The Claim

Daily supplementation with a multivitamin-mineral complex for a period of two years results in a modest but statistically significant improvement in global cognitive function among adults aged 60 and older, with the magnitude of improvement equivalent to delaying cognitive aging by approximately two years.

Source: Effect of multivitamin-mineral supplementation versus placebo on cognitive function: Results from the clinic sub-cohort of the COSMOS randomized clinical trial and meta-analysis of three cognitive studies within COSMOS.

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.

Cause and effect
1 study reviewed
In plain English

Taking a daily vitamin and mineral pill for two years might help older adults think a little sharper—like their brain is two years younger than it would’ve been without the pills.

See the scientific wording

Daily multivitamin-mineral supplementation for 2 years leads to a modest but statistically significant improvement in global cognitive function in adults aged 60 and older, with an effect size equivalent to reducing cognitive aging by 2 years.

What the research says

1 study

  1. Study: Effect of multivitamin-mineral supplementation versus placebo on cognitive function: Results from the clinic sub-cohort of the COSMOS randomized clinical trial and meta-analysis of three cognitive studies within COSMOS.

    The meta-analysis combined data from three cognitive sub-studies within a registered trial, reporting a statistically significant benefit (p=0.0009) in global cognition with a quantified effect size. The language 'benefited' and the comparison to cognitive aging reduction imply a causal interpretation consistent with RCT design.

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

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