In fact, many factors are related to heredity and family eating habits and structure. The fundamental reason why thin people don't grow meat is that the absorption of nutrients in the stomach and intestines is impaired, which leads to endocrine disorders in the spleen and stomach.

And fat people are fat, in addition to good absorption function, but also because:

1, dietary factors: excessive calorie intake, especially high-fat or high-sugar diet will lead to fat accumulation.

2. Activity and exercise factors: Exercise is the main way to consume energy. The amount of exercise decreases, the energy consumption decreases, and the unused energy is stored as fat in the whole body fat bank.

3. Neuropsychological factors.

4. Metabolic factors: high metabolism.

5. Endocrine factors: excessive insulin secretion and insulin resistance. Insulin receptors on adipocytes are not sensitive, and the density of insulin receptors per unit area on adipocytes decreases, which also promotes fat synthesis.