How To Tell If You're Lactose Intolerant Without Even Knowing It

When people think of lactose intolerance, they might imagine a poor soul who eats her cereal dry, or a guy who can only cast a longing glance at bowl of mac and cheese.

But according to scientists, there's a pretty good chance that you might have some degree of lactose intolerance. The National Institute of Health estimates a whopping 65% of humans have trouble stomaching dairy.