Not all people gain weight when their period is approaching, but some do. Patients suffering from PMS may experience headache, backache, breast tenderness, abdominal distension, constipation, limb edema, weight gain, loss of motor coordination, anxiety, depression, emotional instability, fatigue, low work efficiency, and memory loss prior to menstruation, and these symptoms will disappear naturally after menstruation. The etiology of this disease is not particularly clear for the time being and may be related to ovarian hormonal imbalance and neurohumoral abnormalities and psychosocial factors. If the level of estrogen is relatively too high before menstruation, resulting in sodium retention, leading to weight gain, you can go to a regular hospital and follow the doctor’s instructions for treatment.