WEDNESDAY, Sept. 20, 2017 (HealthDay News) -- The nicotine in e-cigarette vapor may cause adrenaline levels to spike in the heart, potentially increasing risk of heart attack and sudden cardiac death, a new study reports.
Electronic cigarettes have been promoted as a healthier alternative to tobacco cigarettes because they deliver vastly lower levels of carcinogens, researchers say.
Based on the results, Middlekauff said, current tobacco cigarette smokers still would be better off switching to e-cigarettes. They would avoid the carcinogens produced by burning tobacco, even though they could face heart health effects from nicotine.
At the same time, there's now evidence that e-cigarettes could pose a health risk to people who have never smoked tobacco because of the nicotine they contain, Middlekauff added.
"If you don't smoke at all, I would strongly recommend against using electronic cigarettes, because they're not harmless," she said.
The study was published Sept. 20 in the Journal of the American Heart Association.
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