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Low Milk Supply: New Science Reveals Biological Causes
13 May
Summary
- Previously, low milk supply was thought to affect 5% of mothers.
- New research suggests 10-20% of mothers may have insufficient milk.
- Discoveries point to lactocyte cell function as a key factor.
For many mothers, struggling with breastfeeding is a common early challenge. While it was long believed that true low milk supply affected only about 5% of women, recent research indicates this figure could be as high as 10-20%.
This new understanding points to biological factors influencing lactocyte cells within the mammary gland. These cells are responsible for producing breast milk, and their function or quantity can be affected by mechanisms beyond a mother's control.
Scientists are investigating various biological pathways. Some research suggests issues with the number of lactocytes, potentially linked to enzymes like WEE1. Other studies are exploring the placenta's role in signaling lactocyte development, with research in Uganda examining infection's impact.
Further exploration into lactocyte efficiency reveals that nutrient deficiencies, gene variants affecting nutrient transfer (like zinc), or chronic inflammation can also hinder milk production. Conditions such as obesity, diabetes, and autoimmune disorders are associated with inflammation that impacts mammary gland function.
These advancements offer significant promise. Developing diagnostic tests could lead to tailored advice and treatments, providing timely and definitive answers for mothers concerned about their milk supply. Innovations like probes measuring sodium levels in breast milk are already emerging.
