Smoking study shows new cancer risk

decades of tobacco cause change in lungs, say researches. the deadly nature of cigarettes has been
studied again more seriously and it was suggested that people who have smoked for more than 25 years
may have caused lung cell damage which cannot be stopped even if you give up.
according to researchers from the university of pittsburgh, long-term smoking appears to bring about
a biological change in the lungs, which causes cell growth, and this in turn could lead to cancer.
the researchers looked at three groups: non-smokers, those who had smoked for less than 25 years,
and those who had smoked for longer. in people who smoked at least 20 cigarettes a day for 25 years, the
doctors found much more evidence of protein called grp, which stimulates cells to divide. most smokers
die from heart disease. stopping smoking reduces the risk of heart disease almost immediately. it’s
always worth giving up, whatever your age, but the sooner the better.
a large-scale study published in 1994 found that cigarettes would eventually kill one in two smokers.
more than half the 20,000 heart attacks each year in people under 50 have been attributed to cigarettes
— with smokers in their 30s and 40s five times more likely to suffer a heart attack than non- smokers.
one of the most powerful men in the tobacco industry admitted publicly for the first time that smoking
was lethal and nicotine was an addictive drug.
geoffrey bible, chairman and chief executive of philip morris, testified in a florida lawsuit that
cigarette smoking might have caused 100,000 deaths.

cells — клетки; tocause — вызывать, становиться причиной; evidence — свидетельство,
наличие; lungs — легкие.
ii. put “t” next to the true sentences and “f” next to the false ones(6 points).
1. according to the researchers, lung cell damage caused by long-term smoking cannot be stopped
even if a person gives up smoking.
2. it is useless to give up smoking if you have been, smoking for about 25 years.
3. most long-term smokers suffer and die from lung cancer.
4. even the main producers of cigarettes admit that cigarette smoking is deadly dangerous for
people’s health.
5. according to the researches, it is protein called grs that causes the cancer cells growth,
stimulating cells to divide.
6. one can avoid a heart attack if he or she gives up smoking at any age, even being a long-term
smoker.
speaking.
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