People need carbohydrates, protein, fat, vitamins, trace elements and water to maintain the nutrients they need for life. Carbohydrates are sugar, and balanced nutrient absorption can make them healthy. Carbohydrates come from many foods, and rice and wheat are rich in starch. Carbohydrates are an important energy source for the human body. Without carbohydrate intake, the body can only rely on protein and fat for energy supply. Because the transformation process of protein and fat is relatively complicated, the burden on the digestive system will increase, which may affect the gastrointestinal tract.

Although zero-carbon diet can quickly lose weight, it will also do great harm to the body. First of all, carbohydrate is the main energy source of human beings, and each gram of carbohydrate contains 4 kilocalories, which is the most cost-effective and fastest energy source. On the contrary, fat can't be decomposed, and low-carbon water will reduce sugar in the body. The human body needs at least 13g of sugar every day. If the carbohydrate is too low, it will affect the brain function and even cause dizziness, fatigue, irritability and emotional instability.

the basic component of human body structure is carbohydrate. If zero carbohydrate is absorbed, it will cause many functions of the body to be lost and cause serious harm. At present, common human foods in the world are composed of carbohydrates, including glucose. Insufficient intake of carbohydrates may lead to poisoning, amnesia, muscle fatigue, hair loss, diabetes, kidney disease and other hazards.

The glycoprotein formed by the combination of sugar and protein can constitute the mucus that protects gastric mucosa and chondroitin sulfate, which is the main component of cartilage. In addition, the glycoprotein also participates in the composition of antibodies, enzymes, hormones and nucleic acids. The glycolipid formed by sugar and fat is an important control of cell membrane. After sugar, the metabolic pattern of the body has changed, and the body needs to discharge more water, so frequent urination is normal. Some people may have constipation because of dehydration, electrolyte loss and changes in diet structure.