Can Supplements Prevent Cognitive Decline?
Current evidence does not support promising that a dietary supplement will prevent dementia or cognitive decline.
The practical answer
Prevention claims are among the highest-risk claims in cognitive health because they can influence medical decisions and create false reassurance.
What can influence the picture
NCCIH notes that direct evidence that dietary supplements can prevent Alzheimer's disease or other forms of dementia is lacking.
When to widen the lens
A supplement may still be studied for a narrower outcome, but that should not be inflated into a prevention claim.
Where supplements fit
Supplements are only one possible part of the picture. They should not replace evaluation of symptoms, sleep, medications, nutrition, physical activity or diagnosed conditions. When symptoms are new or consequential, identifying the cause is more important than choosing a cognitive-support product.
Sources & verification
We separate merchant claims from independent evidence. Key references used for this guide: