A staggering quote from this Guardian article:
The author explains how researchers are finally realising that they have made an appalling mistake in concentrating, to the exclusion of almost everything else, on trying to find drugs that would remove beta-amyloid plaques from the brains of people with the disease. This turns out to have been possibly the biggest, most expensive and most pointless wild goose-chase in the history of medical research.
There is also a summary of the recently-reported research which suggests a different approach to treatment or cure which looks promising and even opens up the possibility that lost memories may one day be regained.
A breath of fresh air!