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Even Infrequent Smoking Carries Heightened Mortality Risk

By Joe Elia

Smoking cigarettes — even one or less per day — is associated with increased mortality risk, a JAMA Network Open study shows.

Researchers combined data from several federal smoking surveys performed between 1992 and 2011. In those surveys, some 500,000 adults reported their smoking histories. National mortality data showed that, compared with never-smokers, daily smokers (averaging 600 cigarettes per month) bore a 2.3-fold higher all-cause mortality risk, with non-daily smokers (averaging 40 per month) sustaining a 1.8-fold higher risk.

Heightened mortality risks became apparent even at levels of 6 to 10 cigarettes per month.

The researchers conclude: "Thus, all smokers should quit, regardless of how infrequently they smoke."

JAMA Network Open article (Free)

Background: NEJM Journal Watch General Medicine coverage of approaches to smoking cessation (Your NEJM Journal Watch registration required)

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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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