Those who are plump, but metabolically healthy get lost in the wash, too. My life-long plump grandmother lived to the age of 102 - still living on her own until age 98. She never had dementia. I remember her reading aloud her birthday cards at her 100th birthday - no eye glasses. She was mobile and still taking care of her normal daily activities (dressing, bathing, bathroom, etc.) unassisted until the day she died. She was clearly fat, but healthy.



I'd love to see this data stratified for "Fat on the inside" vs "Thin on the inside", regardless of BMI. I'd bet that we would see a completely different picture of who is really at the highest risk.