This Australian cohort study of 12,047 men aged 65-84 years investigated whether adiposity in later life actually increases dementia hazard. Contrary to “conventional wisdom”, waist circumference in this population group was found to have no obvious association with dementia hazard. Higher adiposity was not associated with incident dementia in this Australian cohort of older men. Overweight men in later life had a lower risk of dementia than men of normal weight.
Power, BD. Alfonso, H. [and] Flicker, L. [et al] (2011). Body adiposity in later life and the incidence of dementia: the health in men study. PloS One, March 25th 2011, Vol.6(3), pp.e17902. (Click here to view the PubMed abstract).