It's all just talk

Nicotine and e-cigarettes

Since e-cigarettes are still relatively new, there simply hasn't been enough time to study the long-term effects of inhaling these vapors. "We don't have those 10, 20, 30 years of research on people who use e-cigarettes so we really don't know what it does yet — but we do know what nicotine does, and it's not good".

Nicotine can act as a neurotoxin and alter brain chemistry, so the brain doesn't function normally without it. "Nicotine is very dangerous for kids and teenagers, because their brain is still developing and nicotine is a gateway drug — it primes the brain so things like cocaine and heroin are more rewarding".

The effects of inhaling secondhand emissions from e-cigarettes are still being studied, but the experts do advise parents to not vape around their children. "Pregnant women should not use e-cigarettes, because the baby will get exposed to nicotine and this can impact lung and brain development".

https://www.buzzfeednews.com/article/carolinekee/juul-ecigarette-vape-health-effects