The influence of maternal life stressors on breastfeeding outcomes: a US population-based study

Academy of Breastfeeding Medicine Clinical Protocol #19: Breastfeeding Promotion in the Prenatal Period (Revised 2024)

Background: The Academy of Breastfeeding Medicine revised the 2015 version of this clinical protocol to review the evidence and provide recommendations related to breastfeeding promotion in the prenatal period. Key Information: Promoting and normalizing breastfeeding in the prenatal period can improve breastfeeding outcomes including initiation and duration of breastfeeding. Ideally, prenatal interventions should be a part of a comprehensive longitudinal breastfeeding support program. Recommendations: Clinicians or other health workers should discuss breastfeeding at each prenatal visit. Counseling topics should include the health benefits of breastfeeding versus not breastfeeding, the basics of breastfeeding (e.g., physiology, positioning), what to expect of hospital-based and immediate postpartum breastfeeding support (i.e., Baby-Friendly Ten Steps), and the risks of unnecessary supplementation. Medical, anatomical, and other risk factors for breastfeeding challenges should be identified, and targeted anticipatory guidance should be given. Prenatal counseling should include distribution of structured breastfeeding education at low literacy levels and in the parent's preferred language. Counseling should be culturally sensitive and patient-centered, including family members when appropriate. Prenatal support may integrate various health workers (e.g., medical doctors, midwives, community health workers, lactation consultants, among others) and include various modalities including telecommunication. Enhancing breastfeeding education for prenatal care providers is also imperative. Additional themes related to implementation of recommendations for specific populations are also reviewed.

The contributions of parental lactation on offspring development: It's not udder nonsense!

The Developmental Origins of Health and Disease (DOHaD) hypothesis describes how maternal stress exposures experienced during critical periods of perinatal life are linked to altered developmental trajectories in offspring. Perinatal stress also induces changes in lactogenesis, milk volume, maternal care, and the nutritive and non-nutritive components of milk, affecting short and long-term developmental outcomes in offspring. For instance, selective early life stressors shape the contents of milk, including macro/micronutrients, immune components, microbiota, enzymes, hormones, milk-derived extracellular vesicles, and milk microRNAs. In this review, we highlight the contributions of parental lactation to offspring development by examining changes in the composition of breast milk in response to three well-characterized maternal stressors: nutritive stress, immune stress, and psychological stress. We discuss recent findings in human, animal, and in vitro models, their clinical relevance, study limitations, and potential therapeutic significance to improving human health and infant survival. We also discuss the benefits of enrichment methods and support tools that can be used to improve milk quality and volume as well as related developmental outcomes in offspring. Lastly, we use evidence-based primary literature to convey that even though select maternal stressors may modulate lactation biology (by influencing milk composition) depending on the severity and length of exposure, exclusive and/or prolonged milk feeding may attenuate the negative in utero effects of early life stressors and promote healthy developmental trajectories. Overall, scientific evidence supports lactation to be protective against nutritive and immune stressors, but the benefits of lactation in response to psychological stressors need further investigation.

Effect of positive emotion intervention during late pregnancy on improving colostrum secretion: a randomised control trial protocol

INTRODUCTION

Though evidence has revealed the beneficial effects of cognitive improvement interventions on breastfeeding, the effect of psychological interventions has rarely been studied. This study aims to test whether promoting a positive emotion intervention, 'Three Good Things' intervention, during the last trimester of pregnancy can enhance early colostrum secretion and breastfeeding behaviours by modulating the hormones associated with lactation (prolactin and insulin-like growth factor I). We will attempt to promote exclusive breastfeeding by using physiological behavioural measures.

METHODS AND ANALYSIS

This study is designed as a randomised controlled trial conducted in the Women's Hospital School of Medicine at Zhejiang University and the Wuyi First People's Hospital. The participants will be randomly divided into two groups using stratified random grouping: the intervention group will receive 'Three Good Things' intervention, while the control group will write about three things that come to mind first. These interventions will be continued from enrolment until the day of delivery. Maternal blood hormone levels will be tested approaching delivery and the following day after birth. Behavioural information about breastfeeding will be collected 1 week afterwards.

ETHICS AND DISSEMINATION

The study has been approved by the Ethics Committees of the Women's Hospital School of Medicine at Zhejiang University and the Wuyi First People's Hospital. Results will be disseminated through peer-reviewed journals or international academic conferences.

TRIAL REGISTRATION NUMBER

ChiCTR2000038849.

Cortisol, Maternal Stress, and Breastfeeding Rate at Hospital Discharge: A Systematic Review

Introduction: Breastfeeding is considered the best way to provide essential and necessary nutrients to the newborn, intervening in its growth and development. However, early abandonment of this method is quite common, due to various factors such as stress. Objectives: To determine whether the level of postpartum cortisol can serve as an indicator of maternal stress and whether there is a relationship between the level of cortisol and the rate of exclusive breastfeeding (EBF) at hospital discharge. Methodology: Systematic review of the literature under the PRISMA guidelines. PubMed, Web of Science, CINAHL, and Scopus databases were used. Original articles published from 2017 to 2022 in English, French, Portuguese, and Spanish were included. All study designs were eligible. Of the 3,712 records initially identified, 15 studies were included in this review. Results: Elevated cortisol levels, due to immediate postpartum stressors, have direct effects on the performance of the essential hormones in breast milk production. The EBF rates are negatively influenced by perceived maternal stress. Conclusion: Cortisol levels may be a good indicator of the level of stress to which the mother is subjected during the immediate postpartum period.

Psychosocial stress and cortisol stress reactivity predict breast milk composition

We studied a sample of 146 Polish, exclusively breastfeeding mothers and their healthy born on time infants to explore the effect of perinatal psychosocial stress on breast milk composition. Maternal perinatal stress was assessed using Recent Life Changes Questionnaire summarizing stressful events from the previous six months. Stress reactivity was determined by administering the cold pressor test and measuring cortisol in saliva samples taken during the test. Breast milk sample was taken to measure energy, protein, fat, lactose, and fatty acid content. Analyses revealed that stress reactivity was positively associated with milk fat and long-chain unsaturated fatty acids and negatively associated with milk lactose. Perinatal psychosocial stress negatively affected energy density, fat as well as medium-chain and long-chain saturated fatty acids in milk. These results, together with previous studies, advocate monitoring maternal psychological status during the peripartum to promote breastfeeding and healthy infant nutrition.

Navigating a Minefield: Meta-Synthesis of Teen Mothers' Breastfeeding Experience

Teen mothers have lower rates of breastfeeding duration and exclusivity than older mothers. A growing body of qualitative research on teen mothers' experience helps to explain these disparities. Following a systematic search to identify relevant research, we synthesized the findings from 22 primary studies to conclude that teen mothers navigate a minefield that undermines their intention to breastfeed and their breastfeeding confidence and skill. This metaphorical minefield reflects competing norms for infant feeding and good mothering, as evident in mixed support from teens' social networks; fragmented and stigmatizing healthcare; and spaces that are inhospitable to teen mothers and breastfeeding mothers in general.In recognition of this minefield, we urge clinicians to: respect teen mothers' infant feeding decisions; develop collaborative relationships based on the principles of patient-centered and strength-based care; challenge stigmatizing healthcare practices; welcome teen mothers and their significant others to clinical settings; and press health systems to fully implement probreastfeeding policies. We also recommend further study to extend our knowledge about teen mothers' breastfeeding experiences.

[Health effects of breastfeeding on the mother]

We evaluated the effect of breastfeeding on maternal health outcomes. We distinguished between long-term effects (breast carcinoma, ovarian carcinoma, endometrial carcinoma, osteoporosis, and type 2 diabetes mellitus) and short-term effects (lactational amenorrhea, postpartum depression, and postpartum weight change).Predominant breastfeeding increases the duration of lactational amenorrhea, which has a short-term effect on the reduction of fertility. There are many studies that show that breastfeeding is protective against breast, ovarian carcinoma, and endometrial carcinoma. The effects depend on the duration of breastfeeding. There is evidence that breastfeeding reduces the risk of type 2 diabetes and metabolic syndrome and cardiac diseases. However, an association between breastfeeding and bone mineral density or maternal depression or postpartum weight change was not clearly evident.