Is breast milk a good source of vitamin D?

Breast milk is generally considered to be low in vitamin D, which is why it is often stated that it is not a good source of this particular nutrient. The primary source of vitamin D for infants is through sunlight exposure and dietary supplements. While breast milk contains many vital nutrients and antibodies essential for infant growth and development, its vitamin D concentration is typically not sufficient to meet an infant's needs, especially if the mother has low vitamin D levels.

This is why health organizations often recommend that breastfeeding infants receive a vitamin D supplement, especially if they are exclusively breastfed. Factors such as geographical location, season, and individual variations in sun exposure can influence maternal vitamin D levels, but generally, the vitamin D content of breast milk does not reliably meet infants' requirements.