In a recent study of 15,456 smokers who started e-cigarettes as a way to quit tobacco, 71 percent of those age 65-plus were still smoking regular cigarettes along with e-cigarettes three months later
Viral filaments containing a single, densely packed protein species are especially prone to structural disturbances, which may abolish assembly of the viral particles due to steric constraints
Vaping at higher temperatures or taking longer, more frequent puffs can enhance the likelihood of throat irritation
Overviews of existing reviews and, where necessary, systematic reviews to summarise the evidence, including synthesis of qualitative data and quantitative meta-analyses, where appropriate
When the air-tight seal is lost, coolant can slip through openings and burn as white smoke