The Claim
Moderate to high tea consumption (1–3 or ≥4 cups per day) is associated with a slower rate of decline in fluid intelligence over nearly a decade in adults aged 60–85, compared to never drinking tea, despite lower baseline performance in tea drinkers.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Adults aged 60–85 who drink one to three or four or more cups of tea per day show a slower decline in fluid intelligence over nearly ten years than those who never drink tea, even though tea drinkers started with lower fluid intelligence scores.
See the scientific wording
Moderate to high tea consumption (1–3 or ≥4 cups per day) is associated with a slower rate of decline in fluid intelligence over nearly a decade in adults aged 60–85, compared to never drinking tea, despite lower baseline performance in tea drinkers.
Caffeine from tea blocks signals in the brain that trigger inflammation and the buildup of harmful proteins. This keeps brain cells healthier and working better over time, so thinking skills decline more slowly.
What the research says
1 studyStudy: Moderate coffee and tea consumption is associated with slower cognitive decline
People who drink tea every day — whether one to three cups or more — tended to keep their thinking skills sharper over nearly 10 years than people who never drank tea, even if they started out with slightly lower scores.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.