Understanding and Addressing Being Underweight: A Doctor's Perspective

Question
Dear Doctor

I am 23 years old boy. My height is 175 cm =5.7 ft
But my weight is low about 54 kg =118 pound

I am very slim, I try to eat more but it is good for nothing.

Hope you could help me

Your sincerely

Luke

Answer
Luke,

I assume that your question is how to gain weight.  A combination of high calories and weight training may help, but for many slim and young people, the ability to gain weight (muscle) is limited, and probably genetically driven.  However, I think that low fat, high protein and carb meals, coupled with weight lifting and training will give you the best results.