** Thanks for contacting with your health problem and since most of the investigations are normal, thus other possibilities to look out for are: . check with gastroscopy and ultrasound of abdomen to exclude any malignancy . check with a Gastroenterologist to exclude celiac disease or malabsorption syndrome and/or with a Neurologist for under activity of pituitary causing reduced/decreased release of hormones .good food [rich in proteins] along with regular exercise,working hours and sleep should be included in prescription given by your attending physician.