Hi lybrate-user for increasing body weight, start eating more chapatis and rice with ghee or butter. Take creamed milk upto 400 ml daily. Eat fresh fruits and vegetables, take pulses and pulses products. You can eat homemade fried foods but avoid eating from the market. If you eat non-veg then eat 2 to 3 pcs. Of egg or fish thrice a week. Also take 4 to 6 pcs. Of almonds or cashew nuts or some raisins. Must take exercise daily as it helps in better absorption of food and also increases your satiety.