Boron for Arthritis
Boron shows a tentative, mostly positive signal for arthritis-related joint discomfort, but the evidence is thin, short-term, and heavily industry-funded, so it cannot be considered an established treatment. Major rheumatology bodies and clinics do not recommend it.
Why this grade7-layer evidence engine
The clinical base is genuinely weak (Tier C). It rests on a handful of small, short studies and conceptual papers: an ecological hypothesis comparing arthritis rates in high- versus low-boron regions (PMID 7889887), a tiny n=20 double-blind pilot mixing osteoarthritis and rheumatoid arthritis (PMID 2306060), and calcium-fructoborate work reporting reduced knee discomfort and inflammatory markers (PMID 24940052, PMID 22435474, PMID 21196370). There is no large RCT, systematic review, or meta-analysis.
Direction of effect leans positive, but confidence is limited by quality and conflict of interest. The pivotal calcium-fructoborate trials were largely sponsored by the ingredient's patent holder, triggering a high-industry-funding flag. NIH ODS calls boron a non-essential trace mineral that 'might' help bone and hormone function, while EFSA explicitly concluded a cause-and-effect relationship with joint function has not been established and set a 10 mg/day upper limit.
Mainstream clinical sources do not endorse boron for arthritis. The FDA sets no daily value, and Mayo Clinic, Cleveland Clinic, Harvard Health, the American College of Rheumatology, and the Arthritis Foundation make no mention of it; ACR instead points to omega-3, vitamin D, or turmeric. WHO advises against supplement intakes exceeding its tolerable level. The honest read: a plausible but unproven mineral, not a reliable arthritis remedy.
Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditable▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.402
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 無高階證據可裁決
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 1 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status