Surprising
A 90-day trial linked 500 mg/day quercetin to a large increase in a bone-formation marker — but also a similarly large increase in a bone-breakdown marker, leaving the net effect unclear.
This is among the first trials on quercetin for bone health in postmenopausal women, so the conflicting signals warrant caution — the supplement may accelerate bone turnover rather than protect against loss.
Quercetin increased osteocalcin and PINP, markers of new bone formation, but also increased CTX, a marker of bone breakdown. This means it ramped up overall bone metabolism, but it's unknown whether the net effect is beneficial or harmful over the long term. Inflammatory markers like IL-6 and TNF-alpha decreased, but no improvements were seen in body composition or physical function.
Where this fits in the evidence
This is among the first studies we've indexed on Quercetin for Increased Osteocalcin Level — treat it as an early signal until more research accumulates.
The study
- Randomized Controlled Trial (RCT)
- 2025-03-07
- Journal of bone and mineral metabolism
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.