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2002 SEP 12 - (NewsRx.com & NewsRx.net) -- Very light smokers significantly increase their risk of a heart attack, shows research in the Journal of Epidemiology and Community Health. Furthermore, women are much more susceptible than men to the detrimental effects of tobacco, even if they don't inhale.
The findings are based on a population sample of over 12,000 men and women taking part in the Copenhagen City Heart Study, which began in 1976.
The participants, all age 20 or older at the start of the study, were monitored up to 1998. During this period, 872 men and 476 women had a heart attack, and 2883 men and 2305 women died from other causes
After adjusting for major cardiovascular disease risk factors, including total cholesterol, lifestyle, family history, weight and diabetes, there was a strong and increasing link between the amount smoked and the risks of heart attack and death from other causes.
For the purposes of the study, a cigarette was equated to 1 g of tobacco, a cheroot to 3 g, and a cigar to 5 g. Over 80% of women smokers smoked cigarettes compared with just under 57% of male smokers.
Compared with nonsmokers, men doubled their risk of a heart attack inhaling the smoke of 6-9 g of tobacco a day; not inhaling the same amount increased the risk by 13%.
But among women, the detrimental effects were ...