Dehydration weight loss refers to the loss of part of the water in the body, and then achieve the purpose of weight loss, it is recommended to reduce weight scientifically under the guidance of a doctor. This is an unhealthy way to lose weight, not only will the weight rebound easily, but also may make people become weak, so it is not recommended to lose weight in this way. In daily life, it is recommended to adopt a healthy and scientific way of weight loss, which can be rationalized and healthy by strengthening exercise, controlling the total calorie intake, increasing the intake of fresh vegetables and fruits as well as reducing the intake of fat, which will also help to avoid weight rebound. If necessary, go to the hospital to consult a professional doctor.