Patients who want to lose weight by dieting can cause certain hazards to the body. The following are the hazards of starvation and thinness: 1, the body is not enough high-quality protein. When dieting to lose weight, the body does not have enough protein to replenish, the body’s quality protein is not sufficient, easily causing problems with bodily functions, resulting in dull skin, no luster and other problems, serious cases will also cause endocrine disorders. 2, vitamin deficiency. Not consuming enough food, dieting to lose weight leads to vitamin deficiency, causing gastrointestinal and urinary tract infections, and even reproductive system problems. 3, the basal metabolic rate decreases. Due to long-term dieting, weight loss through hunger, the body’s nutrition will slowly decline, resulting in a lower basal metabolic rate, resulting in health problems.