Clinical Report: Coffee, Tea Linked to Lower Dementia Risk
Overview
A prospective cohort study found that drinking 2-3 cups of caffeinated coffee or 1-2 cups of tea daily is associated with a lower risk of dementia and improved cognitive function. The study included 131,821 participants and documented 11,033 cases of dementia over up to 43 years of follow-up.
Background
Dementia is a significant public health concern, affecting millions worldwide and leading to substantial healthcare costs. Identifying modifiable risk factors for dementia is crucial for prevention strategies. This study explores the potential protective effects of caffeinated beverages, specifically coffee and tea, on cognitive health.
Data Highlights
| Consumption Level | Dementia Risk (Odds Ratio) | Incidence Rate (per 100,000 person-years) |
|---|---|---|
| Highest Quartile Coffee | 0.82 | 141 |
| Lowest Quartile Coffee | 1.00 | 330 |
| Highest Tertile Tea | 0.86 | N/A |
| Lowest Tertile Tea | 1.00 | N/A |
Key Findings
- Higher caffeinated coffee consumption is linked to a lower likelihood of developing dementia.
- Participants in the highest quartile of coffee intake had a 0.82 times lower risk of dementia compared to the lowest quartile.
- Tea consumption also showed protective associations, with a 0.86 times lower risk in the highest tertile.
- No significant association was found between decaffeinated coffee intake and dementia risk.
- Subjective cognitive decline was lower in those with higher coffee intake.
- Associations remained consistent across various demographic subgroups.
Clinical Implications
Healthcare professionals should consider discussing dietary habits, particularly caffeinated beverage consumption, with patients as part of dementia risk reduction strategies. While coffee and tea may offer protective benefits, they should be integrated into a broader lifestyle approach that includes other modifiable risk factors.
Conclusion
The study suggests that moderate consumption of caffeinated coffee and tea may be beneficial for cognitive health and dementia prevention. Further research is needed to confirm these findings and explore underlying mechanisms.
References
- Coffee and Tea Intake, Dementia Risk, and Cognitive Function, JAMA, 2025 -- Coffee, Tea Linked to Lower Dementia Risk
- Anemia Tied to Higher Dementia Risk, JAMA Network Open, Year -- Anemia Tied to Higher Dementia Risk
- Iron Deficiency Linked to Dementia Risk, BMC Medicine, Year -- Iron Deficiency Linked to Dementia Risk
- Breast Cancer: New Study Finds Survivors May Face Lower Risk of Alzheimer Dementia, JAMA Network Open, Year -- Breast Cancer: New Study Finds Survivors May Face Lower Risk of Alzheimer Dementia
- 2024 Lancet Commission underscores the potential for dementia risk reduction, identifying 14 modifiable risk factors across the life course | Alzheimer Europe
- Structured vs Self-Guided Multidomain Lifestyle Interventions for Global Cognitive Function: The US POINTER Randomized Clinical Trial | Trials | JAMA | JAMA Network
- European Journal of Preventive Cardiology — Cardiovascular diseases and risk of dementia in the general population
- 2024 Lancet Commission underscores the potential for dementia risk reduction, identifying 14 modifiable risk factors across the life course | Alzheimer Europe
- Structured vs Self-Guided Multidomain Lifestyle Interventions for Global Cognitive Function: The US POINTER Randomized Clinical Trial | Trials | JAMA | JAMA Network
- Coffee and Tea Intake, Dementia Risk, and Cognitive Function | Lifestyle Behaviors | JAMA | JAMA Network
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