The Claim
The null effect of multivitamin supplementation on cognitive decline in older men is not attributable to low compliance, as 83.5% of participants in the multivitamin group reported taking at least two-thirds of their assigned pills over a decade of follow-up.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In older men, taking multivitamins does not slow cognitive decline, and this lack of effect is not because most people did not take the pills — 83.5% took at least two-thirds of their doses over 10 years.
See the scientific wording
The null effect of multivitamin supplementation on cognitive decline in older men is unlikely to be due to low compliance, as 83.5% of the multivitamin group reported taking at least two-thirds of their study pills over a decade of follow-up.
The vitamins in the supplement do not change how brain cells communicate, repair themselves, or resist damage over time, so thinking skills stay the same as if no supplement was taken.
What the research says
1 studyStudy: Long-Term Multivitamin Supplementation and Cognitive Function in Men
Even though most older men took their multivitamins most of the time, their brains still aged at the same rate as those who took sugar pills. So, the vitamins didn’t help—and it wasn’t because they didn’t take them often.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.