After “cutting off carbon”, the body will initially lose weight, and then it will bring about various adverse reactions, such as dizziness, headache, fatigue, palpitation, constipation and other symptoms, and in serious cases, it will lead to mental decline. The term “Carbon Cutting” generally refers to a low-carbohydrate diet, in which the intake of carbohydrates is strictly limited and the intake of proteins and fats is increased. The most intuitive and quickest reaction of the body to a “carb-free” diet is a loss of body water, resulting in weight loss and less muscle mass. Long-term side effects such as dizziness, headache, fatigue, palpitations, constipation and other symptoms, and in severe cases, mental decline, and this damage to intelligence is generally irreversible. “Cutting off carbon” method to lose weight is still controversial, there have been studies proving that long-term low-carbohydrate diet will cause irreversible damage to the brain. If you want to lose weight, it is recommended to go to a regular hospital, under the guidance of a doctor to adjust the diet.