Starvation thin generally 1 week will see the effect, but the body has a lot of harmful effects, is not recommended. Hungry thin refers to weight loss through dieting, due to the human body 1 week is a body metabolic cycle, generally 1 week will see a significant effect, but this situation is harmful to the body, it is easy to lead to gastric diseases, due to the stomach fasting time is too long, it will lead to excessive secretion of gastric acid, and gastric acid will be directly on the gastric mucosa caused by the invasion, which caused gastritis, gastric ulcers and other diseases. And often in the state of hunger, but also easily will lead to malnutrition, the body lost too much nutrients, resulting in yellow muscle thin, body resistance decline. If you want to become thin, you can control your diet with appropriate exercise, but not excessive dieting.