The Study
CAFFEINE AND COFFEE INTAKE AND THE RISK OF ALZHEIMER’S DISEASE PROGRESSION: A SYSTEMATIC REVIEW AND META-ANALYSIS: A SYSTEMATIC REVIEW
This study looked at lots of older people who drank coffee and found that those who drank more coffee tended to forget things a little slower. But it doesn’t prove coffee made them remember better — maybe people who drink coffee also exercise more or eat healthier, and that’s what helped.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
This study looked at many older adults and found that those who drank more coffee or caffeine tended to have slower memory loss and better brain test scores.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 558 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — even small daily caffeine intake may help slow memory decline in older adults, which could mean more years of independent living.
- 2People who drank more caffeine had 24% lower risk of dementia (HR 0.76–0.81).
- 3Those drinking over 300 mg/day had 29% lower risk (HR 0.71) compared to under 100 mg/day (HR 0.94).
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Insights-Journal of Health and Rehabilitation
Year
2025
Authors
Aiman Sanosi
Related Content
Claims (4)
People who drink a moderate amount of coffee or tea may be less likely to develop dementia later in life — about 18% less likely, according to this claim.
People who drink a lot of coffee or tea—more than 300 mg of caffeine a day—might see their memory problems from Alzheimer’s slow down more than people who drink very little caffeine, based on studies that track groups over time.
People who drink a lot of coffee or consume a lot of caffeine seem to have better memory and slower brain decline as they age, according to studies that watch people over time — so coffee might help keep your brain sharp without costing much.
People who drink more coffee or caffeine-rich drinks tend to forget things less quickly as they get older, and this might mean caffeine helps slow down memory problems linked to Alzheimer’s.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.