Seminars in perinatology
June 20, 2026 · via Europe PMC
Maternal diet and nutritional status during pregnancy and lactation: a review of implications on milk composition and lactation outcomes.
Ayande R, Sen S, Robinson DT.
AI summary — for doctors, generated from the abstract only
Associations between maternal diet or nutritional status and human milk composition remain inconsistent, largely because dietary assessment, milk sampling and nutritional definitions are not standardised across studies.
What was studied
A narrative review synthesising evidence on how maternal dietary intake affects human milk macronutrients, fatty acids, human milk oligosaccharides and other bioactives; how maternal nutritional status influences milk composition; and how diet and nutritional status relate to lactation initiation, duration and milk production.
Key findings
- Maternal nutritional status factors examined included BMI, gestational weight gain, gestational diabetes, food insecurity and biochemical nutrient markers
- The strength and consistency of associations between maternal diet and milk composition remain incompletely understood
- Methodological heterogeneity in dietary assessment, milk sampling protocols and definitions of nutritional status limits comparability across studies
- Standardised approaches and mechanistic research are called for to clarify causal pathways
Clinical relevance
This supports caution about specific dietary advice aimed at altering milk composition, since the evidence base is inconsistent and methodologically fragmented; it does not identify any validated modifiable dietary target.
Who should care
Limitations
Narrative review with no systematic search or quantitative synthesis, reviewing a literature the authors themselves describe as too methodologically heterogeneous to compare.
There is no solid basis yet for telling a breastfeeding mother that a particular diet will change her milk in a clinically meaningful way.
This is an AI-generated summary of the published abstract, not a clinical recommendation. It may not reflect the full text or subsequent updates — verify against the original source before acting on it.
Abstract
Maternal diet and nutritional status during lactation have important implications for human milk composition and lactation outcomes, yet the strength and consistency of these associations remain incompletely understood. This narrative review synthesizes current evidence on (1) the role of maternal dietary intake on human milk macronutrients, fatty acids, human milk oligosaccharides (HMOs), and other bioactive compounds; (2) the influence of maternal nutritional status, including body mass index (BMI), gestational weight gain, gestational diabetes, food insecurity, and biochemical nutrient markers, on milk composition; and (3) the relationship between maternal diet and nutritional status and lactation outcomes, including initiation, duration, and milk production. Methodological heterogeneity in dietary assessment, milk sampling protocols, and definitions of nutritional status limits comparability across studies. Standardized approaches and mechanistic research are needed to clarify causal pathways and identify modifiable targets to optimize milk composition and support successful lactation.
DOI
10.1016/j.semperi.2026.152273
PMID
42323262
Research metadata (titles, abstracts, authors, publication dates) is sourced from Europe PMC, which aggregates content from PubMed/MEDLINE, PubMed Central, and other providers under the U.S. National Library of Medicine (NLM/NCBI). NLM does not claim copyright on abstracts; the original journal publishers or authors may hold rights to the full articles. AI-generated summaries are derived only from the abstract, never the full text, and are always labeled as AI-generated.
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