What you need to do is eliminate the common causes of increase in weight
such as overeating, lack of exercise
, diabetes, and hypothyroidism. Anemia, low proteins, adrenal gland problems, kidney and liver problems and Cushing Syndrome has to be eliminated. Late night snacking and poor sleep patterns too cause weight gain. Certain medications like antidepressants cause weight gain. Polycystic ovary too causes weight gain, hence has to be ruled out by an ultrasound of abdomen.