Tobacco contains nicotine, which can cause lung cancer. I once saw an experiment on TV, which was the lung of a person who smoked 15 years. I really don't know, look at the next jump! It's dark and disgusting. The doctor said it was nicotine and other toxins in the smoke! I sincerely believe that smoking is drug abuse!
On another occasion, I happened to see an article on the Internet, which specifically talked about the dangers of smoking, and it said:
Smoking is a special hobby of some people. Because it can directly act on the heart after entering the human body, it has different degrees of damage to the respiratory nerve, cardiovascular, digestive and urinary organs of the human body. Long-term smoking can lead to many diseases.
Most people know that smoking can be fatal. They also know that smoking can lead to heart disease, stroke, upper respiratory tract infection and lung cancer. But how can smoking cause these deadly diseases? The research of modern scientists has completely confirmed this point.
Chronic obstructive pulmonary disease: Symptoms include dyspnea, cough, expectoration and wheezing.
Let's talk about human lungs first. When we inhale, air enters our lungs from our nose and mouth through the trachea. The trachea is divided into left and right bronchi, which enter the left and right lungs respectively. Air enters bronchi, bronchioles and finally alveoli. In the alveoli, oxygen will penetrate into the blood and be brought to all parts of our body by the blood. At the same time, the carbon dioxide in the blood is also discharged from our blood and excreted with our breath.
Smoking is the main cause of all these diseases. Due to long-term heavy smoking, the trachea is in an inflammatory state for a long time, the cilia on the trachea wall are destroyed, the function of expectoration is reduced, the cells on the surface of the trachea are increased due to inflammation swelling and decomposition, and the amount of pus is increased, further blocking the trachea, making it difficult for air to enter and carbon dioxide to be discharged. Pulmonary alveoli swell, forming emphysema and further developing into pulmonary heart disease. A little activity will make it difficult to breathe and pant. Every cold will get worse and eventually die.
Toxins in smoke can cause stroke, and the harm of toxins in smoke can be great. Nicotine: A chemical that is as addictive as heroin and cocaine. When you smoke, nicotine can enter your brain in only 10 seconds, which makes your heart beat faster, increases your risk of heart disease and causes withdrawal symptoms when you don't smoke.
Carbon monoxide: harmful gas emitted by automobiles can replace 15% oxygen transported by red blood cells in human body, causing asthma and weakness. Carbon monoxide can also damage the inner wall of blood vessels, leading to the aggravation of atherosclerosis, fat deposition on the blood vessel wall, aggravating blood vessel obstruction and increasing the possibility of heart disease outbreak.
Tar: a substance used for paving roads. Tar contains many carcinogens and other chemicals. Including acetone, DDT, arsenic (a poison), formaldehyde, ammonia and other 4000 kinds of harmful substances and carcinogens.
Smoking will aggravate atherosclerosis and fat deposition in blood vessels, thus narrowing and blocking blood vessels. If the cerebral vessels are blocked, the supplied peripheral brain cells will die, leading to a stroke.
Smoking can also cause heart disease. When the coronary artery supplying the heart is blocked and the blood supply to the myocardium is cut off, the surrounding tissues will be necrotic, which will lead to the outbreak of coronary heart disease and myocardial infarction in smokers.
Smoking can cause lung cancer. Because smoking damages lung cells, that is, P53 gene. In every lung cell composed of DNA, there is a gene that can prevent cancer and prevent cancer from spreading. This negative protective gene is called P53, and its main function is to prevent cancer.
Medical research shows that benzopyrene, one of carcinogens in cigarette smoke, can directly invade and damage P53 gene. When P53 gene in lung cells is damaged, malignant tumor will begin to grow.
At the same time, smoking is also very harmful to the health of others. Cigarettes contain a variety of poisons, and non-smokers smell smoke as harmful to their health as smokers. It is more harmful to teenagers. In an article published on World No Tobacco Day on 3 1 May, 2002, the Singapore government pointed out: "The bad habit of smoking begins in childhood. According to a survey, a quarter of middle school students smoke or try to smoke, and it is difficult for them to quit smoking after they become addicted. " The article said: "The main reason why most middle school students smoke is curiosity and fun. They don't know that nicotine will invade their brains as long as 10 seconds after smoking the first cigarette, making them feel excited and then unable to extricate themselves. Once addicted, smoking is no longer curious. The survey shows that more than half of the families with mothers, fathers or both smoke, and more than 1/3 of the brothers and sisters smoke; Close friends smoke more than 55%. Although students who smoke come from different backgrounds, the social environment has a great influence on them. Therefore, parents who smoke should pay special attention to quitting smoking for the health of their children.
Fortunately, I live in a smoke-free family!
Here, I sincerely hope that everyone will strive to create a smoke-free environment and give every child a smoke-free childhood for their own health and the health of their families!