This is utter rubbish; the negative effects on health of any activity or substance clearly cannot be judged by merely trying it. Think DDT, asbestos, thalidomid

This is utter rubbish; the negative effects on health of any activity or substance clearly cannot be judged by merely trying it. Think DDT, asbestos, thalidomide, and a massive list of other misadventures that we've tried over the past 100 or so years.