Smoking has more harmful effects, and more people believe that smoking can help them lose weight, which is a very wrong view. If you smoke a lot to become thin, your health must be damaged and even potential diseases exist. Smoking does not accelerate the breakdown of fat nor does it consume fat, so it will not achieve the effect of weight loss and slimming. Smoking to become thin on the one hand because long-term smoking is easy to damage the human digestive system, if they are suffering from stomach disease, tobacco and other harmful ingredients will strengthen the gastric mucosa vasoconstriction, thereby aggravating the condition. Long-term smoking will also make patients lose their appetite, resulting in insufficient supply of nutrients, while the secretion of gastric acid will also increase, inducing the occurrence of gastric ulcers and other diseases. On the other hand, smoking can damage the metabolic function of the liver, resulting in the body’s inability to carry out normal metabolism, the inability to excrete toxic substances, and the patient’s weight loss.