I am 15 years old, and I weigh only 105 pounds. I have been to Pharmacies and Drug stores to try to find some type of vitamins to help me gain weight, but I am yet to find any. I've tried eating a lot with no exercise, but I can't gain weight because of my high Metabolism. Not being able to gain weight also affects my ability to build muscle. Any suggestions? Thank you very much in advance!

Go to GMC. Get Whey protien or a protien powder called Weight/ Muscle Gainer. Also get you hands on NOS. Continue to eat alot. Work out. The Protien will help you gain muscle. But as you explained in your post, it may be extremely hard for you to get/keep the muscle with your metabolism. You're body might not be made to be musclular but dont give up, I could be wrong.

You just need to increase the calories that you take in, a weight gainer ( like the ones on here http://bodybuilding.com/store/gainers.htm ) could help you do this.

How tall are you? Because you might not be that underweight.

You could have a thyroid problem if you are not gaining weight, talk to your doctor about it.

steroids wohooo

well it depends how tall you are....i'm 105 too but i haven't really been trying to put on wait like you are...

increase overall weight = more calories eaten than calories burned

increase muscle mass = take in at least 1 to 2 grams of protein per body weight per day...so 105-200 grams of protein since you're 105 lbs.

do you lift weights ? are you trying to gain just muscle ?

damn your lucky, i wouldnt mind having your "problem"

I would go to your doctor or a nutrionist to get some informed advice on the best and most healthy way to gain weight. You definately don't want to stop exercising because other than keeping people trim, exercise has other functions which are just as important such as looking after your heart, fitness, and your bones- think osteoperosis (sorry, spelling). Also eating plain junk is not good because it could have other affects such a wreaking havoc on your skin or making you feel sluggish- if you don't feed your body the right fuels with all the good vitamins and minerals you need.

I would say the answer lies somewhere within eating more carbohydrates but this really is not an informed answer- I'm sure it is more complex than anyone on here, or even info on the net can tell you. So once again I'd advise talking with a professional about the best way to go about this :)

.... ensure... best thing for GAINING weight... not losing it...believe me, i thought it was for losing weight, and i gained 10 lbs after like, two packs... and i have a high metabolism... you can get it at local grocerie stoes, and it comes in diff flavors... but, if that doesnt work, try alot of peanut butter. it has protein... yum, proteins... *decides to dream about ch- erm, crush...*

go to your doctor they'll check you out for stuff like your bloody pressure and eating habbits etc

if they think its a problem then they'll help you

good luck :)

yeah i'm liek you.. i have very fast metabolism.. i've always been under weight.. btu wait til you start to grow up at little.. maybe join sports.. its nto a serious condition many people are liek you