Studie verbindet Gelenkschmerzen-Nahrungsergänzungsmittel mit beschleunigter Demenz: Neue Forschungsergebnisse haben einen Zusammenhang zwischen der Einnahme von Glucosamin, einem beliebten rezeptfreien Nahrungsergänzungsmittel gegen Gelenkschmerzen, und einer höheren Wahrscheinlichkeit des Fortschreitens von einer leichten kognitiven Beeinträchtigung zur Alzheimer-Krankheit festgestellt.
https://ufhealth.org/news/2026/study-links-joint-pain-supplement-to-accelerating-dementia-2
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# Study links joint pain supplement to accelerating dementia
New research has found an association between taking glucosamine, a popular over-the-counter supplement used for joint pain, and a higher likelihood of progressing from mild cognitive impairment to Alzheimer’s disease.
The finding by University of Florida neuroscientists is based on a large retrospective analysis of patients’ records as well as supporting data from advanced imaging technology used to scan human brain specimens and Alzheimer’s disease mouse models.
While the results are preliminary and require validation in a human clinical trial, they provide yet another piece of a much bigger mechanistic picture involving metabolic dysregulation and neurodegeneration, according to the study [published today](https://www.nature.com/articles/s42255-026-01538-4) in Nature Metabolism.
[https://www.nature.com/articles/s42255-026-01538-4](https://www.nature.com/articles/s42255-026-01538-4)
Well poop. There goes one supplement.
Is there any clinical support for glucosamine as a preventative therapy for joint pain? The last clinical studies I read showed no support, and my quick and dirty Pubmed review of a few meta- analyses shows no real clinical efficacy. Are there physicians still recommending this or are people taking this on their own?
Important distinction is „association“ and not „causation“
Relevant bit:
„Genetic knockdown of glycan biosynthetic enzymes improves cognitive outcomes in AD mice whereas oral glucosamine supplementation impairs them. A retrospective analysis of electronic health records from patients with AD with varying disease severity shows that glucosamine supplementation is associated with accelerated AD progression and worsened survival.“
I do wonder if they were able to isolate inflammation as a factor. I’m guessing that those taking joint pain supplements have a higher likelihood of experiencing chronic inflammation. And chronic inflammation is being linked with a whole bunch of chronic conditions these days.
I suspect in about a decade or so, we will view chronic inflammation as a much bigger health issue than it currently is. Dementia and cognitive impairment itself has been linked to chronic inflammation, and that’s been posited as a causal factor for why anti-inflammatory supplements like fish oil have been correlated with preserving cognitive function.
Chronic pain, stress, inflammation.
I think that is the link
There’s an association between Alzheimer’s and sedentary lifestyle. There’s likely an association between sedentary lifestyle and using glucosamine for joint pain. This seems like A=B and B=C so A=C.
I wonder if this happens in dogs too. Purely anectdotlal, but I used to give my senior corgi glucosamine and it helped her mobility so much but she did get bouts of what we called „dogmentia“.
[Regular glucosamine use is associated with a lower risk for total mortality (15%), CVD mortality (18%), cancer mortality (6%), respiratory mortality (27%) and digestive mortality (26%).](https://ard.bmj.com/content/79/6/829)
[In conclusion, regular consumption of glucosamine/chondroitin seems to be significantly associated with lower overall and cardiovascular mortality. Given the strength of the association, a 27% lower likelihood of overall mortality and a 58% lower likelihood of cardiovascular death, prospective studies may be warranted.](https://pmc.ncbi.nlm.nih.gov/articles/PMC8366581/)