Will maturbating excess leads to loss of weight?

No: That's possible, but doesn't happen in reality. Weight loss occurs when more calories are burned up than are taken in. It is hard to exercise enough to burn up more calories than a person eats or drinks... Which is why losing weight by exercise alone usually doesn't work. A person has to eat fewer calories. The only way masturbation would lead to weight loss is if he or she stopped eating as much.