The biggest harm is going to be people getting side effects with no benefits. I suppose you could argue that Alzheimer's is so bad that who cares about bad side

The biggest harm is going to be people getting side effects with no benefits. I suppose you could argue that Alzheimer's is so bad that who cares about bad side effects, but usually you would not want a drug on the market with no real benefit and a bunch of potential side effects sitting out there.