You need to take high protein diet. Ask me directly for customized diet plan for you.

Hi, You will definitely gain weight. See, there are many reason of not gaining weight. . Endrocrine problems like hypothyroidism . IBS . Dietary problem . Liver problem . Tuberculosis . Vitamin and minerals deficiencies . Gi problem And many more There is caused behind every Diseases. So better to consult any near by or if not possible contact me through the link below.

Well, there is no doubt about the fact that you are quite underweight but it's not clear if you were always underweight or have lost weight due to some reason. Anyways a proper diet is very important for you. A diet consisting of good carbs , high quality proteins, good fats n fruits n vegetables is required. If you do not have much appetite, have small meals frequently. Have food of your choice n also enjoy your food to be able to derive maximum nutrition out of it.