I have the opposite problem of most people in this category. I am 5 9 and weigh only 120 lbs and I eat like a garbage disposal, drink weight gainer, and lift weights. I am 27 years old. Anyone have a clue what is wrong with this picture?

Gosh, I wish I had your problem! You apparently have one of those bodies that has a high metabolism rate and burn off more calories than you take in. Lifting weights burns off a lot of calories also. I know some men who are slim and muscular and they are perfectly healthy.

I would suggest you just be content with your body as you are still young. You may have the exact opposite problem when you get older and stop the weight lifting or exercising... i.e. every morsel of food goes to your belly and you can't lose weight to save your life.

Do you drink beer? I have a cousin who has this problem and his doctor told him to start drinking Guinness if you can believe it!

You must have a very high metabolism. Do you smoke, Drink or even work out allot?
What types of food are you eating?