Smoking linked to type 2 diabetes
Jan 15 2008
Smokers may be more likely than nonsmokers to develop type 2 diabetes.
Smokers may be more likely than nonsmokers to develop type 2 diabetes, according to a new research review.
The review included 25 studies of smoking and diabetes among a million people ages 16 and older in the U.S., U.K., Europe, Japan, and Israel.
None of those people had type 2 diabetes when the studies started. But more than 45,000 participants developed type 2 diabetes during the studies, which lasted for five to 30 years.
Heavy smokers - people who smoke at least 20 cigarettes per day - were more likely to develop type 2 diabetes than people who smoke fewer cigarettes or ex-smokers.
The pattern varied somewhat in its intensity but held for all but one of the reviewed studies. Still, the studies don't prove that smoking causes type 2 diabetes?.
The reviewers considered some diabetes risk factors, including the fact that type 2 diabetes becomes more common with age.
But the review doesn't show whether exercise, social class, or education affected the results.
The review may be a "conservative underestimate of the true association between smoking and type 2 diabetes".
Source: webmd.com
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