Quote:
Originally Posted by Golfingnut
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Did you read your own link? If you scroll down to where they have "Pro and Con" you will see both opinions. Some doctors say, "yes, there is a causal relationship." And some say there is no
firm causal relationship.
This new Harvard study that I posted above may be more conclusive, leaving the others outdated.
At any rate, if it is an unsettled question, why should anyone risk permanent brain damage?