The Claim

Among adults aged 65 and older who later developed mild cognitive impairment, daily multivitamin-mineral supplementation was associated with a 0.26 standard deviation slower rate of cognitive decline in the year before diagnosis compared to placebo, with greater effects observed in global cognition and executive function.

Source: Impact of Multivitamin-Mineral and Cocoa Extract on Incidence of Mild Cognitive Impairment and Dementia: Results from the Cocoa Supplement and Multivitamin Outcomes Study for the Mind COSMOS-Mind

What the research says

Supports is higher

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

Supports
68score
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.

Quantitative
1 study reviewed
In plain English

In adults aged 65 and older who later developed mild cognitive impairment, those who took a daily multivitamin-mineral supplement experienced a slower rate of cognitive decline in the year before diagnosis compared to those who took a placebo, particularly in overall thinking skills and executive function.

See the scientific wording

Among adults aged 65 and older who later developed mild cognitive impairment, those previously assigned to daily multivitamin-mineral supplementation showed a 0.26 standard deviation slower rate of cognitive decline in the year before diagnosis compared to those on placebo, particularly in global cognition and executive function.

Why this might work

Daily multivitamin-mineral supplements provide essential nutrients that help brain cells produce energy more efficiently and reduce damage from harmful molecules, which slows down the loss of thinking skills as the brain begins to show early signs of decline.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Impact of Multivitamin-Mineral and Cocoa Extract on Incidence of Mild Cognitive Impairment and Dementia: Results from the Cocoa Supplement and Multivitamin Outcomes Study for the Mind COSMOS-Mind

    Older adults who took a daily multivitamin and later developed memory problems still lost their thinking skills more slowly than those who took a sugar pill. The multivitamin didn’t stop memory problems from happening, but it helped slow them down once they started.

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

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