Rhonda Patrick· PhD
Long-term aerobic exercise starting in mid-life almost completely reversed age-related structural brain changes.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Long-term aerobic exercise starting in mid-life almost completely reversed age-related structural brain changes.
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And um it really showed that older adults that engaged in aerobic exercise, so they were doing more like 70 75% of their max heart rate, which is pretty good for someone who's 65 or older, right? Um they did this exercise for 2 years and they not only countered the brain atrophy that happens with age. So as we age as we get to older adult older adulthood we start to lose between 1 to 2% of our our hippocample brain region atrophies per year. Um these older adults that were engaging the physical activity um like I said close to vigorous intensity for that for that cohort. Not only did they not experience that 1 to 2% brain atrophy in the hippocample regions, they experienced growth. They experienced a 2% growth in their hippocample region. So that's effectively restoring about 1 to two years of previous loss of their the hippocample you know brain region.