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Coffee, tea lower dementia risk

1h

A large study of more than 130,000 people found that two to three cups of coffee or one to two cups of tea daily were associated with reduced dementia risk.

by Eric J. Topol

132%
erictopol.bsky.social
Coffee and improved cognition, reduced dementia
>130,000 people followed 37 years
Benefit seen only with caffeinated coffee or tea and most pronounced ~2 cups/day
@jama.com ☕️☕️https://jamanetwork.com/journals/jama/fullarticle/2844764
February 9, 2026 at 4:01 PM

Reposted by Eric J. Topol

44%

by Timothy D. McBride

27%
mcbridetd.bsky.social
Studies like this drive me nuts
www.nytimes.com/2026/02/09/h...
2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf.
www.nytimes.com
February 10, 2026 at 5:29 AM

Reposted by Álvaro J. Idrovo

6%

Reposted by Rita Rubin

5%
jama.com
Moderate consumption of caffeinated coffee or tea was linked to reduced #dementia risk and modest improvements in cognitive outcomes; no benefit was seen for decaffeinated coffee in an observational study of US adults.

bit.ly/4bEUa2F
Line graph titled 'Incident dementia' shows hazard ratio (95% CI) vs. caffeinated coffee intake. The curve starts at 1.0, declines until about 3 c/d intake, then slightly rises. Intake c/d ranges from 0 to >5. No. of cases and person-years are also provided.
February 9, 2026 at 4:15 PM

by Richard Price

9%
advincensorship.bsky.social
I'm going to live forever!
anthonymkreis.bsky.social Anthony Michael Kreis @anthonymkreis.bsky.social · 19h
Got no worries about dementia. My body is 90% coffee.

2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf. www.nytimes.com/2026/02/09/h...
2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf.
www.nytimes.com
February 9, 2026 at 7:11 PM

by Jacob T. Levy

6%
jacobtlevy.bsky.social
Saw the headline, went looking for this, and found it. The headline makes it sound as if the anti-dementia effect is limited to the 2-3 cup range, but it's not. The health benefits of coffee in general seem to be like this— they don't keep increasing with more, but they flatten out.
2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf. But beyond two and a half cups of coffee daily, the advantage plateaued, possibly because humans cannot metabolize any more of the bioactive compounds in coffee and tea, said the study’s senior author, Dr. Daniel Wang, an epidemiologist specializing in neurodegenerative diseases at Mass General Brigham health system. Dr. Wang, who drinks about three cups each of coffee and green tea daily, said the study didn’t find anything negative about larger caffeine quantities. But some studies suggest exceeding moderate amounts can harm health by disrupting sleep or exacerbating anxiety, said Dr. Fang Fang Zhang, an epidemiologist at Tufts University’s Friedman School of Nutrition Science and Policy, who wasn’t involved in the new research.
February 9, 2026 at 9:56 PM

by Michael B. Bishku

4%
mbishku.bsky.social
A cup (or 2 or 3) of coffee or tea a day helps keep dementia away — Proving that most of what natural foods or drinks people consume in moderation is fine.
February 10, 2026 at 12:09 AM

Reposted by Richard Price

3%
anthonymkreis.bsky.social
Got no worries about dementia. My body is 90% coffee.

2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf. www.nytimes.com/2026/02/09/h...
2 to 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not if It’s Decaf.
www.nytimes.com
February 9, 2026 at 7:06 PM
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