Combination of cigarettes, e-cigarettes as harmful as cigarettes alone, study finds

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According to a recent study published in the American Heart Association’s journal Circulation, the use of both traditional cigarettes and e-cigarettes is as harmful as smoking cigarettes alone.

Researchers examined data of more than 7,100 U.S. adults ages 18 and older from the Population Assessment of Tobacco and Health Study. The participants of the study provided blood and urine samples from 2013 to 2014. Nearly 2 percent only vaped, approximately 10 percent used a combination of e-cigarettes and traditional cigarettes, approximately 30 percent smoked only cigarettes, and 58.6 percent did not use cigarettes or e-cigarettes.

Researchers studied five biomarkers of inflammation and oxidative stress and put participants into four categories. They found people who used cigarettes and e-cigarettes had the same level of inflammatory and oxidative stress biomarkers as those who smoked exclusively.

“Some people who smoke cigarettes, pick up e-cigarette use to reduce the frequency with which they smoke cigarettes,” Dr. Andrew C. Stokes, first author of the study, said. “They often become dual users of both products rather than switching entirely from one to the other. If e-cigarettes are used as a means to quit smoking, cigarette smoking should be completely replaced, and a plan to ultimately attain freedom from all tobacco products should be advised.”

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