stuff.co.nz/life-style/well...
“Alzheimer’s surprise
The study of participants' brains has revealed that 40 per cent of people who die without dementia have enough Alzheimer’s pathology in their head that doctors would have thought they should have had dementia. This is a stunning result, she says, because they had been functioning normally in their daily lives.
On the flip side, some people who had been diagnosed with dementia did not have visible signs in their brains when looked at under microscopes, which meant doctors were missing something.
"There's a lot more going on... I think we need to understand why these pathologies are more toxic to some people or why some people appear to be resilient to them and can keep on going and others””
I wonder if the same is true of Parkinson’s.