Everything in the world is dangerous,you could risk assess everything.There's a risk in everything.So lets not ban air just yet.
A glass of red wine is proven to be good for you [Or something,I'll check this tomorrow.].
It depends on how much you drink,and the space of time.Clearly,if you misuse it then it is dangerous.But you can't ban it because not everyone will misuse it.
blahblahblah.
