, each cigarette smokers to last for 5 mg.Р740 million people are killed by secondhand smoke. ? The World anization (WHO) statistics show that the number of death in the world has reached 600 million every year because of smoking , more than for HIV/AIDS, tuberculosis, malaria in the sum of the death toll.Among them, the smokers death bout 5.4 million, or an average of every 6 seconds one smokers die;?Because of secondhand smoke exposure caused in non-smokers death toll is about 600000.Р1. Smoking can damage the brain, affect intelligence . Because nicotine in cigarettes inside stimulus plant nerve system, causing vasospasm, affect the brain cortical neural activity, make the person's intelligence breakdown. ?2. The nicotine o is a kind of nerve toxin, main infringer of the nervous system.
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