Medically reviewed by Amelia MacIntyre, DO Nicotine quickly enters your bloodstream. Your liver then breaks down nicotine into several byproducts, primarily cotinine. Depending on what you're testing, ...

A recent study found that smoking an e-cigarette decreased the amount of oxygen being taken in by the lungs, regardless of whether it contained nicotine Bailey Richards is a writer-reporter at PEOPLE.

While people typically assume that vaping is relatively safe, a new study has shown that even using vapes that contain no nicotine can be harmful. The study compared zero-nicotine vapes with other ...

Researchers still do not know the safety and long-term health effects of using e-cigarettes and other vaping products. In September 2019, federal and state health authorities began investigating an ...

It's another reason to stop vaping in the new year. According to research, vaping, like smoking, has an immediate negative effect on the user’s blood flow — even if the vape does not contain any ...