Common Joint Supplement Glucosamine Linked to Increased Alzheimer’s Risk

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A study reported by multiple outlets, including أخبار 24 and dw.com, suggests that glucosamine, a widely used dietary supplement for joint pain, may accelerate cognitive decline and worsen Alzheimer’s disease. The findings, published in 2026, raise concerns about the safety of the supplement, which is consumed by an estimated 40 million people annually worldwide.

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What does the study say?
The research, conducted by a team of neuroscientists and pharmacologists, analyzed the effects of long-term glucosamine use on cognitive function in older adults. The study followed 1,200 participants over five years, comparing those who regularly took glucosamine with those who did not. Results indicated that individuals using glucosamine experienced a 15% faster decline in memory and executive function compared to non-users. Researchers observed similar patterns in animal models, where glucosamine supplementation correlated with increased amyloid-beta plaque accumulation—a hallmark of Alzheimer’s disease.

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Why is glucosamine a concern?
Glucosamine is commonly marketed as a natural remedy for osteoarthritis and