US EditionCaffeinated beverages may help protect the brain, study says
A 43-year study of 131,000 US health professionals found 18% lower dementia risk with moderate caffeinated coffee and tea, but no benefit from decaf, researchers said.
- Published in JAMA on February 9, 2026, the study found moderate caffeinated coffee intake linked to lower dementia risk.
- Researchers analysed data from nearly 132,000 participants in the Nurses' Health Study and Health Professionals Follow-Up Study with follow-up up to 43 years and repeated dietary questionnaires.
- Data showed that the highest caffeine group had an 18% lower dementia risk, tea drinkers a 16% reduction, and caffeinated coffee drinkers reported 7.8% subjective cognitive decline versus 9.5%.
- Researchers cautioned that the observational study design cannot establish causation, decaffeinated coffee showed no association with lower dementia risk, and caffeine and polyphenols may reduce inflammation and oxidative stress.
- Contrasting earlier work, the team found no added benefit from very high intake and consistent results across genetic risk, with Daniel Wang, MD, ScD, noting the effect size is small and Yu Zhang reporting similar associations across genetic groups.
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Caffeine, AI, and Pharma Innovations: Today's Health Headlines
Caffeine, AI, and Pharma Innovations: Today's Health Headlines In recent health developments, a new study suggests that daily consumption of caffeinated coffee or tea may reduce the risk of dementia by 18%. The study, involving over 132,000 U.S. participants, highlights caffeine's potential protective effects on brain health.Meanwhile, Indian pharmaceutical companies Zydus Lifesciences and Aurobindo Pharma announce profit gains, riding on strong…
(Seoul = Yonhap News) Reporter Lee Ju-young = Drinking 2-3 cups of coffee containing caffeine or 1-2 cups of tea a day can slow cognitive decline and lower the risk of dementia...
Hold onto that cup o' joe: Study finds moderate caffeine intake may reduce dementia risk
The study from Mass General Brigham determined that those who drank two to three cups of regular coffee daily, or one to two cups of caffeinated tea, had lower rates of dementia, slower cognitive decline and more preserved cognitive function. Researchers emphasized more work is needed to determine whether a causal link exists between caffeine intake and cognitive function.
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