast feeding continued until 6 months or 12 months old was associated with reduced developmental delay at 12 months of age (adjusted risk ratio (95% CI): 0.81 (0.77 to 0.85) and 0.81 (0.78 to 0.84), respectively). Furthermore, exclusive breast feeding until 3 months was associated with reduced developmental delay at 12 months of age (adjusted risk ratio, 0.86 (95% CI 0.83 to 0.90)). In sibling pair analysis, the association between any breast feeding until 12 months and reduced developmental delay at 12 months of age persisted (adjusted risk ratio, 0.64 (95% CI 0.43 to 0.93)).

CONCLUSIONS

The present study demonstrated the association of continuous breast feeding with reduced developmental delay at 1 year of age using sibling pair analysis, in which unmeasured confounding factors are still present but less included. This may provide an argument to promote breastfeeding continuation.

Current lifestyle and exclusive breastfeeding: an impossible balance?

427 women were included in this observational cohort study to determine the rate of exclusive (EB), mixed (MB) and artificial breastfeeding (AB) and the personal reasons and social factors influencing this decision. An initial survey was conducted within the first 36 h postpartum and a second wave was carried out 3 months after delivery. 55.74% (238) of the patients intended to EB, 32.55% (139) AB and 11.71% (50) MB. After 3 months, a high percentage in group EB (75.23%) maintained EB. The main reason for switching to AB was the absence of milk or weight loss of the newborn. In conclusion, EB is the preferred form for feeding newborns. When these women returned to their workplace, most of them wanted to continue with EB. Women with higher academic degrees chose more often EB.IMPACT STATEMENTWhat is already known on this subject? The benefits of exclusive breastfeeding are well known. However, in modern western societies, it is not easy to combine breastfeeding with day-to-day activity. Work activity, age or previous parity are some of the factors that may influence the election of the type of lactation.What do the results of this study add? Exclusive breastfeeding is the preferred method for feeding newborns immediately postpartum and 3 months later. Work activity does not seem to influence or to switch the choice. However, the level of education could be a determinant of adherence to exclusive breastfeeding.What are the implications of these findings for clinical practice and/or further research? Assessing the factors that favour adherence to exclusive breastfeeding might be a useful tool to its promotion. This study warrants further multivariate analyses on the same topic and additional studies in other social contexts.

Complementary Feeding and Overweight in European Preschoolers: The ToyBox-Study

Complementary feeding (CF) should start between 4–6 months of age to ensure infants’ growth but is also linked to childhood obesity. This study aimed to investigate the association of the timing of CF, breastfeeding and overweight in preschool children. Infant-feeding practices were self-reported in 2012 via a validated questionnaire by >7500 parents from six European countries participating in the ToyBox-study. The proportion of children who received breast milk and CF at 4–6 months was 51.2%. There was a positive association between timing of solid food (SF) introduction and duration of breastfeeding, as well as socioeconomic status and a negative association with smoking throughout pregnancy (p < 0.005). No significant risk to become overweight was observed among preschoolers who were introduced to SF at 1–3 months of age compared to those introduced at 4–6 months regardless of the type of milk feeding. Similarly, no significant association was observed between the early introduction of SF and risk for overweight in preschoolers who were breastfed for ≥4 months or were formula-fed. The study did not identify any significant association between the timing of introducing SF and obesity in childhood. It is likely that other factors than timing of SF introduction may have impact on childhood obesity.

The effect of pre-pregnancy body mass index on breastfeeding initiation, intention and duration: A systematic review and dose-response meta-analysis

Overweight and obesity not only are major risk factors for number of chronic diseases, but also a risk factor for pregnancy complications in women. The present study aims to investigate the association between pre-pregnancy BMI and the persistence and duration of BF. The electronic databases including Medline (PubMed), Scopus, Embase, Web of Science and Google Scholar were searched for papers with titles and/or abstracts including one of our keywords and published up to 15 April 2019. For dose-response relationship, the two-stage random-effects meta-analysis was performed using the “dosresmeta” function in R software. Thirty-two studies with the effect of pre-pregnancy BMI on BF initiation, intention and duration were included in the present study. Based on crude and adjusted OR models, the risk of BF cessation increased by 4% (OR = 1.04; 95% CI: 1.02–1.05) with an increase in a unit of BMI. In addition, based on crude and adjusted RR models, the risk of BF cessation increases by 2% and 1% (crude RR = 1.02; 95% CI: 1.01–1.03 and adjusted RR = 1.01; 95% CI: 0.99–1.02) with an increase in one unit of BMI. Based on the result, the health care professionals and other key stakeholders should be aware of the impact excess weight, and that women who are overweight or obese should be encouraged with continued access to guidance, counseling and support, starting from conception, to maximize BF outcomes.

Effect of frenotomy on breastfeeding and reflux: results from the BRIEF prospective longitudinal cohort study

Objectives

To assess the Efficacy of Frenotomy with regard to Breastfeeding and Reflux Improvement (BRIEF) in infants with breastfeeding problems.

Materials and methods

A cohort of 175 consecutive breastfeeding women with breastfeeding and reflux problems related to a tongue-tie or lip-tie fulfilling the inclusion criteria was longitudinally followed for 6 months. The effect of frenotomy on these problems was studied by a standardized oral assessment and completing the validated Breastfeeding Self-Efficacy Short Form (BSES-SF), nipple pain score (Visual Analogue Scale, VAS), and Infant Gastroesophageal Reflux Questionnaire Revised (I-GERQ-R) questionnaires pre-frenotomy and at 1 week, 1 month, and 6 months’ post frenotomy.

Results

All 175 women completed the 1-month follow-up and 146 women the 6 months’ follow-up. Frenotomy resulted in a significant improvement of BSES-SF, nipple pain score, and I-GERQ-R after 1 week, which improvement maintained to be significant after 1 month for BSES-SF and I-GERQ-R, and after 6 months for I-GERQ-R. The improvements were irrespective of the type lip-tie or tongue-tie underlying the breast feeding and reflux problems. No post-operative complications were observed. About 60.7% of infants still was breastfed 6 months after treatment.

Conclusions

Frenotomy is a safe procedure with no post-operative complications and resulting in significant improvement of breastfeeding self-efficacy, nipple pain, and gastro-oesophageal reflux problems.

Clinical relevance

Frenotomy of a tongue-tie and or lip-tie can lead to improvement of breastfeeding and reflux problems irrespective of the type of tongue-tie or lip-tie and should be considered by clinicians as a proper tool to resolve these problems if non-interventional support did not help.

International trial register

ISRCTN64428423

Supplementary Information

The online version contains supplementary material available at 10.1007/s00784-020-03665-y.

Factors associated with exclusive breastfeeding at hospital discharge: a study using data from the Georgian Birth Registry

BACKGROUND

The World Health Organization recommends exclusive breastfeeding for six months, defined as no other solids or liquids besides breast milk and essential vitamins or medicines. Data about exclusive breastfeeding are limited in Georgia, and the information that exist are provided by national surveys, that present inconsistent numbers. Georgia has recently established a national birth registry, which includes information about early postpartum breastfeeding. The objective of this study was to identify factors associated with exclusive breastfeeding of term newborns at hospital discharge in Georgia, using national registry data.

METHODS

All live, singleton, term births registered in the Georgian Birth Registry in November and December 2017 were included, with a final study sample of 7134 newborns. Newborns exclusively breastfed at hospital discharge were compared with those who were not, and potential factors were assessed with logistic regression analysis. Hospital discharge normally occurred between 2 and 5 days postpartum.

RESULTS

The study identified several factors associated with nonexclusive breastfeeding of term newborns at hospital discharge in Georgia: maternal higher education compared to secondary education or less (Adjusted Odds Ratio [AOR] 0.75; 95% CI 0.59, 0.97), caesarean delivery compared to vaginal or assisted vaginal delivery (AOR 0.47; 95% CI 0.37, 0.60), birthweight < 2500 g compared to 3000-3499 g (AOR 0.51; 95% CI 0.27, 0.97), and admission to neonatal intensive care unit after delivery (AOR 0.02; 95% CI 0.02, 0.03). None of the following factors were associated with exclusive breastfeeding at discharge: mother's age, marital status, Body Mass Index (BMI), parity, in vitro fertilization, maternal intrapartum complications and the sex of the newborn.

CONCLUSIONS

To the authors' knowledge, this is the first time determinants of exclusive breastfeeding at hospital discharge have been studied in Georgia. Several factors associated with nonexclusive breastfeeding at discharge were identified, most noteworthy were caesarean delivery and admission to neonatal intensive care unit. These findings are of importance to the Georgian health authorities and maternal/child non-governmental organizations.

Early Breastfeeding Experiences Predict Maternal Self-Efficacy During the Transition to Parenthood

Objective: Breastfeeding can be challenging for new mothers. Women with high breastfeeding self-efficacy are more likely to breastfeed with confidence and are more likely to succeed in breastfeeding. The aim of this prospective longitudinal study was to test whether breastfeeding self-efficacy and breastfeeding experiences were related to trajectories of self-efficacy in the parenting domain during the transition to parenthood. Materials and Methods: A group of 1,091 primiparous women completed questionnaires at 32 weeks of gestation (maternal self-efficacy) and 3 months after giving birth (maternal self-efficacy, breastfeeding self-efficacy, and breastfeeding experiences). Only the women who started breastfeeding and completed questionnaires at both time points were included in the analyses (N = 817). Results: High breastfeeding self-efficacy significantly predicted increased maternal self-efficacy through the transition to parenthood. A successful breastfeeding experience fully explained this effect. Conclusion: The mediating effect of positive breastfeeding experiences on the relationship of breastfeeding self-efficacy and the change of maternal self-efficacy during the transition to parenthood implies breastfeeding to be an early target to enhance maternal self-efficacy. By pointing out breastfeeding as a genuine challenge during prenatal maternity courses, it might prepare mothers for one of their first experiences of parenthood. As a result, successful breastfeeding could be a steppingstone from positive prenatal expectations to growing confidence as a parent.

Keep Doing the Good Work: Impact of Coworker and Community Support on Continuation of Breastfeeding

Returning to work poses a challenge to new mothers' breastfeeding success during the first 6 months postpartum. While previous research has shown that breastfeeding-related workplace policy plays a significant role in women's decision to continue breastfeeding, the extent to which interpersonal factors such as coworkers' (lack of) support and stigma affect women's breastfeeding behavior is less understood. Through a cross-sectional survey with 500 working mothers, this research found that female coworker support of other women played an important role in affecting mothers' decision to continue breastfeeding after returning to work and contributed to breastfeeding self-efficacy. The findings suggest that mothers' perception of supportive coworker communication has an impact on sustained breastfeeding. Workplaces need to enhance the mother-friendly climate by encouraging and rewarding coworkers and providing support necessary for breastfeeding colleagues.

Association between birth weight and childhood cardiovascular disease risk factors in West Virginia

The reported associations between birth weight and childhood cardiovascular disease (CVD) risk factors have been inconsistent. In this study, we investigated the relationship between birth weight and CVD risk factors at 11 years of age. This study used longitudinally linked data from three cross-sectional datasets (N = 22,136) in West Virginia; analysis was restricted to children born full-term (N = 19,583). The outcome variables included resting blood pressure [systolic blood pressure (SBP), diastolic blood pressure (DBP)] and lipid profile [total cholesterol (TC), low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, non-HDL, and triglycerides (TG)]. Multiple regression analyses were performed, adjusting for child's body mass index (BMI), sociodemographics, and lifestyle characteristics. Unadjusted analyses showed a statistically significant association between birth weight and SBP, DBP, HDL, and TG. When adjusted for the child's BMI, the association between birth weight and HDL [b = 0.14 (95% CI: 0.11, 0.18) mg/dl per 1000 g increase] and between birth weight and TG [b = -0.007 (-0.008, -0.005) mg/dl per 1000 g increase] remained statistically significant. In the fully adjusted model, low birth weight was associated with higher LDL, non-HDL, and TGs, and lower HDL levels. The child's current BMI at 11 years of age partially (for HDL, non-HDL, and TG) and fully mediated (for SBP and DBP) the relationship between birth weight and select CVD risk factors. While effects were modest, these risk factors may persist and amplify with age, leading to potentially unfavorable consequences in later adulthood.

The effect of a breastfeeding support programme on breastfeeding duration and exclusivity: a quasi-experiment

Background

Breastfeeding has important positive long-term health consequences for infants and mothers. The World Health Organization recommends that all infants should be exclusively breastfed for six months or longer, and advises continuation of breastfeeding for two years or beyond. However, these recommendations are not met in many countries. This study examined whether a comprehensive, evidence-based breastfeeding intervention, the Breastfeeding Support Programme (BSP), promotes prolonged duration and exclusivity of breastfeeding among its participants.

Methods

A quasi-experimental design was used to compare breastfeeding duration and exclusivity in the BSP group (N = 66) to breastfeeding duration and exclusivity in a control group (N = 72). Participants who followed the BSP were provided with 6 consults delivered by a lactation consultant. The consults started during pregnancy and continued up until 10 weeks after delivery. Participants in the control group did not follow the BSP. Pretest and posttest questionnaires were administered through the internet. A Cox proportional hazards regression analysis was used to estimate adjusted hazard ratios (HR) and 95% confidence intervals (CI) for cessation of any and exclusive breastfeeding, while controlling for differences at baseline.

Results

The effect of the BSP on survival rates for any and exclusive breastfeeding were significant while controlling for differences between the two groups at baseline (respectively HR = 0.34, p < .001 [95% CI = 0.18–0.61] and HR = 0.46, p < .001 [95% CI = 0.29–0.72]). Among mothers in the BSP group there was on average 66% less risk of cessation of any breastfeeding and on average 54% less risk of cessation of exclusive breastfeeding at any point in time compared to those in the control group.

Conclusions

The BSP appears to be an effective means to delay cessation of any and exclusive breastfeeding cessation and therefore to increase breastfeeding duration and exclusivity. This is an important finding, because earlier cessation of breastfeeding than desired is a common problem in many countries. Future research into the effectiveness of the BSP could consider random assignment to conditions and test the effectiveness of the intervention in other populations to investigate further whether wide-scale implementation of this intervention could be useful to promote breastfeeding.

Electronic supplementary material

The online version of this article (10.1186/s12889-019-7331-y) contains supplementary material, which is available to authorized users.

Breastfeeding Persistence at 6 Months: Trends and Disparities from 2008 to 2015

OBJECTIVE

To assess trends and disparities in breastfeeding by maternal characteristics (race and ethnicity, age at delivery, obesity, parity, and level of education) and the relative importance among these for breastfeeding at 6 months.

STUDY DESIGN

This retrospective birth cohort study included 195 861 live singleton children born at 32-42 weeks of gestation from 2008 to 2015 within a single integrated healthcare system. All children had healthcare coverage during the first year of life. Maternal characteristics and breastfeeding status at 6 months of age were extracted from electronic medical records. Trends over time of any breastfeeding ≥6 months were evaluated for the 5 maternal characteristics. Robust Poisson regression models were used to estimate breastfeeding rate differences associated with each of the 5 characteristics. The relative importance among them associated with breastfeeding ≥6 months was assessed by comparing model quasi-likelihood information criteria.

RESULTS

Rates of breastfeeding ≥6 months significantly increased overall and among groups defined by the maternal characteristics. However, there was little improvement over time in closing disparities associated with maternal race and ethnicity, age at delivery, prepregnancy obesity status, and level of education. Education level contributed to the greatest disparity in breastfeeding ≥6 months. Maternal age was the second factor, followed by prepregnancy obesity and maternal race and ethnicity.

CONCLUSIONS

Breastfeeding outreach programs focusing on women with less than a college education, women <25 years old, and women from non-Hispanic black or Hispanic race and ethnicity may help to reduce disparities and improve breastfeeding persistence rates within integrated healthcare systems.

Association Between Breastfeeding and Childhood Cardiovascular Disease Risk Factors

Introduction The immediate benefits of breastfeeding are well-established but the long-term health benefits are less well-known. West Virginia (WV) has a higher prevalence of cardiovascular disease (CVD) and lower breastfeeding rates compared to national averages. There is a paucity of research examining the relationship between breastfeeding and subsequent childhood CVD risk factors, an issue of particular relevance in WV. Methods This study used longitudinally linked data from three cross-sectional datasets in WV (N = 11,980). The information on breastfeeding was obtained retrospectively via parental recall when the child was in the fifth grade. The outcome variables included blood pressure measures [systolic blood pressure (SBP), diastolic blood pressure (DBP)] and lipid profile [total cholesterol (TC), low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), non-HDL, and triglycerides (TG)]. Multiple regression analyses were performed, adjusting for childhood body mass index (BMI) and additional covariates. Results Only 43% of mothers self-reported ever breastfeeding. The unadjusted analysis showed that children who were ever vs. never breastfed had significantly lower SBP (b = - 1.39 mmHg; 95% CI - 1.97, - 0.81), DBP (b = - 0.79 mmHg; 95% CI - 1.26, - 0.33), log-TG (b = - 0.08; 95% CI - 0.1, - 0.05), and higher HDL (b = 0.95 mg/dL; 95% CI 0.33, 1.56). After adjustment for the child's BMI, socio-demographic and lifestyle factors, log-TG remained significantly associated with breastfeeding (b = - 0.04; 95% CI - 0.06, - 0.01; p = 0.01). Conclusion The observed protective effect of any breastfeeding on childhood TG level was small but significant. This finding provides some support for a protective effect of breastfeeding on later CVD risk.

Lifestyle intervention strategies in early life to improve pregnancy outcomes and long-term health of offspring: a narrative review

Adverse exposures during fetal life and the postnatal period influence physical, cognitive and emotional development, and predispose to an increased risk of various chronic diseases throughout the life course. Findings from large observational studies in various populations and experimental animal studies have identified different modifiable risk factors in early life. Adverse maternal lifestyle factors, including overweight, unhealthy diet, sedentary behavior, smoking, alcohol consumption and stress in the preconception period and during pregnancy, are the most common modifiable risk factors leading to a suboptimal in-utero environment for fetal development. In the postnatal period, breastfeeding, infant growth and infant dietary intake are important modifiable factors influencing long-term offspring health outcomes. Despite the large amount of findings from observational studies, translation to lifestyle interventions seems to be challenging. Currently, randomized controlled trials focused on the influence of lifestyle interventions in these critical periods on short-term and long-term maternal and offspring health outcomes are scarce, have major limitations and do not show strong effects on maternal and offspring outcomes. New and innovative approaches are needed to move from describing these causes of ill-health to start tackling them using intervention approaches. Future randomized controlled lifestyle intervention studies and innovative observational studies, using quasi-experimental designs, are needed focused on the effects of an integrated lifestyle advice from preconception onwards on pregnancy outcomes and long-term health outcomes in offspring on a population level.

Relationship between socioeconomic status and weight gain during infancy: The BeeBOFT study

BACKGROUND

Increased weight gain during infancy is a risk factor for obesity and related diseases in later life. The aim of the present study was to investigate the association between socioeconomic status (SES) and weight gain during infancy, and to identify the factors mediating the association between SES and infant weight gain.

METHODS

Subjects were 2513 parent-child dyads participating in a cluster randomized controlled intervention study. Family SES was indexed by maternal education level. Weight gain in different time windows (infant age 0-3, 0-6, and 6-12 months) was calculated by subtracting the weight for age z-score (WAZ) between the two time-points. Path analysis was performed to examine the mediating pathways linking SES and infant weight gain.

RESULTS

On average, infants of low-educated mothers had a lower birth weight and caught-up at approximately 6 months. In the period of 0-6 months, infants with low-educated mothers had an 0.42 (95% CI 0.27-0.57) higher gain in weight for age z-score compared to children with high-educated mothers. The association between maternal education level and increased infant weight gain in the period of 0-6 months can be explained by infant birth weight, gestational age at child birth, duration of breastfeeding, and age at introduction of complementary foods. After adjusting all the mediating factors, there was no association between maternal education level and infant weight gain.

CONCLUSION

Infants with lower SES had an increased weight gain during the first 6 months of infancy, and the effect can be explained by infant birth weight, gestational age at child birth, and infant feeding practices.

Infant breastfeeding and childhood general, visceral, liver, and pericardial fat measures assessed by magnetic resonance imaging

Background

Although a longer duration of breastfeeding has been associated with a lower risk of childhood obesity, the impact on specific organ fat depots is largely unknown.

Objective

We examined the associations of any breastfeeding, duration and exclusiveness of breastfeeding, and of age at introduction of solid foods with measures of general, visceral, and organ adiposity at 10 y.

Design

In a population-based prospective cohort study in 4444 children, we obtained information on infant feeding by questionnaires. At the mean age of 9.8 y, we estimated body mass index from height and weight; fat mass index and fat-free mass index by dual-energy X-ray absorptiometry; and visceral fat index, pericardial fat index, and liver fat fraction by MRI. MRI scans were performed in a subgroup of 2646 children.

Results

After adjustment for age and sex, we observed associations of infant feeding with all general, visceral, and organ fat outcomes, except for pericardial fat index, at the age of 10 y. After further adjustment for family-based sociodemographic, maternal lifestyle-related, and childhood factors, only the associations of shorter breastfeeding duration and nonexclusive breastfeeding with a lower fat-free mass index remained significant (P < 0.05). The associations of infant feeding with visceral fat index and liver fat fraction were attenuated to nonsignificant. Maternal education was found to be the strongest confounder.

Conclusion

Our results suggest that the assoiations of any breastfeeding, duration and exclusiveness of breastfeeding, and age at the introduction of solid foods with general, visceral, and organ fat measures at the age of 10 y are largely explained by family-based sociodemographic factors.

Educational intervention about breastfeeding among secondary school students

Purpose

Breastfeeding education in the school setting offers the opportunity to improve knowledge base and positively influence beliefs and intentions for students. The purpose of this paper is to analyze the effect of short education program among secondary school students on breastfeeding knowledge and intentions.

Design/methodology/approach

Total of 106 female and 155 male students from four different high schools in Bjelovar were given online questionnaire about intentions to breastfeed and test of knowledge about breastfeeding, both before and shortly after education. The effect of education and school on breastfeeding intentions and knowledge was examined using mixed design ANOVA. Univariate tests were used to examine relation of several independent variables to breastfeeding intention and knowledge scores before and after education.

Findings

Results showed statistically significant effect of education on both intentions and knowledge, whereas the effect of school was significant only for intentions. Students show more positive intentions and better knowledge about breastfeeding after education than before education.

Research limitations/implications

This paper does not entail validation of breastfeeding questionnaire and knowledge test. Due to comprehensiveness and report length, study on validity and reliability of measures is the subject of another paper.

Practical implications

The authors hope that results of the study will influence professional public in Croatia and encourage it to support implementation of breastfeeding education in curriculum.

Originality/value

This paper offers the first national intervention data in relation to breastfeeding intentions and knowledge among secondary school students. It provides an evidence for necessity of implementation of well-structured education module in regular curriculum of secondary education in Croatia.

The Hispanic Paradox: Socioeconomic Factors and Race/Ethnicity in Breastfeeding Outcomes

BACKGROUND

Breastfeeding has multiple benefits for both mother and infant. Previous studies have shown that Hispanic/Latina women have higher rates of breastfeeding and better health outcomes than non-Hispanic black (NHB) women of similar socioeconomic status. Our primary objective was to explore the association of race/ethnicity with breastfeeding rates and the impact of socioeconomic factors on initiation and continuation of breastfeeding.

MATERIALS AND METHODS

We performed a hypothesis-generating secondary analysis of a prospective cohort study of perinatal mental health in a diverse sample of 213 mothers. Twenty-eight participants self-identified as non-Hispanic white, 43 as NHB, and 142 as Hispanic/Latina. We examined bivariate relationships and performed logistic regression analysis for a series of maternal, infant, and psychosocial factors to examine their individual effect on the breastfeeding and race/ethnicity relationship odds ratio (OR).

RESULTS

Hispanic/Latina women were more likely to initiate exclusive breastfeeding at delivery compared with NHB women (OR 2.4, 95% confidence interval: 1.2-4.9, p = 0.01). Adjustment for maternal, infant, and psychosocial factors measured did not statistically significantly attenuate the OR for initiation of breastfeeding between NHB and Hispanic/Latina women. Women with a history of sexual abuse were also more likely to initiate exclusive breastfeeding (67%) compared with women without a sexual abuse history (54%, p < 0.05).

CONCLUSIONS

In this low socioeconomic status cohort study, Hispanic/Latina women had higher proportions of any amount of breastfeeding compared with their NHB counterparts. This difference was not attenuated by any of the maternal, infant, or psychosocial factors examined, although our secondary analysis of this prospective cohort was limited by the available covariates in the parent study.

Factors affecting breastfeeding adherence among Chinese mothers: A multicenter study

Breastfeeding is beneficial for both infant and mother, but discontinuation of breastfeeding is very common.To investigate maternal breastfeeding intention and the rate of breastfeeding based on the theory of reasoned action, and analyze the predominant factors associated with breastfeeding and breastfeeding problems.This observational study was conducted in 3 hospitals. Three researchers recruited women at 3 time points in the hospitals: initial documentation of pregnancy at the outpatient department, prenatal admission, and postpartum discharge. SPSS version 21 was used for statistical analyses. Significance was set at P < .05. In the multivariate analysis, binary logistic regression was used and odds ratios (ORs) with 95% confidence intervals (CI) were calculated.We recruited 1260 women, with 420 pregnant women at each time point. 55.1% of the infants were exclusively breastfed, 40.6% were mixed fed, and 4.3% were formula fed when discharged from hospital. A total of 53.8% of the mothers declared having breastfeeding problems. The multivariate analysis showed that nonsuccessful breastfeeding was associated with neonatal birth length, food intake before breastfeeding, infrequent sucking, the intention of breastfeeding, understanding level of the benefits of breastfeeding and that breastfeeding problems were related with the understanding level of the benefits of breastfeeding, neonatal birth length, normal vaginal delivery, breast size, the experience of breastfeeding, use of pacifier and the needs of family member's support in breastfeeding.Most mothers who intended to practice exclusive breastfeeding initially chose to add formula and had breastfeeding problems when discharged from hospital. Successful breastfeeding depends on antenatal and postnatal breastfeeding education and on support provided by healthcare professionals.

Explaining socioeconomic inequalities in exclusive breast feeding in Norway

BACKGROUND AND OBJECTIVE

In high-income countries, lower socioeconomic position is associated with lower rates of breast feeding, but it is unclear what factors explain this inequality. Our objective was to examine the association between socioeconomic position and exclusive breast feeding, and to explore whether socioeconomic inequality in exclusive breast feeding could be explained by other sociodemographic characteristics, for example, maternal age and parity, smoking habits, birth characteristics, quality of counselling and breastfeeding difficulties.

METHODS

We used data from a questionnaire sent to mothers when their infants were five completed months as part of a trial of a breastfeeding intervention in Norway. We used maternal education as an indicator of socioeconomic position. Analyses of 1598 mother-infant pairs were conducted using logistic regression to assess explanatory factors of educational inequalities in breast feeding.

RESULTS

Socioeconomic inequalities in exclusive breast feeding were present from the beginning and persisted for five completed months, when 22% of the most educated mothers exclusively breast fed compared with 7% of the least educated mothers: OR 3.39 (95% CI 1.74 to 6.61). After adjustment for all potentially explanatory factors, the OR was reduced to 1.49 (95% CI 0.70 to 3.14). This decrease in educational inequality seemed to be mainly driven by sociodemographic factors, smoking habits and breastfeeding difficulties, in particular perceived milk insufficiency.

CONCLUSIONS

Socioeconomic inequalities in exclusive breast feeding at 5 months were largely explained by sociodemographic factors, but also by modifiable factors, such as smoking habits and breastfeeding difficulties, which can be amenable to public health interventions.

TRIAL REGISTRATION NUMBER

NCT01025362.

Maternal Education Is Associated with Disparities in Breastfeeding at Time of Discharge but Not at Initiation of Enteral Feeding in the Neonatal Intensive Care Unit

OBJECTIVE

To investigate the relationship between maternal education and breastfeeding in very preterm infants admitted to neonatal intensive care units.

STUDY DESIGN

This prospective, population-based cohort study analyzed the data of all very preterm infants admitted to neonatal care during 1 year in 3 regions in Italy (Lazio, Emilia-Romagna, and Marche). The use of mothers' own milk was recorded at initial enteral feedings and at hospital discharge. We used multilevel logistic analysis to model the association between maternal education and breastfeeding outcomes, adjusting for maternal age and country of birth. Region was included as random effect.

RESULTS

There were 1047 very preterm infants who received enteral feeding, and 975 were discharged alive. At discharge, the use of mother's own milk, exclusively or not, and feeding directly at the breast were significantly more likely for mothers with an upper secondary education or higher. We found no relationship between maternal education and type of milk at initial enteral feedings. However, the exclusive early use of the mother's own milk at initial feedings was related significantly with receiving any maternal milk and feeding directly at the breast at discharge from hospital, and the association with feeding at the breast was stronger for the least educated mothers.

CONCLUSION

In this population-based cohort of very preterm infants, we found a significant and positive association between maternal education and the likelihood of receiving their mother's own milk at the time of discharge. In light of the proven benefits of maternal milk, strategies to support breastfeeding should be targeted to mothers with less education.

Nativity, Country of Education, and Mexican-Origin Women's Breastfeeding Behaviors in the First 10 Months Postpartum

BACKGROUND

Breastfeeding is associated with numerous health benefits for the infant and mother. Latina women in the United States have historically had high overall rates of initiation and duration of breastfeeding. However, these rates vary by nativity and time lived in the United States. Exclusive breastfeeding patterns among Latina women are unclear. In this study, we investigate the current and exclusive breastfeeding patterns of Mexican-origin women at four time points from delivery to 10 months postpartum to determine the combined association of nativity and country of education with breastfeeding duration and supplementation.

METHODS

Data are from the Postpartum Contraception Study, a prospective cohort study of postpartum women ages 18-44 recruited from three hospitals in Austin and El Paso, Texas. We included Mexican-origin women who were born in either the United States or Mexico in the analytic sample (n = 593).

RESULTS

Women completing schooling in Mexico had higher rates of overall breastfeeding throughout the study period than women educated in the United States, regardless of country of birth. This trend held in multivariate models while diminishing over time. Women born in Mexico who completed their schooling in the United States were least likely to exclusively breastfeed.

DISCUSSION

Country of education should also be considered when assessing Latina women's risk for breastfeeding discontinuation. Efforts should be made to identify the barriers and facilitators to breastfeeding among US-educated Mexican-origin women to enhance existing breastfeeding promotion efforts in the United States.

Association between home birth and breast feeding outcomes: a cross-sectional study in 28 125 mother-infant pairs from Ireland and the UK

OBJECTIVES

To examine the association between breast feeding outcomes and place of birth (home vs hospital birth).

DESIGN

Population-based cross-sectional study.

SETTING

Ireland and UK.

PARTICIPANTS

10 604 mother-infant pairs from the Growing Up in Ireland study (GUI, 2008-2009) and 17 521 pairs from the UK Millennium Cohort Study (UKMCS, 2001-2002) at low risk of delivery complications were included in the study.

PRIMARY AND SECONDARY OUTCOME MEASURES

Breast feeding initiation, exclusivity and duration.

RESULTS

Home birth was found to be significantly associated with breast feeding at all examined time points, including at birth, 8 weeks, 6 months and breast feeding exclusively at 6 months. In GUI, adjusted OR was 1.90 (95% CI 1.19 to 3.02), 1.78 (1.18 to 2.69), 1.85 (1.23 to 2.77) and 2.77 (1.78 to 4.33), respectively, and in UKMCS it was 2.49 (1.84 to 3.44), 2.49 (1.92 to 3.26), 2.90 (2.25 to 3.73) and 2.24 (1.14 to 4.03).

CONCLUSIONS

Home birth was strongly associated with improved breast feeding outcomes in low-risk deliveries. While the association between home birth and breast feeding is unlikely to be directly causal, further research is needed to determine which factor(s) drive the observed differences, to facilitate development of perinatal care that supports breast feeding.

Effectiveness of Baby-friendly community health services on exclusive breastfeeding and maternal satisfaction: a pragmatic trial

The WHO/UNICEF Baby-friendly Hospital Initiative has been shown to increase breastfeeding rates, but uncertainty remains about effective methods to improve breastfeeding in community health services. The aim of this pragmatic cluster quasi-randomised controlled trial was to assess the effectiveness of implementing the Baby-friendly Initiative (BFI) in community health services. The primary outcome was exclusive breastfeeding until 6 months in healthy babies. Secondary outcomes were other breastfeeding indicators, mothers' satisfaction with the breastfeeding experience, and perceived pressure to breastfeed. A total of 54 Norwegian municipalities were allocated by alternation to the BFI in community health service intervention or routine care. All mothers with infants of five completed months were invited to participate (n = 3948), and 1051 mothers in the intervention arm and 981 in the comparison arm returned the questionnaire. Analyses were by intention to treat. Women in the intervention group were more likely to breastfeed exclusively compared with those who received routine care: 17.9% vs. 14.1% until 6 months [cluster adjusted odds ratio (OR) = 1.33; 95% confidence interval (CI): 1.03, 1.72; P = 0.03], 41.4% vs. 35.8% until 5 months [cluster adjusted OR = 1.39; 95% CI: 1.09, 1.77; P = 0.01], and 72.1% vs. 68.2% for any breastfeeding until 6 months [cluster adjusted OR = 1.24; 95% CI: 0.99, 1.54; P = 0.06]. The intervention had no effect on breastfeeding until 12 months. Maternal breastfeeding experience in the two groups did not differ, neither did perceived breastfeeding pressure from staff in the community health services. In conclusion, the BFI in community health services increased rates of exclusive breastfeeding until 6 months. © 2015 Blackwell Publishing Ltd.

Prenatal Anxiety and Infant Feeding Outcomes: A Systematic Review

Prenatal anxiety may negatively affect infant health in multiple domains, including infant feeding. However, the relationship between prenatal anxiety and infant feeding is not well understood. Given the benefits of recommended infant feeding practices, clarifying this relationship is important. This review was conducted to examine the relationship between prenatal anxiety and infant feeding outcomes. Electronic searches were performed in relevant databases. A hand search of selected journals and reference lists of included articles was then conducted. All studies were considered that provided information related to infant feeding outcomes and anxiety during pregnancy. Quality assessment and data extraction were conducted by 2 reviewers; 99 studies were identified, of which 6 were eligible. No associations were found between prenatal anxiety and breastfeeding initiation or breastfeeding in any quantity. However, relationships between high levels of prenatal anxiety and a reduction in both breastfeeding intention and breastfeeding exclusivity were identified. The review was limited by the small number of studies included. Sample sizes lacking power and heterogeneous measures and definitions all significantly affected the comparability of findings. It is concluded that there is insufficient evidence to clarify the relationship between prenatal anxiety and infant feeding outcomes.

Association between breastfeeding support and breastfeeding rates in the UK: a comparison of late preterm and term infants

OBJECTIVE

To explore the association between breastfeeding support and breastfeeding among late preterm (gestation 34-36 weeks) and term (gestation ≥37 weeks) infants.

METHODS

Secondary analysis of the UK 2010 Infant Feeding Survey. Logistic regression was used to determine the association of breastfeeding support with breastfeeding at 10 days and 6 weeks in late preterm and term infants.

RESULTS

The study included 14,525 term and 579 late preterm infants. A total of 11,729 infants initiated breastfeeding (11,292 (81.1%) term, 437 (79.4%) late preterm infants, p=0.425). Of these, 9230 (84.3%) term and 365 (85.6%) late preterm infants were breastfeeding at 10 days (p=0.586); of these 7547 (82.0%) term and 281 (75.4%) late preterm infants were still breastfeeding at 6 weeks (p=0.012). Mothers who reported receiving contact details for breastfeeding support groups had a higher likelihood of breastfeeding late preterm (adjusted ORs, aOR 3.14, 95% CI 1.40 to 7.04) and term infants (aOR 2.24, 95% CI 1.86 to 2.68) at 10 days and term infants at 6 weeks (aOR 1.83, 95% CI 1.51 to 2.22). Those who reported that they did not receive enough help with breastfeeding in hospital had a lower likelihood of breastfeeding late preterm at 10 days and term infants at 10 days and 6 weeks, compared to those who reported having enough help.

CONCLUSIONS

Receiving sufficient help with breastfeeding in hospital and the contact details for breastfeeding support groups is associated with breastfeeding term infants up to 6 weeks and late preterm infants at 10 days.

A Priori and a Posteriori Dietary Patterns during Pregnancy and Gestational Weight Gain: The Generation R Study

Abnormal gestational weight gain (GWG) is associated with adverse pregnancy outcomes. We examined whether dietary patterns are associated with GWG. Participants included 3374 pregnant women from a population-based cohort in the Netherlands. Dietary intake during pregnancy was assessed with food-frequency questionnaires. Three a posteriori-derived dietary patterns were identified using principal component analysis: a "Vegetable, oil and fish", a "Nuts, high-fiber cereals and soy", and a "Margarine, sugar and snacks" pattern. The a priori-defined dietary pattern was based on national dietary recommendations. Weight was repeatedly measured around 13, 20 and 30 weeks of pregnancy; pre-pregnancy and maximum weight were self-reported. Normal weight women with high adherence to the "Vegetable, oil and fish" pattern had higher early-pregnancy GWG than those with low adherence (43 g/week (95% CI 16; 69) for highest vs. lowest quartile (Q)). Adherence to the "Margarine, sugar and snacks" pattern was associated with a higher prevalence of excessive GWG (OR 1.45 (95% CI 1.06; 1.99) Q4 vs. Q1). Normal weight women with higher scores on the "Nuts, high-fiber cereals and soy" pattern had more moderate GWG than women with lower scores (-0.01 (95% CI -0.02; -0.00) per SD). The a priori-defined pattern was not associated with GWG. To conclude, specific dietary patterns may play a role in early pregnancy but are not consistently associated with GWG.

The effect of mother's educational status on early initiation of breastfeeding: further analysis of three consecutive Nepal Demographic and Health Surveys

Background

The World Health Organization recommends initiating breastfeeding within the first hour of birth. This study is aimed at assessing the effect of the mother’s education on early initiation of breastfeeding.

Methods

Data from the Nepal Demographic and Health Surveys (NDHS) 2001, 2006 and 2011 were used which included 12,845 last born children born within 5 years before the surveys. Early initiation of breastfeeding was defined as the initiation of breastfeeding within the first hour after birth. Hierarchical modelling was used to ascertain the association of maternal education and early initiation of breastfeeding, after controlling for other covariates in a multiple logistic regression.

Results

Maternal education was associated with a higher likelihood of early initiation of breastfeeding in each survey. Pooled data analysis revealed higher odds of early initiation of breastfeeding among the mothers with primary education (adjusted odds ratio (OR) 1.24, 95 % confidence interval (CI): 1.09, 1.42) and secondary or higher education (OR: 1.63 95 % CI: 1.42, 1.88). In the most recent NDHS 2011 survey, odds of early initiation of breastfeeding was higher among mothers with primary education (OR: 1.52; 95 % CI: 1.21, 1.91) and mothers with secondary or higher education (OR: 2.20; 95 % CI: 1.76, 2.76) compared to mothers with no education. Similarly, the odds of early initiation of breastfeeding was higher among mothers with secondary and higher education in the 2006 data (OR: 1.66; 95 % CI: 1.30, 2.12) and in 2001 (OR = 1.30; 95 % CI: 1.00, 1.67).

Conclusions

As the association between a mother’s educational status and her likelihood of early initiation of breastfeeding increases, long-term approaches to prioritising education for women and girls should be explored. In the short term, uneducated mothers should be targeted with breastfeeding promotion strategies such as counselling and peer education.

Electronic supplementary material

The online version of this article (doi:10.1186/s12889-015-2405-y) contains supplementary material, which is available to authorized users.

Association between Breastfeeding and Childhood Obesity: Analysis of a Linked Longitudinal Study of Rural Appalachian Fifth-Grade Children

INTRODUCTION

Although breastfeeding is associated with improving numerous health outcomes for the child, its role in reducing childhood obesity is contested. Despite this controversy, both the CDC and the US Department of Health and Human Services promote breastfeeding as one of the strategies for reducing childhood obesity. Rural Appalachia has one of the highest rates of childhood obesity and low rates of breastfeeding, compared to rest of the nation. The aim of this study was to examine the association between breastfeeding and childhood obesity at 11 years in the rural Appalachian state of West Virginia (WV).

METHODS

The study used linked data from two cross-sectional data sets to examine this relationship longitudinally in fifth-grade WV children. The main outcome variable was BMI adjusted percent (BMI%) and the main exposure was defined as occurrence of breastfeeding. Mean BMI% of children who were not breastfed was significantly higher, compared to children who were breastfed.

RESULTS

The result of the multiple regression analysis showed that breastfeeding significantly predicted BMI% of children after controlling for maternal education, health insurance, family history of hypercholesterolemia and diabetes, child's asthma status, and birth weight of the infant.

CONCLUSIONS

Our results are consistent with other studies that have shown a significant, but small, inverse association between breastfeeding and childhood obesity. Findings from this study suggest the need to improve breastfeeding rates in the rural Appalachian state of WV as one of the potential strategies to prevent obesity during childhood and adolescence.

Decreased memory B cells and increased CD8 memory T cells in blood of breastfed children: the generation R study

Background

Breastfeeding provides a protective effect against infectious diseases in infancy. Still, immunological evidence for enhanced adaptive immunity in breastfed children remains inconclusive.

Objective

To determine whether breastfeeding affects B- and T-cell memory in the first years of life.

Methods

We performed immunophenotypic analysis on blood samples within a population-based prospective cohort study. Participants included children at 6 months (n=258), 14 months (n=166), 25 months (n=112) and 6 years of age (n=332) with both data on breastfeeding and blood lymphocytes. Total B- and T-cell numbers and their memory subsets were determined with 6-color flow cytometry. Mothers completed questionnaires on breastfeeding when their children were aged 2, 6, and 12 months. Multiple linear regression models with adjustments for potential confounders were performed.

Results

Per month continuation of breastfeeding, a 3% (95% CI -6, -1) decrease in CD27+IgM+, a 2% (95 CI % -5, -1) decrease in CD27+IgA+ and a 2% (95% CI -4, -1) decrease in CD27-IgG+ memory B cell numbers were observed at 6 months of age. CD8 T-cell numbers at 6 months of age were 20% (95% CI 3, 37) higher in breastfed than in non-breastfed infants. This was mainly found for central memory CD8 T cells and associated with exposure to breast milk, rather than duration. The same trend was observed at 14 months, but associations disappeared at older ages.

Conclusions

Longer breastfeeding is associated with increased CD8 T-cell memory, but not B-cell memory numbers in the first 6 months of life. This transient skewing towards T cell memory might contribute to the protective effect against infectious diseases in infancy.

Does breastfeeding behavior run in families? Evidence from twins, their sisters and their mothers in the Netherlands

The aim of the present article was to study the prevalence and the heritability of the initiation of breastfeeding in the Netherlands. The study was carried out in 5,581 participants from the Netherlands Twin Register, and included female twins, their sisters and mothers. All of the participants were born between 1911 and 1991. Breastfeeding was self-reported by the participants, and its prevalence was estimated conditional on birth cohort (born before 1955, 1955-1964, 1965-1974, 1975, or later). To estimate the heritability, we conducted extended twin-family modeling using the SEM package OpenMx in R. Mothers of twins had lower prevalence to initiate breastfeeding and the prevalence of initiation of breastfeeding increased with birth cohort: among mothers of twins 66% in the oldest (pre-1955) to 74% in the youngest (post-1974) and among mothers, who were twins themselves or sisters of twins, 79% in the oldest (pre-1955) to 85% in the youngest (post-1974). When accounting for prevalence differences between mothers of twins and other women, heritability of initiation of breastfeeding was 70%. However, the familial resemblance for sister and mother-daughter pairs was clearly lower than for DZ twin pairs, but as the number of non-twin sisters was relatively low, this observation did not lead to a significant contribution of a special shared twin environment.

Breastfeeding duration and weight gain trajectory in infancy

BACKGROUND AND OBJECTIVES

Short breastfeeding duration may exacerbate accelerated early growth, which is linked to higher obesity risk in later life. This study tested the hypothesis that infants at higher risk for obesity were more likely to be members of a rising weight-for-length (WFL) z score trajectory if breastfed for shorter durations.

METHODS

This prospective, observational study recruited women from an obstetric patient population in rural central New York. Medical records of children born to women in the cohort were audited for weight and length measurements (n = 595). We identified weight gain trajectories for infants' WFL z scores from 0 to 24 months by using maximum likelihood latent class models. Individual risk factors associated with weight gain trajectories (P ≤ .05) were included in an obesity risk index. Logistic regression analysis was performed to investigate whether the association between breastfeeding duration (<2 months, 2-4 months, >4 months) and weight gain trajectory varied across obesity risk groups.

RESULTS

Rising and stable weight gain trajectories emerged. The obesity risk index included maternal BMI, education, and smoking during pregnancy. High-risk infants breastfed for <2 months were more likely to belong to a rising rather than stable weight gain trajectory (odds ratio, 2.55; 95% confidence interval, 1.14-5.72; P = .02).

CONCLUSIONS

Infants at the highest risk for rising weight patterns appear to benefit the most from longer breastfeeding duration. Targeting mothers of high-risk infants for breastfeeding promotion and support may be protective against overweight and obesity during a critical window of development.

It takes a mother to practise breastfeeding: Women's perceptions of breastfeeding during the period of intention

BACKGROUND

In the Netherlands, 81% of mothers initiate breastfeeding. After one month the percentage of mothers still breastfeeding drops, despite positive intentions. Little is known about women's perceptions of breastfeeding during the period of intention.

AIM

This qualitative study aimed to gain insight into these perceptions among first-time mothers from middle and high socioeconomic backgrounds in the northern part of the Netherlands.

METHODS

We used the theory of planned behaviour as the deductive model. In 2008, 16 in-depth interviews were conducted with 8 mothers who intended to breastfeed. The interviews were conducted at two time points (prepartum and postpartum) and covered the same period (that is, from the time when the intention was formed until after childbirth). The interviews were transcribed verbatim and analysed using grounded theory.

FINDINGS

Five inductive themes were identified: combining breastfeeding with work, learning about breastfeeding, making arrangements for childbirth, reflecting on the intention, and becoming a mother. During the extended period of intention, the women anticipated breastfeeding, but were cautious in expressing their intentions. They felt that the experience of becoming a mother would be critical to their breastfeeding outcomes.

CONCLUSION

The theory of planned behaviour has been widely used in breastfeeding research. However, the period of intention is relatively long for breastfeeding. Rather than recommending an intensification of antenatal breastfeeding education, recommendations must incorporate the awareness that practising breastfeeding should not be considered the continuous outcome of the intention to do so - it takes a mother to practise breastfeeding.

General and abdominal fat outcomes in school-age children associated with infant breastfeeding patterns

BACKGROUND

Breastfeeding may have a protective effect on the development of obesity in later life. Not much is known about the effects of infant feeding on more-specific fat measures.

OBJECTIVE

We examined associations of breastfeeding duration and exclusiveness and age at the introduction of solid foods with general and abdominal fat outcomes in children.

DESIGN

We performed a population-based, prospective cohort study in 5063 children. Information about infant feeding was obtained by using questionnaires. At the median age of 6.0 y (95% range: 5.7 y, 6.8 y), we measured childhood anthropometric measures, total fat mass and the android:gynoid fat ratio by using dual-energy X-ray absorptiometry, and preperitoneal abdominal fat by using ultrasound.

RESULTS

We observed that, in the models adjusted for child age, sex, and height only, a shorter breastfeeding duration, nonexclusive breastfeeding, and younger age at the introduction of solid foods were associated with higher childhood general and abdominal fat measures (P-trend < 0.05) but not with higher childhood body mass index. The introduction of solid foods at a younger age but not breastfeeding duration or exclusivity was associated with higher risk of overweight or obesity (OR: 2.05; 95% CI: 1.41, 2.90). After adjustment for family-based sociodemographic, maternal lifestyle, and childhood factors, the introduction of solid food between 4 and 4.9 mo of age was associated with higher risks of overweight or obesity, but the overall trend was not significant.

CONCLUSIONS

Associations of infant breastfeeding and age at the introduction of solid foods with general and abdominal fat outcomes are explained by sociodemographic and lifestyle-related factors. Whether infant dietary composition affects specific fat outcomes at older ages should be further studied.

Infant diet and metabolic outcomes in school-age children. The Generation R Study

BACKGROUND

Breastfeeding duration is associated with the risks of cardio-metabolic diseases in adulthood. We examined the associations of infant feeding patterns with metabolic outcomes in children and whether any association was explained by family-based socio-demographic, maternal lifestyle-related or childhood factors.

SUBJECTS/METHODS

We performed a population-based prospective cohort study in 3417 children to examine the associations of breastfeeding duration and exclusivity and age at introduction of solid foods with blood levels of lipids, insulin and C-peptide and risk of clustering of cardio-metabolic risk factors at the median age of 6.0 years (90% range 5.7-6.8).

RESULTS

We observed that, in the models only adjusted for child's age and sex, ever breastfeeding was not associated with childhood blood levels of lipids but was associated with higher insulin and C-peptide concentrations (P-value<0.05). Breastfeeding duration and exclusivity were not consistently associated with metabolic outcomes. Early introduction of solid foods was associated with higher levels of total cholesterol (P-value<0.05) but not with high-density lipoprotein and low-density lipoprotein cholesterol, triglycerides and insulin levels. Shorter breastfeeding duration and exclusive breastfeeding were associated with increased risks of clustering of cardio-metabolic risk factors. After additional adjustment for family, maternal and childhood factors, none of these associations remained significant.

CONCLUSIONS

In conclusion, we found no consistent associations of infant feeding patterns with metabolic outcomes at school age, after taking into account family-based socio-demographic, maternal lifestyle-related or childhood factors. Whether infant diet composition influences metabolic outcomes in later life should be further studied.

Feeding and smoking habits as cumulative risk factors for early childhood caries in toddlers, after adjustment for several behavioral determinants: a retrospective study

BACKGROUND

Several maternal health determinants during the first period of life of the child, as feeding practice, smoking habit and socio-economic level, are involved in early childhood health problems, as caries development. The potential associations among early childhood caries, feeding practices, maternal and environmental smoking exposure, Socio-Economic Status (SES) and several behavioral determinants were investigated.

METHODS

Italian toddlers (n = 2395) aged 24-30 months were recruited and information on feeding practices, sweet dietary habit, maternal smoking habit, SES, and fluoride supplementation in the first year of life was obtained throughout a questionnaire administered to mothers. Caries lesions in toddlers were identified in visual/tactile examinations and classified using the International Caries Detection and Assessment System (ICDAS). Associations between toddlers' caries data and mothers' questionnaire data were assessed using chi-squared test. Ordinal logistic regression was used to analyze associations among caries severity level (ICDAS score), behavioral factors and SES (using mean housing price per square meter as a proxy).

RESULTS

Caries prevalence and severity levels were significantly lower in toddlers who were exclusively breastfed and those who received mixed feeding with a moderate-high breast milk component, compared with toddlers who received low mixed feeding and those exclusively fed with formula (p < 0.01). No moderate and high caries severity levels were observed in an exclusively breastfed children. High caries severity levels were significantly associated with sweet beverages (p < 0.04) and SES (p < 0.01). Toddlers whose mothers smoked five or more cigarettes/day during pregnancy showed a higher caries severity level (p < 0.01) respect to those whose mothers did not smoke. Environmental exposure to smoke during the first year of life was also significantly associated with caries severity (odds ratio =7.14, 95% confidence interval = 6.07-7.28). No association was observed between caries severity level and fluoride supplementation. More than 50% of toddlers belonging to families with a low SES, showed moderate or high severity caries levels (p < 0.01).

CONCLUSIONS

Higher caries severity levels were observed in toddlers fed with infant formula and exposed to smoke during pregnancy living in area with a low mean housing price per square meter.

Is breast truly best? Estimating the effects of breastfeeding on long-term child health and wellbeing in the United States using sibling comparisons

Breastfeeding rates in the U.S. are socially patterned. Previous research has documented startling racial and socioeconomic disparities in infant feeding practices. However, much of the empirical evidence regarding the effects of breastfeeding on long-term child health and wellbeing does not adequately address the high degree of selection into breastfeeding. To address this important shortcoming, we employ sibling comparisons in conjunction with 25 years of panel data from the National Longitudinal Survey of Youth (NLSY) to approximate a natural experiment and more accurately estimate what a particular child's outcome would be if he/she had been differently fed during infancy. Results from standard multiple regression models suggest that children aged 4 to 14 who were breast- as opposed to bottle-fed did significantly better on 10 of the 11 outcomes studied. Once we restrict analyses to siblings and incorporate within-family fixed effects, estimates of the association between breastfeeding and all but one indicator of child health and wellbeing dramatically decrease and fail to maintain statistical significance. Our results suggest that much of the beneficial long-term effects typically attributed to breastfeeding, per se, may primarily be due to selection pressures into infant feeding practices along key demographic characteristics such as race and socioeconomic status.

Increased breastfeeding rates in black women after a treatment intervention

There has been a considerable increase in rates of breastfeeding in the United States. Despite these trends, black women continue to fall below medical recommendations. Impoverished and poorly educated women also have a comparatively lower rate of breastfeeding. Provider encouragement and supportive interventions increase breastfeeding initiation among women of all backgrounds. The data presented come from a three-site randomized controlled bilingual depression treatment trial from 2005 to 2011 that examined the comparative effectiveness of interpersonal psychotherapy and a parenting education program. Breastfeeding education and support were provided for the majority of participants in each intervention. Breastfeeding status was queried at postpartum week 4. We found higher rates of breastfeeding in black women compared with those reported in national surveys. The black breastfeeding rate did not significantly differ from that of white or Hispanic women. American-born black women were just as likely to breastfeed as American-born white women, both at significantly greater rates than American-born Hispanic women. We also found no differences in breastfeeding rate in poorly educated and impoverished women. These data must be seen against the backdrop of a significant intervention to treat depression. Because breastfeeding interventions have been shown to increase breastfeeding rates, the support provided in our study likely increased rates in groups that lag behind.

Low maternal education is associated with increased growth velocity in the first year of life and in early childhood: the ABCD study

The objective of this study is first to examine the relation of maternal education and growth velocity during the first year of life and early childhood (1-5 years). The second objective is to determine the potential explanatory role of standardized birth weight, maternal smoking during pregnancy, maternal prepregnancy body mass index (BMI), and infant feeding practice in this relation. We used longitudinal growth data of 1,684 participants with Dutch ethnicity participating in a population-based cohort study (Amsterdam Born Children and their Development study). Growth velocity of weight and of weight-for-length were calculated by subtracting the weight and weight-for-length standard deviation scores (SDS), respectively of two time periods. In the first year of life, children with low-educated mothers had an increase in SDS of 0.26 (95 % confidence interval (CI) 0.08-0.45) for weight compared to children with high-educated mothers. In early childhood, children with low-educated mothers had a 0.27 SDS (95 % CI 0.11-0.42) increase for weight-for-length, compared to children with high-educated mothers. Using path analysis, these inequalities could partly be explained by maternal smoking, duration of breastfeeding, maternal age, and maternal BMI.

CONCLUSION

Children with low-educated mothers had an increased weight gain during the first year of life and an increased weight-for-length gain in early childhood compared to children with high-educated mothers. Although underlying mechanisms were not completely clarified, an optimal duration of breastfeeding, cessation of maternal smoking, and reduction of maternal BMI seem to reduce these educational inequalities in early growth and possible adverse consequences of accelerated growth.