He looked at MRI scans of people who are healthy weight. So BMI between 18.5 and 25, overweight, 25 to 30 BMI or over 30 obese. The people who are Overweight individuals had 4% less brain volume, and their brains looked eight years older than they were. How does people who were obese had 8% less volume think about that. And their brains look 16 years older. (22:24–22:32)
CLAIM
Asserts that being overweight is associated with reduced brain volume and accelerated brain aging.
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