If you are really...: ....Fit, meaning healthy, in good physical condition with good muscle tone, with a good appetite and eating a healthy diet, then you do not need to gain weight. You, however, have a body mass index of 17.2. This is under weight. I'm concerned you're either not taking or can't absorb calories. Your doctor can rule out problems absorbing nutrients, hormone problems, or anorexia.
Answered 3/17/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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