Comment by slashdev

We’ve had rises in herpes viruses in developed countries. Shingles is a type of herpes virus. So I wouldn’t be too quick to make that judgment. Also in an aging population, it would have to be a relative rise in Alzheimer’s, not an absolute one. I don’t know the data, so I can’t say which it is.

But Alzheimer’s is a complex disease, it may well be there are multiple factors involved. I also am inclined to think there’s something to your hypothesis, there is some data to support it.