My name is tristan and all my life I have been under weight! I am now 21 yrs old and weigh 102 lbs is there any way for me to gain 20lbs in a healthy way?

Yes there is! You can start eating health foods with just a little bit of fating vegetable grease or olive oil on your foods.

Has your dr recommended that you gain weight? Some people just naturally have a very fast metabolism. I have this one friend who eats and eats and eats (so much junk food too!), rarely exercises and yet she can still fit into children's sized clothes.