Whats wrong with milk from cows?
Debate about the potential health effects of A1 and A2 milk is ongoing.
Research suggests that A1 beta-casein causes adverse digestive symptoms in certain individuals.
But the evidence is still too weak for any solid conclusions to be made about the supposed links between A1 beta-casein and other conditions, such as type 1 diabetes and autism.
That said, A2 milk could be worth a try if you struggle to digest regular milk.
https://www.healthline.com/nutrition/a1-vs-a2-milk#bottom-line
https://nutritionfacts.org/topics/milk/
https://www.forksoverknives.com/7-ways-milk-and-dairy-products-are-making-you-sick/#gs.rgsfar