I often advise my father not to smoke

I often advise my father not to smoke

I often advice my father not to smoke.

Investigation report on "smoking is harmful to health"

Investigation report on "smoking is harmful to health"
I. raising of problems
Now many people are smoking, even some teenagers are smoking. I believe many students will always smoke when their relatives and friends come to your home. At this time, the room is filled with the smell of choking smoke, which makes people feel dizzy and dizzy. What harm does smoking do to human body? Will it do harm to people who do not smoke?
II. Investigation and analysis
(1) the disadvantages of smoking
Tobacco smoke contains at least three dangerous chemicals: tar, nicotine and carbon monoxide. Tar is a mixture of several substances that condenses into a sticky substance in the lungs. Nicotine is an addictive drug that is absorbed by the lungs, Carbon monoxide can reduce the ability of red blood cells to deliver oxygen to the whole body. A person who smokes 15 to 20 cigarettes a day is prone to lung cancer, oral cancer or laryngeal cancer, Smoking is the main cause of chronic bronchitis and emphysema. Chronic lung disease itself increases the risk of pneumonia and heart disease, and smoking also increases the risk of hypertension
Smoking is harmful to human body
(1) mouth and throat
Cigarette smoke (especially tar) is a carcinogen - that is, it can produce cancer in the tissues it touches. Therefore, any part of smokers' respiratory tract (including mouth and throat) may have cancer
(2) heart and artery
Nicotine can make the heart beat faster, blood pressure rise, tobacco smoke may be due to carbon monoxide, it seems to be able to promote the accumulation of atherosclerosis, and this situation is a cause of many heart diseases, a large number of smokers, heart attack, the probability of death is much greater than non-smokers
(3) esophagus
Most smokers like to swallow a certain amount of smoke, so the digestive tract (especially esophagus and pharynx) is at risk of cancer
(4) lung
The fine hairs arranged in the airway of the lung usually remove foreign substances from the lung tissue. These villi will continuously sweep the particles in the lung into the sputum or mucus and discharge them. In addition to causing cancer, the chemicals in tobacco smoke will gradually destroy some villi and increase the secretion of mucus. As a result, chronic diseases occur in the lung and bronchitis is easy to be infected, Smokers cough because the mechanical efficiency of lung cleaning is impaired and the amount of sputum increases
(5) bladder
Bladder cancer may be caused by inhaling carcinogenic chemicals in tar, which are absorbed by the blood and then excreted through urine
How harmful smoking is!
(2) will it be harmful for non-smokers to inhale and exhale
Smokers inhale only 30% of the toxins themselves, while 70% of the toxins in the air are harmful to other people's health
Discussion and suggestions
Smoking is harmful but not beneficial. What's special about smoking? Let's take action. People who don't smoke now should not smoke in the future. People who smoke often should restrain themselves. Eat five today and eat three tomorrow. They will quit smoking every day!

Smoking is harmful to health, it is harmful to the lung and heart, and it will affect the people around you

Smoking is harmful to health,for lung and heart damage is very big, also it will affect everyone around us.

On the harm of smoking to health

The most serious ill ness caused by smoking is lung cancer. Meanwhile smoking is a waste of money