| Topic: |
Sociology > Depression |
| User: |
"" |
| Date: |
28 Dec 2007 04:47:03 PM |
| Object: |
How Second Hand Smoke Threatens Your Health |
Secondhand smoking, breathing in of environmental tobacco smoke (ETS),
is also called passive smoking. It is when a person breathes in smoke
given off into the environment by other people.
Secondhand smoke or ETS is a combination of side stream smoke coming
straight from the burning tobacco and the mainstream smoke that is
exhaled by the smoker. It comprises of over 4000 chemical
constituents, a large proportion of which are the inducers of
respiratory illnesses and around 40 are known or suspected
carcinogens.
The US Environmental Protection Agency (EPA) has classified ETS as a
class A (known human) carcinogen along with other known carcinogens
such as arsenic, asbestos and benzene etc.
ETS is unfiltered, thus the levels of carcinogens in it are much more
than in smoke inhaled directly by an active smoker. Smoking of a
cigarette produces smoke from two major places, mainly from the tip of
cigarette and from the rest of the cigarette as the hot vapors
liberated through the cigarette and its filter.
About 70% to 80 % of ETS is from the burning tip of cigarette and
comprises of the highest levels of nicotine, carbon monoxide, tar and
various other carcinogens. Therefore, a constant
http://www.dontplayplay.com/html/horoscope/20060925/8210.html
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