The disadvantages of smoking are so many to our health, but still some people enjoy it. Smoking contains 4000 chemical substance and about 200 among them are danger for our life, such as cadmium, tolucne, hexamine, methanol, carbon monoxide, DDT, acetic acid, acetone, formaldehyde, ammonia, stearic acid, arsenic, hydrogen cyanide, nicotine, ethanol, methane, butane, tar, etc.
The main poisons in smoking are nicotine, tar, and carbon monoxide.
Nicotine is a nerve poison that usually used as a raw material for many kinds of insecticide. In low concentration, this substance can make addiction effect. Nicotine has limited carcinogen ability that decrease body immunity against cancer.
Tar will disturb revive channels and cause cough or sultry. A pile of tar in our body will cause cancer.
Carbon monoxide also has bad impact to blood vessels. It bound easier to hemoglobin than oxygen do. That's why smoker often feel in weak condition.
