Amazing! If this is true, how was it not discovered earlier? They cite studies that showed chitin in AD brains, and cases where anti-fungal treatment reversed AD. It's hard to imagine that this hypothesis did not occur to anyone until now.
Aside from the low number of patients investigated, it seems like a very thorough study, at least to a complete layman. (It's not saying much, I know :).) It appears to be an easily falsifiable hypothesis too. If I had Alzheimer's, I'd want to try taking anti-fungal drugs right away.