answer…
1. If you want to gain weight, first know whether you need to gain weight or not. Calculate your body mass index (BMI) to find out if you are underweight. BMI is measured based on height and weight.
2.Lack of proper nutrition is also the most common reason for being underweight. The amount of calories, protein, fat, carbohydrates and other important nutrients you consume has a direct effect on your body weight.
If the requirements are not met, the weight is reduced. In addition, the body burns calories and if you eat less food then your body weight will decrease which will definitely affect your metabolism.
4. If you are underweight, consult a doctor based on the symptoms. The doctor may recommend sugar tests, tests for gluten allergies, kidney function tests, hemoglobin tests, etc.
5. Physicians and dieticians suggest high intake of protein which helps in weight gain, intake of protein rich foods like chicken, fish, variety of fruits and vegetables, diet products, beans, pulses, potatoes, eggs etc.