According to this researcher a new Alzheimer's drug just got approved by the FDA. He says, based on the company's own research, it doesn't work at all just like all the other Alzheimer's drugs don't work. I don't remember exactly when he talks about it in the presentation but I think it was pretty far along. He also says there is good evidence that statins reduce cognitive ability, so there is that also. A very interesting presentation.

https://www.youtube.com/watch?v=HHbqx5WtQJU