The Impact of Smoking on Us
Tobacco is a green plant that is dried and ground up. People smoke, chew, and sniff it. Each day, more than 3,800 persons younger than 18 years of age smoke their first cigarette. Each day, about 1,000 persons younger than 18 years of age begin smoking on a daily basis. (http://www.cdc.gov/tobacco/data_statistics/fact_sheets/fast_facts/ ) A carcinogen is any substance, radionuclide, or radiation that is an agent directly involved in causing cancer.(http://en.wikipedia.org/wiki/Carcinogen). More than 7,000 different chemicals have been found in tobacco and tobacco smoke. Among these are more than 60 chemicals known to cause cancer (carcinogens).(http://www.cancer.org/cancer/cancercauses/tobaccocancer/cigarettesmoking/cigarette-smoking-tobacco)
Effects of Smoking
2nd Hand Smoke
Environmental tobacco smoke that is inhaled
involuntarily or passively by someone who is not.
Mainstream smoke refers specifically to the smoke that a smoker inhales and then exhales
Side-stream smoke refers to the smoke that wafts off the end of a lit cigarette, cigar, or pipe.
Worldwide, 40% of children, 33% of male non-smokers, and 35% of female non-smokers were exposed to second-hand smoke in 2004. This exposure was estimated to have caused 379 000 deaths from ischaemic heart disease, 165 000 from lower respiratory infections, 36 900 from asthma, and 21 400 from lung cancer
Secondhand smoke increases the risk of coronary heart disease by ≈30%. This effect is larger than one would expect on the basis of the risks associated with active smoking and the relative doses of tobacco smoke delivered to smokers and nonsmokers.