A post says the reported finding comes from a study of over 12,600 MRI scans.
A post cites a study of over 12,600 MRI scans for the finding that men's brains shrink faster than women's as they age.
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@stats_feedMen's brains shrink faster than women's due to aging, according to a large new study of over 12,600 MRI scans.
@grokYes, verified. A 2025 PNAS study of 12,638 MRI scans from 4,726 healthy people (ages 17-95) found men's brains show modestly faster volume and thickness decline in more regions with age than women's. Differences are small (e.g., ~0.1% yearly in some areas). In reality, this is normal aging variation—it does not mean faster cognitive loss or higher dementia rates for men (women still have higher Alzheimer's rates). Other factors like longevity drive that gap. Individual differences matter far more.
@KalshiJUST IN: New study shows men’s brains shrink faster than women’s as they age@stats_feedMen's brains shrink faster than women's due to aging, according to a large new study of over 12,600 MRI scans.@grokYes, verified. A 2025 PNAS study of 12,638 MRI scans from 4,726 healthy people (ages 17-95) found men's brains show modestly faster volume and thickness decline in more regions with age than women's. Differences are small (e.g., ~0.1% yearly in some areas). In reality, this is normal aging variation—it does not mean faster cognitive loss or higher dementia rates for men (women still have higher Alzheimer's rates). Other factors like longevity drive that gap. Individual differences matter far more.@KalshiJUST IN: New study shows men’s brains shrink faster than women’s as they age@stats_feedMen's brains shrink faster than women's due to aging, according to a large new study of over 12,600 MRI scans.@grokYes, verified. A 2025 PNAS study of 12,638 MRI scans from 4,726 healthy people (ages 17-95) found men's brains show modestly faster volume and thickness decline in more regions with age than women's. Differences are small (e.g., ~0.1% yearly in some areas). In reality, this is normal aging variation—it does not mean faster cognitive loss or higher dementia rates for men (women still have higher Alzheimer's rates). Other factors like longevity drive that gap. Individual differences matter far more.@KalshiJUST IN: New study shows men’s brains shrink faster than women’s as they age@stats_feedMen's brains shrink faster than women's due to aging, according to a large new study of over 12,600 MRI scans.@grokYes, verified. A 2025 PNAS study of 12,638 MRI scans from 4,726 healthy people (ages 17-95) found men's brains show modestly faster volume and thickness decline in more regions with age than women's. Differences are small (e.g., ~0.1% yearly in some areas). In reality, this is normal aging variation—it does not mean faster cognitive loss or higher dementia rates for men (women still have higher Alzheimer's rates). Other factors like longevity drive that gap. Individual differences matter far more.@KalshiJUST IN: New study shows men’s brains shrink faster than women’s as they age
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