I also learned the truth about cow dairy milk that it causes acid in our body, which our body uses more calcium than in the milk to nullify the acid, so drinking milk causes weaker bones than stronger bones that is used to market milk to the general public. Pasteurizing milk kills the natural enzyme lactase present in the milk required to digest lactose, which is why lactose intolerance is popular. The cows mutated years ago to increase the production of casein A1, which we cannot digest but only casein A2.