Updated

A study of more than 4,500 older adults found that people who were overweight or obese when diagnosed with dementia had a 16% to 27% lower risk of death than those at a normal weight. ScienceDaily reported the findings on November 11, 2026. Researchers suspect extra energy and muscle reserves may help patients survive the disease's toll on the body. The reason for the survival advantage remains unclear. The finding is described as surprising by the researchers.