Is milk bad for adults?

Not necessarily: If you can drink milk without problems, you can drink it. You may want to select low-/non-fat milk. If you have lactose intolerance like many of us, you may want to avoid it or drink either lactose- free or soy milk. There are varying degrees of lactose intolerance. As we get older we make less and less lactase, an enzyme that breaks down lactose in milk. Many adults get gas and bloating with mil.

Milk healthy?: Milk from a cow is a good source of high-quality protein, and is fairly healthy (assuming you are tolerant of lactose) as long as you choose skim or 1% milk, both of which cut back the fat content and total calories significantly.