When is nipple discharge technically milk and if it isn't, is it still edible to a human?

Nipple discharge can occur for a variety of reasons and is usually not milk. Generally speaking, it is not recommended to consume your own nipple discharge, as it may contain bacteria that can lead to infection or other health issues.

However, technically speaking, nipple discharge becomes "milk" when the baby begins feeding and the mother is lactating. In this case, the nipple discharge contains hormones (prolactin) and colostrum which are beneficial to human health providing vital vitamins and minerals like Vitamin E, Vitamin A, iron & potassium as well as carbohydrates and proteins. Therefore in this case it could be argued that nipple discharge is edible in limited amounts if you are breastfeeding an infant - however further medical consultation should still be sought first before attempting such a thing!