Forget about collapsing lungs and heart failure, vaping could be stunting the growth of teens’ brains due to toxic metals like lead and uranium. Children as young as four have ended up in hospital with vape-related conditions like collapsed lungs as vaping fast becomes a ‘youth epidemic’. Roughly 15% of children aged 11 to 15, and more than a third of 16 to 17-year-olds in the UK have vaped, according to an Action on Smoking and Health survey.