Gaining weight in midlife may decrease dementia risk, study suggests

April 10, 2015 1:57 PM

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Gaining weight in midlife may decrease dementia risk, study suggests

A study of nearly 2 million people in Britain suggests an unexpected protective effect against dementia: obesity in midlife.

The research, published Friday in the journal The Lancet Diabetes & Endocrinology, linked a 34 percent increased risk of dementia among people who had a BMI of less than 20 kg/m2. A BMI of 18.5 is considered to be underweight. Meanwhile, the study findings linked very obese people— those with a BMI ...

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