First, rebound quickly: weight loss in Copenhagen is achieved by reducing calories in a short period of time, so it will rebound immediately after returning to normal diet. In the process of losing weight, basal metabolism slows down with the decrease of intake, and even exceeds the original weight after eating too much, and once again falls into painful weight loss.

Second, damage to renal function: The calories in this diet are far below the normal needs, which will break the normal nutritional cycle and damage the functions of kidney and spleen and stomach. There are especially few carbohydrates in it, which can't supplement sugar, and it is prone to dizziness, bad breath and other problems. It takes a long time to recover from the harm to the body, so it is recommended to use this diet only once a year.

Third, muscle loss: Because of the rapid weight loss, most of the weight loss is water and muscle. Because of the lack of calories and the lack of strength to exercise, the body can only consume muscles without sugar and fat. In addition to becoming loose, people's aging will also accelerate, and their body shape will be more obvious after the rebound.

Fourth, irregular menstruation: this method of diet control is bound to cause endocrine disorders. Many women are weak after a weight loss cycle, and menstruation is not coming. Irregular menstruation takes a long time to recuperate, and hormonal confusion can also lead to emotional restlessness and depression. The Copenhagen diet will reduce the body's resistance and make people easy to get sick. When women need to lose weight, they should take a gentler approach, and the effect will actually be better.