The Claim
Tea consumption is not associated with changes in reaction time, numeric memory, or pairs matching errors over a period of nearly a decade in adults aged 60–85, despite being associated with a slower decline in fluid intelligence.
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.
Over nearly ten years, drinking tea did not change how quickly people aged 60–85 reacted, remembered numbers, or matched pairs, but it was linked to a slower decline in their ability to solve new problems.
See the scientific wording
Tea consumption is not associated with changes in reaction time, numeric memory, or pairs matching errors over nearly a decade in adults aged 60–85, despite its association with slower fluid intelligence decline.
Caffeine in tea blocks signals that trigger brain inflammation and stops the buildup of a toxic protein that damages brain cells. This protects the brain's ability to solve new problems and think flexibly, but it does not change how fast a person reacts, remembers numbers, or matches pairs of items.
What the research says
1 studyStudy: Moderate coffee and tea consumption is associated with slower cognitive decline
The study found that older adults who drank tea regularly made fewer mistakes when matching symbols over time, which means tea might actually help with this skill — so the claim that tea doesn’t help is wrong on this point.
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.