The Claim

Coffee consumption is non-linearly associated with dementia risk, with the lowest risk observed at an intake of 1–3 cups per day, as determined by dose-response analysis from nine cohort studies involving over 750,000 adults.

Source: Tea, coffee, and caffeine intake and risk of dementia and Alzheimer's disease: a systematic review and meta-analysis of cohort studies.

What the research says

Supports is higher

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

Supports
52score
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 3 cups of coffee a day might have the lowest chance of getting dementia, according to studies of hundreds of thousands of adults — but drinking more or less than that doesn’t seem to help as much.

See the scientific wording

Coffee consumption shows a non-linear association with dementia risk, with the lowest risk observed at 1–3 cups per day, based on dose-response analysis from 9 cohort studies involving over 750,000 adults.

What the research says

1 study

  1. Study: Tea, coffee, and caffeine intake and risk of dementia and Alzheimer's disease: a systematic review and meta-analysis of cohort studies.

    This study found that people who drink 1 to 3 cups of coffee a day have the lowest risk of dementia, which is exactly what the claim says.

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

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