What are the general reason of under weight? If the person loss weight due to some disease tor infection in the childhood then at young age he or she will remain as it is?

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.