Does breast size correlate with milk production?

The relationship between breast size and milk production is more accurately related to the composition of glandular tissue versus fat tissue in the breast rather than the overall size. Glandular tissue contains the milk-producing cells, while fat tissue contributes primarily to the breast's volume and shape. A woman with larger breasts may have a higher proportion of fatty tissue and less glandular tissue, which does not necessarily equate to a higher milk production capacity.

Milk production is primarily governed by hormonal signals, the efficiency of the milk ejection reflex, and the frequency of effective breastfeeding or pumping which can stimulate supply, rather than breast size itself. Therefore, the notion that larger breasts produce more milk does not hold true; the critical factor is the amount of functional glandular tissue present.

By understanding that the composition of breast tissue is what influences milk production instead of the size, it becomes clear why this perspective is crucial for lactation consultants and mothers navigating breastfeeding challenges.