What is your sisters height weight and age. Due to thyroid weight increase bit with proper lifestyle and diet it can be controlled. I cnahelp with 4-5 KGS weight loss in month.

Hello ,weight gain us commonly seen in Hypothyroidism ... She has to get her thyroid profile done. Regular medicines Intake to maintain normal harmonal level.Tell her to have more of fruits and vegetables, drink lot of water , avoid junk ,oily food items ,have food like chapatis, avoid curd ,ghee, ice creams , Exercise daily in morning , sleep well(7-8hrs) ,avoid worries. aerobic exercises and yoga works better