Smoking increases the risk of cardiovascular and cerebrovascular diseases. This is because tobacco will aggravate coronary atherosclerosis and strengthen aorta, which will lead to coronary heart disease. Carbon monoxide contained in tobacco enters the blood and combines with hemoglobin, thus reducing its ability to transport oxygen. Cigarette will shorten the cilia of bronchial epithelial cells, resulting in decreased resistance and immunity and easy infection. The smoke released during smoking contains a lot of nitrosamines and tar, which is a strong carcinogen and increases the risk of esophagus, digestive tract and cancer. For people who smoke for a long time, it will affect the metabolism of liver lipids and increase the fat in the blood, thus increasing the burden of liver detoxification.
Then talk about the harm of drinking. Excessive drinking will damage the liver, reduce vision, reduce detoxification ability, reduce the immune system, and infect some tumors and other diseases. When alcohol enters the stomach, it may stimulate the gastric mucosa. Drinking alcohol can promote local blood circulation, accelerate the blood flow of cardiac arteries, and easily cause cardiovascular and cerebrovascular diseases such as hypertension. Alcohol is excreted mainly through the kidneys. Excessive drinking will increase the risk of liver disease, affect the male prostate and reduce sexual ability.
Finally, as long as you quit smoking and drinking, the advantage of quitting smoking and drinking is that you can provide enough oxygen and blood for your skin, make your skin brighter and improve the survival rate of sperm. After quitting smoking, the brain is no longer controlled by nicotine, which will wake up the brain and make the accident very agile, so the lungs are clean and will not be paralyzed. After prohibition of alcohol, the liver slowly returned to normal, reducing the burden on the liver, reducing liver diseases, reducing the stimulation to the coronary artery wall and stabilizing blood pressure.
In short, smoking and drinking will affect people's life span, because smoking and drinking will increase the risk of certain cancers and prolong the life span of people who quit smoking and drinking on time 10 years old or older.