Losing weight without carbohydrates is unhealthy and may trigger hypoglycemia, affect brain function and so on. Carbohydrates are the most important source of calories in the human body, providing essential energy for the maintenance of physiological activities and brain functions. Not eating carbohydrates during weight loss is likely to trigger hypoglycemic symptoms, such as panic, hunger, sweating, fatigue, dizziness, etc. Insufficient calorie intake may affect brain function, resulting in slower reaction and affecting normal work. The key to successful weight loss lies in the fact that the energy consumed is always higher than the energy intake, and should be reasonably matched with the diet, pay attention to nutritional balance, to ensure a reasonable intake of carbohydrates, protein, fat, vitamins, minerals, water. You can choose fiber-rich carbohydrates to eat in moderation (such as coarse grains) to increase the body’s sense of satiety and reduce the intake and absorption of calories. During the weight loss period is not recommended to completely reject carbohydrates, in a reasonable diet at the same time, can be coupled with appropriate physical exercise, increase the consumption of calories, more conducive to the success of weight loss and physical health.