Excessive dieting may induce malnutrition, osteoporosis, gastritis and other diseases, seriously jeopardizing health. Excessive dieting is an unhealthy way to lose weight, and if taken for a long period of time, excessive dieting may lead to endocrine disorders and malnutrition, which is manifested in the reduction of subcutaneous fat, slow reaction, lack of concentration, loss of appetite, and loss of spirit. Excessive dieting may also induce osteoporosis, patients will experience weakness, back pain, fractures, generalized bone pain and other symptoms, when the disease is serious can lead to deformation of the thoracic spine, serious cases can compress the heart and lungs, circulatory and respiratory system function abnormalities. Some patients with excessive dieting may also induce gastric diseases and develop gastritis, which is manifested as epigastric pain, bloating, nausea, vomiting, loss of appetite, belching (hiccups), acid reflux, and so on. Therefore, it is not advisable to adopt excessive dieting to lose weight, and scientific and reasonable weight loss measures should be taken.