The Claim

Higher tea intake (1–2 cups per day) is associated with a similar reduction in dementia risk and lower subjective cognitive decline as caffeinated coffee in a population of 131,821 participants from two U.S. cohort studies followed for up to 43 years.

Source: Coffee and Tea Intake, Dementia Risk, and Cognitive Function.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
59score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

People who drink 1 to 2 cups of tea daily have a similar level of reduced dementia risk and less subjective cognitive decline as people who drink caffeinated coffee, based on long-term data from over 130,000 individuals in the United States.

See the scientific wording

Higher tea intake (1–2 cups per day) is associated with a similar reduction in dementia risk and lower subjective cognitive decline as caffeinated coffee, based on data from 131,821 participants in two U.S. cohort studies followed for up to 43 years, suggesting tea may offer comparable cognitive benefits.

Why this might work

Compounds in tea and coffee reduce harmful inflammation and damage in the brain, which protects nerve cells from dying and keeps memory and thinking skills strong.

Suggested mechanismbased on 1 study

What the research says

1 study
  1. Study: Coffee and Tea Intake, Dementia Risk, and Cognitive Function.

    People who drink 1 to 2 cups of tea a day have about the same lower risk of memory problems and cognitive decline as people who drink the same amount of caffeinated coffee, based on a huge, long-term study of over 130,000 people.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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