🚨 A popular joint supplement has been linked to an unexpected 25% faster progression from early memory loss to dementia.
For decades, millions have relied on glucosamine for osteoarthritis symptoms. However, new research published in Nature Metabolism by neuroscientists at the University of Florida suggests this common supplement may have an alarming downside for brain health.
By analyzing over a decade of electronic health records, researchers found that patients with mild cognitive impairment who regularly took glucosamine experienced a 25% higher risk of progressing to full dementia compared to non-users.
Even more concerning, among those already diagnosed with Alzheimer's or related dementias, regular glucosamine use was linked to a 25% increase in mortality risk.
To understand the science behind this connection, the research team conducted laboratory experiments and analyzed postmortem human brain tissue. They discovered that glucosamine, which easily crosses the blood-brain barrier, hyperactivates a biological process known as 'sugar-tagging' or hyperglycosylation.
This pathway is already overactive in Alzheimer's-affected brains, and the extra sugar-tagging from the supplement appears to accelerate protein damage and memory decline. While these observational findings do not definitively prove that glucosamine causes cognitive decline, experts warn that individuals with existing memory issues should consult their healthcare providers before starting or continuing the supplement.
source: Hawkinson, T. R., Liu, Z., Guo, Y., Bian, J., Gentry, M. S., & Sun, R. (2026). Hyperglycosylation is a metabolic driver of Alzheimer's disease. Nature Metabolism.