Weight gain and obesity are the initial symptoms of eating a lot more than what is required by the body. People who suddenly put on weight may lose self confidence and self esteem and try to deprive themselves of the food items they love, which in turn will increase the urge to eat more.
If you start eating a lot of high calorie, high fat food, it may lead to other health disorders and ailments. Eating too much carbohydrate-based food causes a rapid rise in blood sugar, which leads to secretion of insulin by the digestive system. Insulin then stores the carbohydrates as glycogen in the muscles and liver but once these storage sites are full, the balance will be converted into body fat. Controlling the type of carbohydrate you consume is as important as controlling the portion size.