Interesting article, confirming a suspicion I have held for several years. Glad to see research connecting the various CNS diseases mentioned. I wonder if our increased reliance on meat in the diet (esp. in N. America, but not limited to N. America) has contributed to increased incidence of these diseases (Alzheimers, Parkinsons, etc), or if the increase can be explained merely due to increased longevity, giving time for the clinical symptoms to manifest themselves?

Of course, a third possibility exists, and that is simply an increased ability to diagnose (at least in postmortem exam) these conditions.

sir how it is going to be part of diagnosis (Post mortum)

I guess a better word would have been "identify", rather than "diagnose", which implies a living subject.

Each one is different, but looking for beta-amyloid plaques, tau, etc.