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Excessive body fat around the middle linked to smaller brain size, study finds

Mark Hamer, G. David Batty. Association of body mass index and waist-to-hip ratio with brain structure. Neurology, Jan. 9, 2019; DOI: 10.1212/WNL.0000000000006879

Carrying extra body fat, especially around the middle, may be linked to brain shrinkage, according to a study published in the Jan. 9, 2019, online issue of Neurology®, the medical journal of the American Academy of Neurology. For the study, researchers determined obesity by measuring body mass index (BMI) and waist-to-hip ratio in study participants and found those with higher ratios of both measures had the lowest brain volume.

BMI is a weight-to-height ratio. It is determined by dividing a person’s weight by the square of their height. People with a BMI above 30.0 are considered obese...

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