What harm does smoking do to human body? Inhaling carbon monoxide in cigarettes will reduce the ability of blood to absorb oxygen. Nicotine can make the heart beat faster, raise blood pressure, weaken cardiac endurance, cause coronary infarction due to myocardial hypoxia, promote the accumulation of atherosclerosis due to cardiac ischemia (or heartache), and many heart diseases begin to occur.
Second, the damage of smoking to the brain.
Among the ten hazards of smoking to the body, smoking can cause many brain diseases, reduce oxygen and blood circulation in the brain, lead to cerebral vascular bleeding and occlusion, and lead to paralysis, mental decline and stroke. The cause of stroke is that smoking leads to cerebral vasospasm, which makes blood coagulation easier. Smokers are twice as likely to have a stroke as nonsmokers.
Third, the harm of smoking to the oral cavity.
Smoking can lead to oral cancer and laryngeal cancer. The heat of tar and smoke in cigarettes will inflame salivary glands, damage taste buds and greatly weaken the ability of taste and smell. Next, it is easy to cause oral cancer, and about 2/3 patients can still live a hard life after discovering oral cancer. At the same time, smoke can raise the temperature in the throat from 37℃ to 42℃, causing slight burns to the mucosa inside, leading to chronic thermal trauma and eventually laryngeal cancer.
Fourth, the damage of smoking to the lungs.
Smoking can lead to short and irregular cilia of bronchial epithelial cells, dyskinesia, reduced local resistance and susceptibility to infection. Smoking can cause lung cancer. 90% of the total mortality rate is caused by smoking. The initial symptoms will not be found until the cancer cells spread to blood vessels and other organs. Smoking can also lead to emphysema, that is, toxic substances accumulated in the bronchi of the lungs, which make lung cells swell or rupture, resulting in breathing difficulties for patients.
Fifth, the harm of smoking to the stomach.
Among the top ten hazards of smoking to the body, for people with gastrointestinal diseases, smoking is enough to make them worse. With gastric ulcer or duodenal ulcer, the healing of ulcer will slow down and even become a chronic disease. Smoking can stimulate the nervous system, accelerate the secretion of saliva and gastric juice, make the gastrointestinal tract often tense, and lead to the loss of appetite of smokers. In addition, nicotine can also contract gastrointestinal mucosal blood vessels and reduce appetite. #p# Subtitle #e#
Sixth, the damage of smoking to the whole body bones.
Nicotine constricts blood vessels and reduces blood flow to new bones. The carbon monoxide inhaled during smoking also reduces the speed at which oxygen enters the body. Smoking can lead to osteitis and back pain, and most people with severe back pain are addicted to smoking. This is because smoking will reduce the blood flow of the articular disc, and the articular disc will degenerate early. Smoking can lead to arthritis. Smoking a pack of cigarettes a day will increase the prevalence rate by 50%. Smoking will lead to faster bone loss. Smoking can interfere with estrogen, which is an important hormone in bone development.
Seven, smoking damage to the liver.
What harm does smoking do to human body? Smoking will increase the burden on the liver. Regular smoking will affect the lipid metabolism of the liver, increase blood lipid, decrease benign cholesterol and increase malignant cholesterol. This has caused the burden of detoxification function of the liver to increase.
Eight, smoking damage to the intestine
Smoking can lead to colon cancer. The risk of this kind of cancer is directly proportional to the amount of smoking. Research shows that although quitting smoking can reduce the risk of other diseases such as heart disease and lung cancer, the risk of colon cancer is still high.
Nine. Damage of smoking to reproductive system
What harm does smoking do to human body? Smoking will inhibit the nerve center of spinal cord, weaken the desire of smoking men, and because smoking will make blood vessels contract and spasm, resulting in peripheral blood circulation disorders. Smoking is the main cause of impotence. Australia and Canada have printed this information directly on cigarette packs. In addition, smoking affects vitality and increases deformity, and it takes three to six months to return to normal after quitting smoking. If you want a smart and healthy child, baby experts advocate that you must give up smoking for three to six months.
X. the harm of second-hand smoke
Among the top ten hazards of smoking, the smoke emitted during smoking can emit more than 4,000 kinds of gases and particles, most of which are very strong irritants, and at least 40 of them can cause cancer in humans or animals. After smokers quit smoking, these particles can still stay in the air for several hours, can be inhaled by other non-smokers, and may be mixed with the decay products of radon gas, causing great harm to human health.