How are tobacco harmful to health?

Everyone knows that smoking is harmful to health, so what are the manifestations of tobacco being harmful to health? Everyone needs to develop good living habits. Any habits that threaten human health need to be corrected as soon as possible, especially smokers should quit smoking as soon as possible. Long-term smoking will not only paralyze the brain nerves, but also pose other hidden dangers, which will affect people's health to varying degrees.

Smoking causes lung diseases: Smoking is one of the main causes of chronic bronchitis, emphysema and chronic airway obstruction. Smoking can cause changes in the structure and function of the central and peripheral airways, alveoli and capillaries, and affect the lung's immune system, leading to the occurrence of lung diseases.

Smoking induces cardiovascular diseases: Smoking not only induces lung diseases, but also cardiovascular diseases. Studies have shown that the incidence of coronary heart disease, hypertension, cerebrovascular disease and peripheral vascular disease in smokers is significantly higher than that in non-smokers. The pathogenesis of cardiovascular disease induced by smoking is mainly that smoking causes endothelial dysfunction, increased thrombosis, enhanced inflammatory response and oxidative modification.

Smoking causes osteoporosis: Can smoking a cigarette cause osteoporosis? Many smokers may have such doubts. Smoking can indeed cause osteoporosis. The principle is that nicotine in tobacco can affect the absorption of calcium, nicotine inhibits osteoblasts, stimulates the activity of osteoclasts, etc., not to mention other things. Insufficient calcium intake alone will cause some bone calcium to be released into the blood to maintain normal blood calcium levels. This will reduce bone density and cause osteoporosis.

Smoking causes cancer: It is a recognized fact that smoking causes cancer. Smoking is not only one of the important risk factors of lung cancer (smokers are 13 times more likely to develop lung cancer than non-smokers), but also has a certain relationship with the occurrence of lip cancer, tongue cancer, oral cancer, esophageal cancer, stomach cancer, colon cancer, pancreatic cancer, kidney cancer and cervical cancer. Studies have shown that carcinogens in smoke can also affect the fetus through the placenta, causing a significantly increased incidence of cancer in their offspring.

Through the above introduction, everyone is very clear about the harmful effects of tobacco on health. Smoking not only directly threatens people's lung health, but also has the possibility of causing cancer. Not only that, smoking also poses a threat to the health of family members. The harm caused by long-term exposure to secondhand smoke is no less than the harm caused by direct smoking.