“ A large study found that people who reduced and sustained lower levels of deep belly fat showed measurably slower brain shrinkage and better memory and thinking scores years later.
Carrying the APOE gene variant, the strongest known genetic risk factor for Alzheimer’s disease, did not change the relationship between visceral fat and brain shrinkage, suggesting the effect operates independently of inherited Alzheimer’s risk.
General weight loss, measured by BMI, did not show the same brain-protective pattern. It was specifically visceral fat, the kind packed around internal organs, that drove the association with brain health.”
https://studyfinds.com/deep-belly-fat-visceral-faster-brain-shrinkage/