Being underweight in middle-age may raise the risk for dementia later on, while being overweight or obese may protect against dementia, hints the largest study yet to look at the association between body mass index (BMI) and dementia risk.
“Our findings contradict many but not all previous studies and is currently controversial” Nawab Qizilbash, MBChB, MRCP (UK), head of OXON Epidemiology Ltd, and honorary senior lecturer in epidemiology, London School of Hygiene and Tropical Medicine, United Kingdom, told Medscape Medical News.