I am 42kilos & my age is 33. what diet and supplement you suggest to increase my body? sir i m a pure vegetarian.

See Dr., then eat...: If one is truly underweight (based on height, family background, and body type), a Dr. can evaluate for a hormonal, digestive, or other disorder. If no medical cause is found, then one can add weight by eating more calories of nutritious foods, while also doing weight-training to increase muscle. Proteins and better fats: olive oil, peanuts, almonds, cashews, tofu, whole grain pasta, beans, etc...