US EditionCaffeinated beverages may help protect the brain, study says
A study of 131,000 US health professionals found moderate caffeinated coffee or tea intake linked to an 18% lower dementia risk and slower cognitive decline.
- February 9, 2026, researchers found that moderate caffeinated coffee and tea intake from over 130,000 participants was associated with a lower dementia risk, according to a study published in JAMA.
- Researchers analysed repeated dietary data from food-frequency questionnaires every 2–4 years across NHS and HPFS, finding caffeine and polyphenols may reduce neuroinflammation and oxidative stress.
- Over follow-up of up to 43 years, 11,033 participants with dementia were identified, and NHS objective cognitive testing showed small improvements in TICS and global cognition scores.
- The authors cautioned the analysis was observational and not a randomized trial, decaffeinated coffee showed no dementia risk reduction, and generalizability is limited by predominantly White health professionals and dementia classification from death records and medical diagnoses.
- Clinicians were urged to individualize counseling and emphasize broader prevention—exercise, vascular risk control, sleep, diet—rather than prescribing caffeine, for those who already drink and tolerate it, Zhang said.
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Risk down by 18% thanks mainly to caffeine (present also in tea): the details in a wide research appeared on Monday on the website of the magazine "Jama"
Drinking coffee every day could reduce the risk of dementia, according to a large Harvard study, but probably only with caffeine. Researchers also found an optimal amount.
Coffee Tied to Lower Dementia Risk in Major Study
A major Harvard-led study has found that drinking two to three cups of caffeinated coffee daily is linked to a lower dementia risk. Published in JAMA on 9 February 2026, the research drew on data from 131,821 US health professionals tracked for up to 43 years. Those consuming the most caffeinated coffee saw an 18 per cent reduced risk of dementia compared to minimal drinkers, with similar patterns for tea but none for decaf. The findings held ac…
A comprehensive study linked the moderate consumption of coffee with caffeine and tea with a lower probability of developing dementia and with a better preservation of cognitive function during aging. The research analyzed data from more than 131,000 people in a row for up to 43 years and was published in the scientific journal JAMA. The work was developed by researchers from Massachusetts General Hospital, Harvard T.H. Chan School of Public Hea…
Caffeine may reduce risk of dementia, according to JAMA study
SHREVEPORT, La. (KTAL/KMSS) - New research from the Journal of the American Medical Association (JAMA) has found that higher caffeine intake may result in lower risks of developing dementia. Dr. Céline Gounder, CBS News medical contributor and editor-at-large for public health at KFF Health News, says the findings should be taken "with a massive grain [...]
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