Impact of prelacteal feeds and neonatal introduction of breast milk substitutes on breastfeeding outcomes: A systematic review and meta‐analysis

Positive changes in breastfeeding and complementary feeding indicators in Brazil are associated with favorable nurturing care environments

OBJECTIVES

To analyze trends in breastfeeding and complementary feeding indicators for infants and young children receiving primary health care (PHC) services in Brazil, considering the contextual aspects of local nurturing care (NC) environments.

STUDY DESIGN

Ecological time-series study.

METHODS

Ten feeding indicators were extracted from 1,055,907 food intake records of children aged <2 years reported by PHC facilities from 2015 to 2019. Local NC environments were assessed with the Brazilian Early Childhood Friendly Municipal Index, calculating overall and stratified scores for the NC domains of adequate nutrition, good health, opportunities for early learning, and security and safety. Prais-Winsten regression was used to calculate annual percent changes (APC) by sex and the contrast in APC between the lower and upper quintiles of NC scores. Positive or negative APC with P-values <0.05 represented increasing or decreasing trends.

RESULTS

No significant trends of exclusive and continued breastfeeding, food introduction, or minimum dietary diversity were observed, with 2019 prevalences of 54.5%, 45.2%, 92.5%, and 78.2%, respectively. Increasing trends were observed for mixed milk feeding (2019: 19.2%; APC, +2.42%) and minimum meal frequency (2019: 61.1%; APC, +2.56%), while decreasing trends were observed for sweet beverage consumption (2019: 31.9%; APC, -5.92%) and unhealthy foods (2019: 16.1%; APC, -4.69%). Indicator improvements were significantly stronger in environments more favorable for NC.

CONCLUSIONS

Although the indicators did not meet global targets for infant feeding practices, the results suggest that the local NC environment encompasses facilitators that may be strategic in the design of early childhood programs and policies to improve nutrition.

Do various types of prelacteal feeding (PLF) have different associations with breastfeeding duration in Indonesia? A cross-sectional study using Indonesia Demographic and Health Survey datasets

INTRODUCTION

Prelacteal feeding (PLF) is anything other than breastmilk given to newborns in the first few days of birth and/or before breastfeeding is established. PLF comes in many forms and is known as a challenge to optimal breastfeeding. Interestingly, both breastfeeding and PLF are common in Indonesia. This study investigated the association between PLF (any PLF, formula, honey, water and other milk) and breastfeeding duration.

METHODS

This study used Indonesia Demographic and Health Surveys data from 2002, 2007 and 2017. Sample sizes were 5558 (2007), 6268 (2007) and 6227 (2017) mothers whose last child was aged 0-23 months. We used Cox regression survival analysis to assess the association between PLF and breastfeeding duration, estimating hazard ratios (HR) for stopping earlier.

RESULTS

Overall PLF was prevalent (59%, 67% and 45% in 2002, 2007 and 2017, respectively), with formula being the most common (38%, 50% and 25%). No association between any PLF and breastfeeding duration in 2002 (HR 0.90 (95% CI 0.70 to 1.16)), but in 2007 and 2017, mothers who gave any PLF were more likely to stop breastfeeding earlier than those who did not (HR 1.33 (95% CI 1.11 to 1.61) and 1.47 (95% CI 1.28 to 1.69), respectively), especially in the first 6 months (HR 2.13 (95% CI 1.55 to 2.92) and 2.07 (95% CI 1.74 to 2.47), respectively). This association was more consistent for milk-based PLF. For example, HR in 2017 was 2.13 (95% CI 1.78 to 2.53) for prelacteal formula and 1.73 (95% CI 1.39 to 2.15) for other milk. The associations were inconsistent for the other PLF types. Prelacteal water showed no association while prelacteal honey showed some association with a longer breastfeeding duration in 2002 and 2007.

CONCLUSION

The impact of PLF on breastfeeding duration varied by type. While this study supports current recommendations to avoid PLF unless medically indicated, the potential consequences of different PLF types on breastfeeding outcomes should be clearly communicated to healthcare providers and mothers. Further research should explore the reasons for the high PLF prevalence in this setting.

Does planning to mixed feed undermine breastfeeding?

Continued breastfeeding is important for infants' health, but it is unclear whether mixed feeding increases the risk of breastfeeding cessation. We aimed to explore associations of mixed feeding and lactation problems with early cessation of breastfeeding. We analysed data from mothers who completed the Scottish National Maternal and Infant Feeding Survey and had previously breastfed their infants. At age 8-12 weeks, mothers (N = 1974) reported their feeding history and intentions, lactation problems and reasons for giving formula milk. The main outcome measure was cessation of breastfeeding before 6-8 weeks and time to cessation. By 6 weeks, 65% had mixed fed at some point, 32% had ceased breastfeeding, 22% were currently mixed feeding and 46% were exclusively breastfeeding. Lactation problems before 2 weeks were common (65%), and strongly associated with stopping breastfeeding (relative risk [RR]: 3.23, 95% confidence interval [CI]: 2.0-5.3) and with mixed feeding (RR: 3.14, 95% CI: 2.5-4.0). However, even after adjustment for breastfeeding problems mothers who planned to mixed feed (RR: 3.39, 95% CI: 2.4-4.9) and those who introduced formula for practicalities (RR: 3.21, 95% CI: 2.3-4.4) were more likely to stop breastfeeding. These variables also predicted later lactation insufficiency (planned mixed feeding RR: 1.39, 95% CI: 1.0-2.0; formula for practicalities RR: 1.76, 95% CI: 1.3-2.3). Mothers who received specialist lactation support were less likely to cease breastfeeding (RR: 0.63, 95% CI: 0.5-0.9) but nonspecialist input was unrelated to risk of cessation (RR: 1.06, 95% CI: 0.2-4.9). In conclusion, choosing to mix feed an infant is strongly associated with stopping breastfeeding, even in the absence of lactation problems.

Prevalence and predictors of breastfeeding in the MINA-Brazil cohort

OBJECTIVE

To describe the prevalence and factors associated with exclusive (EBF) and continued breastfeeding (BF) practices among Amazonian children.

METHODS

Data from 1,143 mother-child pairs recorded on the Maternal and Child Health and Nutrition in Acre (MINA-Brazil) birth cohort were used. Information on EBF and BF was collected after childbirth (July 2015-June 2016) and during the follow-up visits at 1 and 6 months postpartum, 1, 2, and 5 years of age. For longitudinal analysis, the outcomes were EBF and BF duration. Probability of breastfeeding practices were estimated by Kaplan-Meier survival analysis. Associations between baseline predictors variables and outcomes among children born at term were assessed by extended Cox regression models.

RESULTS

EBF frequencies (95% confidence interval [95%CI]) at 3 and 6 months of age were 33% (95%CI: 30.2-36.0) and 10.8% (95%CI: 8.9-12.9), respectively. Adjusted hazard ratio for predictors of early EBF cessation were: being a first-time mother = 1.47 (95%CI: 1.19-1.80), feeding newborns with prelacteals = 1.70 (95%CI: 1.23-2.36), pacifier use in the first week of life = 1.79 (95%CI: 1.44-2.23) or diarrhea in the first two weeks of life = 1.70 (95%CI: 1.15-2.52). Continued BF frequency was 67.9% (95%CI: 64.9-70.8), 29.3% (95%CI: 26.4-32.4), and 1.7% (95%CI: 0.9-2.8) at 1, 2 and 5 years of age, respectively. Adjusted hazard ratio for predictors of early BF cessation were: male sex = 1.23 (95%CI: 1.01-1.49), pacifier use in the first week of life = 4.66 (95%CI: 2.99-7.26), and EBF less than 3 months = 2.76 (95%CI: 1.64-4.66).

CONCLUSIONS

EBF and continued BF duration among Amazonian children is considerably shorter than recommendations from the World Health Organization. Significant predictors of breastfeeding practices should be considered for evaluating local strategies to achieve optimal breastfeeding practices.

Critical research gaps in treating growth faltering in infants under 6 months: A systematic review and meta-analysis

In 2020, 149.2 million children worldwide under 5 years suffered from stunting, and 45.4 million experienced wasting. Many infants are born already stunted, while others are at high risk for growth faltering early after birth. Growth faltering is linked to transgenerational impacts of poverty and marginalization. Few interventions address growth faltering in infants under 6 months, despite a likely increasing prevalence due to the negative global economic impacts of the COVID-19 pandemic. Breastfeeding is a critical intervention to alleviate malnutrition and improve child health outcomes, but rarely receives adequate attention in growth faltering interventions. A systematic review and meta-analysis were undertaken to identify and evaluate interventions addressing growth faltering among infants under 6 months that employed supplemental milks. The review was carried out following guidelines from the USA National Academy of Medicine. A total of 10,405 references were identified, and after deduplication 7390 studies were screened for eligibility. Of these, 227 were assessed for full text eligibility and relevance. Two randomized controlled trials were ultimately included, which differed in inclusion criteria and methodology and had few shared outcomes. Both studies had small sample sizes, high attrition and high risk of bias. A Bangladeshi study (n = 153) found significantly higher rates of weight gain for F-100 and diluted F-100 (DF-100) compared with infant formula (IF), while a DRC trial (n = 146) did not find statistically significant differences in rate of weight gain for DF-100 compared with IF offered in the context of broader lactation and relactation support. The meta-analysis of rate of weight gain showed no statistical difference and some evidence of moderate heterogeneity. Few interventions address growth faltering among infants under 6 months. These studies have limited generalizability and have not comprehensively supported lactation. Greater investment is necessary to accelerate research that addresses growth faltering following a new research framework that calls for comprehensive lactation support.

In-Hospital Formula Feeding Hindered Exclusive Breastfeeding: Breastfeeding Self-Efficacy as a Mediating Factor

Breastfeeding self-efficacy (BSE), defined as a mother's confidence in her ability to breastfeed, has been confirmed to predict the uptake of exclusive breastfeeding (EBF). Early experiences during the birth hospital stay, especially in-hospital formula feeding (IHFF), can impact both EBF and maternal breastfeeding confidence. Therefore, our objective was to examine the association between IHFF and EBF outcomes and investigate whether this association is influenced by BSE. The study included 778 infants from a larger cohort study conducted in 2021, with a one-year follow-up in rural areas of Sichuan Province, China. We used a causal mediation analysis to estimate the total effect (TE), natural direct (NDE), and nature indirect effects (NIE) using the paramed command in Stata. Causal mediation analyses revealed that IHFF was negatively associated with EBF (TE odds ratio = 0.47; 95% CI, 0.29 to 0.76); 28% of this association was mediated by BSE. In the subgroup analysis, there were no significant differences in the effects between parity subgroups, as well as between infant delivery subgroups. Our study found that IHFF hindered later EBF and that BSE mediated this association. Limiting the occurrence of in-hospital formula feeding or improving maternal breastfeeding self-efficacy is likely to improve exclusive breastfeeding outcomes.

Trends and determinants of early initiation of breastfeeding in Indonesia: A multivariate decomposition analysis

BACKGROUND

Early initiation of breastfeeding (EIBF) is key to reducing neonatal morbidity and mortality, however, little is known about the determinants of the trends of EIBF prevalence in Indonesia. This study aims to assess the contributing factors to the changes in the prevalence of EIBF between 2007 and 2017.

METHODS

We analysed data from the 2007, 2012, and 2017 Indonesia Demographic and Health Surveys to estimate the trends in EIBF. A multivariate logistic decomposition model was fitted to examine variables associated with changes in the percentage of EIBF from 2007 to 2017. The contributing factors to changes in EIBF prevalence were categorized into either compositional or behavioural changes, with each of them divided into portions or percentages of contribution (pct) of the independent variables. The former refers to the changes in the distribution of samples, while the latter refers to the changes in the behavioural responses toward EIBF in both surveys. All analyses accounted for the complex study design and potential confounding factors.

RESULTS

An increase in the prevalence of EIBF from 49.9% to 56.5% was recorded between 2012 and 2017, with an overall increase of 16.9 percentage points from 2007 to 2017. At the aggregate level, the compositional differences did not significantly contribute to the changes in the percentage of EIBF, while 98.3pct (p < 0.001) was associated with changes in mothers' behavioural response towards EIBF. The composition changes in the geographical region of Sumatra, and caesarean delivery negatively contributed to the changes in EIBF prevalence with -0.6pct and -14.2pct, respectively. However, the compositional differences in those living in Kalimantan & Sulawesi, first-time mothers, and small-born infants positively contributed to the change. Behaviour changes in mothers with higher education (8.8pct), from higher income households (-17.5pct), and those residing in Sumatra (-8.2pct) and Kalimantan & Sulawesi (-10.2pct) significantly contributed to the upward trend in EIBF prevalence.

CONCLUSIONS

Almost half of the newborns experienced delayed breastfeeding initiation despite the improvement in the prevalence of EIBF. Therefore, further research and interventions on behaviour change in mother's attitudes towards EIBF, especially among those undergoing caesarean delivery, living in Kalimantan or Sulawesi, and from wealthier households, are recommended to close this gap.

Non-medical formula use in newborn infants still common at two Swedish hospitals after a breastfeeding support program

AIM

To evaluate the effectiveness of a breastfeeding support programme on reducing infant formula use and to investigate indications for formula in newborn infants in Sweden.

METHODS

A quasi-experimental study design was carried out. It included 255 mother-infant pairs in a control group, who received standard care and 254 pairs in an intervention group, who took part in a breastfeeding support programme. Data were collected by reviewing patient records from two regional hospitals in Uppsala and Gotland and recruitment took place between 2017 and 2019.

RESULTS

Median age of mothers were 31 years (range 20-49) and median gestational age of infants were 39 + 6 weeks/days (range 37 + 0 to 42 + 4). The intervention did not reduce infant formula use. In total, 87/507 (17%) of the infants received formula. Among children receiving formula 30/87 (34%) had a medical indication, whereas 57/87 (66%) had no medical indication. Main reasons for medically indicated formula use were hypoglycaemia, 13/30 (43%), and weight loss, 13/30 (43%). Main reasons for non-medical use were mothers'/parents' wishes, 25/57 (44%) and infants' dissatisfaction, 11/57 (19%).

CONCLUSION

Continued efforts are needed to develop effective breastfeeding interventions with increased focus on infant formula reduction.

'She was hungry'-Croatian mothers' reasons for supplementing their healthy, term babies with formula during the birth hospitalisation

AIM

To explore why Croatian mothers request formula for their healthy, term newborn infants during the postnatal hospital stay.

METHODS

Four focus groups discussions were conducted with a total of 25 women who gave birth to healthy newborn infants, between May and June 2021 in Split, Croatia. A homogenous, non-random purposive sampling technique was used. The semi-structured interview schedule contained 15 open-ended questions. Reflexive thematic analysis was applied.

RESULTS

Three themes were generated. The first theme fear of hunger referred to the mothers' fears arising from difficulties in interpreting newborn infant behaviour and finding solace in giving formula. The second theme too little support-too late reflected participants' unrealised expectations of hospital staff. The third theme non-supportive communication addressed mother's need for empathy during the postpartum hospital stay.

CONCLUSION

Croatian mothers want to breastfeed, but often feel unsupported in doing so in the maternity hospital setting. Antenatal education of expectant mothers and training of maternity staff in breastfeeding counselling, with a strong emphasis on communication skills, as well as employment of International Board Certified Lactation Consultants and/or volunteer breastfeeding counsellors, were perceived by participants as a way to decrease mothers' requests for formula for their healthy, newborn infants.

Factors Associated With Initiating Breastfeeding and Continuing it for At Least 4 Months in Consuelo, a Rural Town in the Dominican Republic

Objective. We assessed the proportion of and factors associated with mothers initiating and continuing breastfeeding (BF) for ≥4 months in a rural town of the Dominican Republic. Methods. A survey was administered to 190 mothers of children cared for at a free clinic in Consuelo. Modified bivariate and multivariable Poisson regressions were utilized in data analysis. Results. BF was initiated in 89.5% of cases and continued ≥4 months in 81.7% of cases. Maternal education beyond secondary school [adjusted RR = 1.13, 95% CI: (1.04-1.24), 0.010], and visiting both public and private antenatal clinics [adjusted RR = 1.25; 95% CI: (1.10-1.37), 0.010] were associated with BF initiation. Public and private antenatal clinic attendance [adjusted RR = 1.01, 95% CI: (0.45-2.23), 0.020], Cesarean section [adjusted RR = 0.81, 95% CI: (0.68-0.98), 0.026], number of biological children [adjusted RR = 0.95, 95% CI: (0.90-1.00), 0.032] and maternal employment [adjusted RR = 0.89, 95% CI: (0.79-0.99), 0.048] were associated with BF continuation. Conclusions. These results provide valuable insights for targeting specific populations in future breastfeeding education interventions.

Global lessons for strengthening breastfeeding as a key pillar of food security

Breastfeeding is identified as a central pillar of food security by the World Health Organization, however globally significant challenges remain in achieving breastfeeding targets for early initiation, exclusive breastfeeding for 6 months, and continued breastfeeding for 2 years and beyond. Inadequate support in health systems, poor maternity protections and workplace policies, and insufficient regulation of commercial milk formulas, among other barriers, continue to undermine this key pillar across nations. This paper highlights the central importance of breastfeeding for food security across diverse global settings by examining three case studies: Honduras, Pakistan and the USA. The cases highlight the complex layering and intersections of key challenges that threaten breastfeeding in the era of pandemics, the climate crisis, conflict and global inequality. Lessons drawn from these case studies, combined with additional insights, reinforce the importance of multisectorial collaboration to scale up investment in creating equitable, enabling environments for breastfeeding. These structural and systems approaches can successfully strengthen the breastfeeding ecosystem to ensure greater first food system resilience in the face of global crises, which compound maternal and infant vulnerabilities. Additionally, the cases add urgency for greater attention to prioritizing breastfeeding and incorporating IYCF-E protocols into disaster preparedness and management into the policy agenda, as well as ensuring that first food security is considered in energy policy. An integrated approach to policy change is necessary to recognize and strengthen breastfeeding as a pivotal part of ensuring food security across the globe.

Prelacteal feeding and its relationship with exclusive breastfeeding and formula consumption among infants in low- and middle-income countries

Background

Early feeding practices are important determinants of optimal feeding patterns later in life. We aimed to investigate if giving any fluids or foods other than breast milk during the first three days after birth (prelacteal feeds) affects exclusive breastfeeding and consumption of formula among children under six months of age in low and middle-income countries (LMICs).

Methods

We conducted a retrospective cohort study using data from 85 nationally representative Demographic Health Surveys (DHS) and Multiple Indicator Cluster Surveys (MICS) in LMICs (2010-2019). We considered three exposures: any prelacteal feeding (PLF), milk-based only prelacteal feeding (MLK), and water-based only prelacteal feeding (WTR), according to the DHS/MICS definition. The outcomes were exclusive breastfeeding, based on the World Health Organization definition, and consumption of formula among infants under six months of age. We used Poisson models adjusting for sociodemographic indicators, antenatal care, birth assistance, and early initiation of breastfeeding to estimate the effects of the exposures on the outcomes. Findings were grouped by each country, as well as by regions of the world and national income classification.

Results

We included data from 91 282 children. PLF, MLK, and WTR had a prevalence of 33.9% (95% confidence interval (CI) = 33.6-34.2), 22.2% (95% CI = 21.9-22.4), and 9.4% (95% CI = 9.2-9.6), respectively. Exclusive breastfeeding and consumption of formula had a prevalence of 35.2% (95% CI = 34.9-35.5) and 27.7% (95% CI = 27.4-28.0), respectively. In the crude analysis, children who were given PLF were 40% less likely to be exclusively breastfed (prevalence ratio (PR) = 0.60; 95% CI = 0.56-0.64) and nearly twice more likely to receive formula (PR = 1.89; 95% CI = 1.72-2.08); the direction of the associations was the same across income groups and regions of the world. In the adjusted analysis, the observed crude effects were only slightly reduced (exclusive breastfeeding - PR = 0.62; 95% CI = 0.59-0.66, consumption of formula - PR = 1.72; 95% CI = 1.59-1.85). MLK showed a stronger impact on the outcomes than PLF, especially for formula consumption (adjusted PR = 1.81; 95% CI = 1.67-1.97) and in low-income countries. WTR was only negatively associated with exclusive breastfeeding (adjusted PR = 0.69; 95% CI = 0.63-0.75), but not with formula consumption (adjusted PR = 1.09; 95% CI = 0.99-1.20).

Conclusions

Feeding babies prelacteal foods shortens exclusive breastfeeding duration and increases the likelihood of formula consumption in children under six months of age in LMICs. Pro-breastfeeding interventions must be prioritized during antenatal care and throughout the stay in the maternity facility to properly protect, support, and promote exclusive breastfeeding since birth.

Early initiation of breastfeeding is inversely associated with public and private c-sections in 73 lower- and middle-income countries

Although studies in low- and middle-income countries (LMICs) have examined the effects of c-sections on early initiation of breastfeeding (EIBF), the role of the place of birth has not yet been investigated. Therefore, we tested the association between EIBF and the type of delivery by place of birth. Data from 73 nationally representative surveys carried out in LMICs between 2010 and 2019 comprised 408,013 women aged 15 to 49 years. Type of delivery by place of birth was coded in four categories: home vaginal delivery, institutional vaginal delivery, c-section in public, and c-section in private health facilities. We calculated the weighted mean prevalence of place of birth and EIBF by World Bank country income groups. Adjusted Poisson regression (PR) was fitted taking institutional vaginal delivery as a reference. The overall prevalence of EIBF was significantly lower among c-section deliveries in public (PR = 38%; 95% CI 0.618-0.628) and private facilities (PR = 45%; 95% CI 0.54-0.566) compared to institutional vaginal deliveries. EIBF in c-sections in public facilities was slightly higher in lower-middle (PR = 0.650, 95% CI 0.635-0.665) compared to low (PR = 0.544, 95% CI 0.521-0.567) and upper-middle income countries (PR = 0.612, 95% CI 0.599-0.626). EIBF was inversely associated with c-section deliveries compared to institutional vaginal deliveries, especially in private facilities compared to public ones.

Exclusive breastfeeding: Measurement to match the global recommendation

The World Health Organization (WHO) and United Nations Children's Fund (UNICEF) recommend exclusive breastfeeding (EBF) for the first 6 months of life. To estimate the proportion of infants that are exclusively breastfed, many agencies use the point prevalence of EBF among infants currently 0–5.9 months of age, as recommended by WHO and UNICEF. This measure tends to overestimate the percentage of infants that are exclusively breastfed for the entire recommended period. We compared five methods of measuring EBF, using data from three large‐scale cross‐sectional surveys. The five methods were: the WHO/UNICEF recommended method (EBF‐24H); an estimate of EBF for 6 months, using the 24‐h recall among infants 4–5.9 and 6–7.9 months (EBF‐24H‐Pul); a since birth recall (EBF‐SB); an estimate of EBF for 6 months, using the since‐birth recall among infants 4–5.9 and 6–7.9 months (EBF‐SB‐Pul); a retrospective measure of EBF collected from infants 6–11.9 months, based on the age of introduction of liquids and foods (EBF‐AI). EBF‐24H‐Pul and EBF‐SB‐Pul produced lower estimates of EBF than other measures, while also aligning better with the WHO recommendation, but may be difficult to estimate from multipurpose surveys due to sample size limitations. The EBF‐AI method produced estimates between these, aligns well with the WHO recommendation and can be easily collected in large‐scale household surveys. Additional validation of the EBF‐24‐Pul, EBF‐SB‐Pul, and EBF‐AI methods is recommended to understand how accurately they measure EBF for the recommended 6‐month period.

Exclusive breastfeeding infants for the first 6 months of life is recommended by the World Health Organization and UNICEF for the benefits it provides to both the infant and the mother.

The measure currently recommended for global monitoring of exclusive breastfeeding is the prevalence of exclusive breastfeeding among infants less than 6 months, based on a 24‐h recall.

Though this measure is easy to collect in large‐scale household surveys, it is often misinterpreted as the percent of infants who are fed according to the recommendation, resulting in an overestimation.

Other survey‐derived measures of exclusive breastfeeding are available, for example, such as calculating the midpoint prevalence among infants 4–5.9 and 6–7.9 months, a method developed by Pullum and a since birth recall among infants aged 6–11.9 months of age.

These are similarly feasible to collect in household surveys and align better with the practice of exclusive breastfeeding for 6 months as recommended by the WHO.