Welcome to HealthcareMagic
Weight gain is a slow and steady process. With the details which you have given, your Body Mass Index
( BMI) is 17.8 , which is on the lower side.Normal BMI is 18.5-24.9. Your diet should be high in protein which helps to build muscles and stamina. Take foods like pulses, whole legumes, soya based products like soy chucks, soy flavoured milk & soy milk, fruit milkshakes, lassi, paneer, flavoured yogurt and also a handful of nuts daily which will help you to put on weight in a healthy way.