Lots of people feel that milk is not for adults Since, in the first place, it is the food necessary for a child. And here is the logical reason for this position👇🏻 Cow's milk contains large amounts of insulin-like growth factor-1, or IGF-1 (milk is specifically made that way so that calves grow faster). Human milk contains much lower concentrations of IGF-1 because nature designed us to grow really slowly. Fast growth creates numerous problems. Also, many people have lactose intolerance. However, there is a contrary argument. That over these many centuries of animal agriculture, our bodies have already adapted to milk and it has no negative effects🤔