Hi, Your ideal body weight is 45kg. Drinking half a liter milk is not a great idea to prevent yourself from osteoporosis. Having high protein diet indeed is a reason of your high uric acid levels. You can consider having 150 ml of milk/soya milk/ almond milk. Have other sources of calcium like milk products, leafy vegetables, fortified cereal and orange juice. Consulting a experienced dietitian can help you target your multiple problems. www.allaboutdiets.in

U need to gain10 kgs get test done for all your queries. Consult dietician. I can help with 4-5 KGS weight gain in month

35 kg is undoubtedly very less Pls let's us know your height too What are your eating habits. Pls do not jump to any conclusions on your self. First get a blood test done-renal test too What made you think that your kidneys can't process protein.... Pls consult a doctors and hire a personal dietician for yourself.