Do you often get a bellyache when you eat or drink foods containing milk? I'm sorry to say, but you may be lactose intolerant.

Lactose is the milk sugar in dairy products. Lactase is the enzyme in your body that breaks down the lactose.

Some people's bodies just don't produce enough of the enzyme to digest the amount of lactose they eat. So when they eat it, they can feel uncomfortable, gassy, bloated or get severe cramps, pains, or diarrhea.

If you think this info might apply to you, there's a simple breath test you can take at your doctor's office. Basically they give you a lactose-loaded beverage and then they monitor the amount of hydrogen in your breath. Don't bother getting the test if you already know how milk affects you.

What's the cure? Sorry folks - there is none. You can either avoid foods containing milk or take Lactaid pills. You can by them over-the counter and they contain the lactase enzyme. Just take a pill with your first bite of dairy-filled food - and you're good to go.

Fit's Tips: Costco sells Lactaid Fast Act Caplets, so if you use them everyday, you might as well buy them in bulk. (90 for $15.29)