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Bigger BMI, Smaller Brain

March 4, 2010

Obesity (defined as a BMI greater than 30) and being overweight have been linked to brain atrophy in a new study of older adults. Researchers found that “Higher BMI was associated with lower brain volumes in overweight and obese elderly subjects. Obesity is therefore associated with detectable brain volume deficits in cognitively normal elderly subjects.” This may explain why obese people experience an increased risk for cognitive decline and dementia, which are generally caused by cardiovascular problems such as diabetes, hypertension, and stroke.

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