The Claim

A 1-unit increase in intake of a dietary pattern high in lignans, flavonols, and isoflavonoids is associated with a 0.9% reduction in the annual rate of global cognitive decline in elderly individuals aged 73 and older, as measured by standardized neuropsychological testing over three years.

Source: Polyphenol intake and risk for dementia and cognitive decline in the elderly population of Greece: A principal component analysis approach.

What the research says

Supports is higher

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

Supports
60score
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

Elderly individuals aged 73 and older who consume a diet higher in lignans, flavonols, and isoflavonoids show a 0.9% slower rate of cognitive decline per year compared to those with lower intake, as measured by standardized neuropsychological tests over three years.

See the scientific wording

A 1-unit increase in intake of a dietary pattern high in lignans, flavonols, and isoflavonoids is associated with a 0.9% reduction in the annual rate of global cognitive decline in elderly individuals aged 73 and older, as measured by standardized neuropsychological testing over three years.

Why this might work

Eating foods rich in these plant compounds reduces harmful buildup of toxic proteins in the brain, calms inflammation, and neutralizes damaging molecules, which keeps brain cells and their connections working longer.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Polyphenol intake and risk for dementia and cognitive decline in the elderly population of Greece: A principal component analysis approach.

    People who ate more of foods like broccoli, beans, and spinach had slightly slower memory and thinking decline over three years — exactly what the claim says.

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

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