Hello dear See, you will not gain until the cause of underweight is not treated. There are many reason of being underweight . Improper liver functions . Endocrine imbalance ( diabetes/ thyroid) . IBS . Tuberculosis . Improper dietary diet . Vitamins and minerals deficiency .Eating disorders . Improper sleep .Stress . Medication Many more HOW WE TREAT UNDERWEIGHT THRU DIET . Finding and Curing the cause of underweight . Treating the deficiency and symptoms cause due to underweight . Diet to get ideal weight Before prescribing any thing ,we need some health information like Vitals,health parameter, physical activity, family history, occupation, daily routine and any many.so ,if you want to contact ,please contact us thru the link below

You are 21kgs underweight There are many reasons for not gaining weight. Stop eating outside foods and packets foods junkfoods etc fatty food's. Take high protein diet and balanced nutrition and do exercises. Send me your recent medical reports.

According to your height your ideal weight should be 59 kgs. You need to take high protein diet. Ask me directly for customized diet plan for you.