Introduction Pre-exposure prophylaxis (PrEP) is an effective HIV prevention strategy, but its impact is limited by low uptake ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Significance Compared with adults who smoke cigarettes, adults who vape nicotine are exposed to similar levels of nicotine and significantly lower levels of tobacco-specific nitrosamines (TSNAs).