Urgent Warning: Popular Supplement Linked to Faster Alzheimer’s Progression

A common supplement used for joint pain is now at the centre of a serious Alzheimer’s debate. The concern does not come from a small online claim, but from University of Florida research published in Nature Metabolism in June 2026.

The supplement is glucosamine, widely sold over the counter for joint health. The study does not prove that glucosamine causes dementia, but it reports a link strong enough for researchers to call for caution, especially among people already showing memory problems.