The research and data make sense as cigarettes have carbon monoxide whereas a vape doesn't. This is the only data - there are other conditions such as "popcorn lung" which happens with vapes but not cigarettes and can be far more deadly. Also the risk of fires also as batteries explode. With a standard cigarette you typically use a lighter and can see the flame so it's easier to detect if out of control. In short there isn't any actual evidence vapes are better apart from research looking at one thing. I'll stick to my standard roll up for now.