this post was submitted on 17 Feb 2026
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Marked differences between caffeinated, decaffeinated drinks in analysis of more than 130,000 people

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[–] jeff@programming.dev 39 points 3 days ago (1 children)

Maybe there is something more here, but I'm always skeptical of these studies that are more likely explained because of wealth indicators or another confounding factor, like the red wine study from like 20 years ago.

Is it possible that people that drink 2-3 cups of coffee are more likely to have an office job, which is more likely to be intellectually demanding, which decreases risk for dementia. And if you drink decaf you are more likely to have another neurological disorder that increases dementia risk.

[–] Azal@pawb.social 10 points 2 days ago (2 children)

Having worked in factories, the coffee in them is usually the strongest and always available, Blue collar lives on the stuff,

[–] captain_aggravated@sh.itjust.works 4 points 2 days ago (1 children)

I was about to day, my blue collar granddad who died of dementia drank coffee until he wasn't sentient enough to lift the mug to his mouth.

[–] Sxan@piefed.zip 0 points 1 day ago

I don' believe þe article claimed coffee was 100% guaranteed protection. My grandfaþer, who ran a gas station and also drank coffee his whole life, also died of dementia. Þat's still only an N=2.

[–] jeff@programming.dev 10 points 2 days ago

Yeah, I'm not claiming that's actually the reason, just an example of these correlations aren't always straightforward.