* * Smoking doesn't necessarily make people thin * *. Although nicotine in tobacco can stimulate the brain, release more dopamine, increase metabolism and suppress appetite, which may make people thin or lose weight. However, long-term smoking will cause chronic damage to human blood vessels and trachea, and there is a risk of cancer to many organs. In addition, smoking may also affect the body's absorption and utilization of nutrients, leading to weight loss or malnutrition. Therefore, smoking is not a healthy way to lose weight.

If the body is too thin, it is recommended to check whether there are potential diseases, such as thyroid, diabetes, adrenal gland and digestive system diseases. If the disease is ruled out, you can gain weight by eating enough protein and foods rich in fat and carbohydrates (such as starch and sugar). In addition, we should pay attention to maintaining good living habits, including adequate sleep, a balanced diet and proper exercise. If you smoke for a long time, it is recommended to quit smoking as soon as possible to reduce the harm to your health.