What are the harms of smoking to the human body?

The harm of smoking to human health is quite obvious. The harm to human health involves all aspects. Almost every part of the body is susceptible to the harm of tobacco. The most common ones are that they can easily cause heart disease, damage the brain, cause damage to the mouth, and cause various injuries to the lungs, stomach, liver, and intestines. In addition, the harm to the human reproductive system is particularly great.

1. Smoking causes blood clots and various heart diseases

Inhaling carbon monoxide from cigarette smoke reduces the blood's ability to absorb oxygen. Nicotine can increase the heart rate, blood pressure, weaken the heart's ability to withstand stress, myocardial hypoxia causing coronary artery infarction, and local cardiac ischemia (or angina pectoris) promotes the accumulation of atherosclerosis and the onset of many heart diseases.

Second, the damage of smoking to the brain

Smoking can cause a variety of brain diseases, reduce the amount of oxygen and blood circulating in the brain, cause bleeding and blockage of brain blood vessels, and lead to paralysis, intellectual decline and stroke. The cause of stroke is that smoking causes spasm of blood vessels in the brain, making the blood more likely to clot. Smokers are twice as likely to have a stroke as non-smokers.

3. Damage of smoking to the oral cavity

Smoking can cause mouth and throat cancer. The tar in cigarettes and the heat from the smoke can inflame the salivary glands, damage the taste buds, and greatly reduce the ability to taste and smell. Next, it is easy to develop oral cancer. About 2/3 of patients can still survive with difficulty after being diagnosed with oral cancer. At the same time, smoke can increase the temperature in the throat from 37°C to 42°C, causing micro-burns to the mucous membrane inside and producing chronic thermal trauma, which eventually leads to laryngeal cancer.

4. Damage of smoking to the lungs

Smoking can cause the cilia of bronchial epithelial cells to become shorter and irregular, as well as movement disorders, reducing local resistance and making it easier to get infected. Smoking causes lung cancer.

5. Damage of smoking to the stomach

For people with gastrointestinal diseases, smoking can make the disease worse. For people with gastric ulcer or duodenal ulcer, the healing of the ulcer will be slowed down and may even develop into a chronic disease.

6. Damage of smoking to bones throughout the body

Nicotine causes blood vessels to constrict, reducing blood flow to new bone. The carbon monoxide inhaled when smoking also reduces the rate of oxygen entering the body. Smoking can cause pelvic pain and back pain.

7. Damage to the liver caused by smoking

Smoking puts more strain on the liver. Frequent smoking affects the lipid metabolism of the liver, increasing the fat in the blood, reducing benign cholesterol and increasing malignant cholesterol. This reason puts an increased burden on the liver's detoxification function.

8. Damage of smoking to the intestines

Smoking causes colon cancer. The chance of developing this cancer is directly proportional to the amount of tobacco smoked. Studies have shown that although stopping smoking can reduce the risk of other diseases such as heart disease and lung cancer, the risk of developing colon cancer is still very high.

9. Damage of smoking to the reproductive system

Smoking has an inhibitory effect on the nerve center of the spinal cord, which weakens the desire of men who smoke. Smoking can also cause blood vessels to contract and spasm, causing peripheral blood circulation disorders. Smoking is the leading cause of impotence. Australia and Canada already print this message directly on cigarette packets. In addition, smoking affects vitality and increases the number of deformities. It will take three to six months after stopping smoking to return to normal. If you want a smart, healthy child, baby experts recommend that you stop smoking for three to six months.