The problem with that premise is that almost every substance has a remote chance of causing cancer in some way or another. Just ask the state of California. So you would have to ban everything if that is really your stance.
The correct (and scientifically valid) thing to do is to only take action when there is actual evidence and proof of harm being done. Otherwise, anyone can simply say X is harmful and pass regulations to get their pet bogeyman pulled off the market, and that is basically what is happening here.
The correct (and scientifically valid) thing to do is to only take action when there is actual evidence and proof of harm being done. Otherwise, anyone can simply say X is harmful and pass regulations to get their pet bogeyman pulled off the market, and that is basically what is happening here.