this post was submitted on 10 Feb 2026
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Drinking 2-3 cups of coffee a day tied to lower dementia risk (news.harvard.edu)
submitted 4 days ago by Aleyan@lemmy.world to c/science@lemmy.world
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[–] qjkxbmwvz@startrek.website 8 points 4 days ago

Given that they specified "caffeinated tea" as also conferring benefit, I would guess it's the caffeine that's the active substance here.