I will take a really risky guess on the premise that there are many different types of causes for Alzheimer's. But one type of them might be caused by parasites. And it's either the body's response or an intended affect of the parasite to enclose the parasite in a type of plague. Kind of like biofilm... or both. Reducing the plague or biofilm could allow the immune system to respond to it by "seeing" it... in some cases. It might also allow the parasite to grow faster if the immune system isn't successful or can't see it. Based on my guess, a treatment plan would involve biofilm/plague "breakers", fasting or behavior changes to reduce and eliminate parasite's life cycle, and anti-parasite medicines that can reach the blood brain barrier. Again, I think there are different types of causes for Alzheimer and this is just one cause.