Here is an article, about how dementia is thought to affect more slim
people, than over weight people. Possible because overweight people are less
likely to be deficient in Vit D and E.
I found this interesting as over the last few years, I have seen various hospital
wards and care beds (in my experiences with my aunt) and I have thought that it
seemed the slim, sometimes almost seeming malnourished elderly people, were the ones
with dementia. I did wonder though if maybe people with dementia just weren't
looking after themselves properly.
There was one place especially (where my aunt went for 6 weeks to get over a broken
shoulder). Where several people had advanced dementia. They were all stick thin.
One lady was shockingly thin but maybe she just had a poor appetite due to the dementia.
If anything it may well show there is a nutritional element going on with Alzheimer's.
But having said that I think a person is more likely to get vascular dementia (caused by
strokes) if you are over weight and/or have diabeties.
Maybe the real answer, is to pay more attention to nutrition during ones life. it's possible for
over weight and under weight people to have nutritional deficiencies.
Being overweight 'reduces dementia risk' - BBC News