Evidence on brain-health supplements remains complex, with some studies showing potential links to accelerated cognitive decline.
Observational research does not suggest that dietary sources, like eating fish, are harmful; rather, they are associated with reduced dementia risks.
Researchers are shifting from simple test scores to advanced monitoring like EEG and metabolomics to track actual brain processing.
Experts emphasize that lifestyle factors like exercise, social engagement, and blood pressure management remain the strongest pillars for brain health.