Washington Post‘s “Study Links Middle-Age Belly Fat to Dementia” by Rob Stein:
The research is the latest evidence that fat in the abdomen is the most dangerous kind. Previous studies have linked an apple-shaped physique to a greater propensity for diabetes, heart disease and stroke. Researchers suspect that belly fat cells are the worst because of their proximity to major organs. They ooze noxious chemicals, stoking inflammation, constricting blood vessels and triggering other processes that may also damage brain cells.