The flavor you choose for your e-cigarette liquid may determine how many toxins you inhale, new research suggests.
Those toxins -- called free radicals -- are linked to cancer, heart disease, inflammation and other diseases, the scientists said.
In the study, citrus and floral flavors tended to have higher levels of free radicals, while vanilla flavors produced lower levels.
"When [e-cigarettes] first came on the market, many people were saying they were harmless and that it was just water vapor," said lead researcher John Richie, a professor of public health sciences and pharmacology at Penn State College of Medicine.
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