This was the most frightening claim made a few years ago by a group of anti-milk physicians, including the late Dr. Benjamin Spock. They actually were against consuming all animal products. It's true that a 1992 Finnish study suggested that a protein in cow's milk might trigger an abnormal response in children genetically predisposed to developing insulin-dependent diabetes. But other studies have not found a connection between milk and childhood diabetes, except that breast-fed children seem to have a lower risk of the disease. No reputable authorities have proposed that children avoid milk and dairy products.
Milk boosts mucus production in the throat.
The scientific evidence says no. This myth may persist because of whole milk's thick consistency and because it may coat the mouth briefly. But a similar proportion of those who drank the soy milk reported these same sensations, so the dairy product wasn't to blame. If you don't like the way whole milk coats your tongue, or if it feels as if it makes mucus hard to swallow, this is yet another reason to switch to low-fat or nonfat milk. Dairy products actually increase the risk osteoporosis.