Boron
Trace mineral with preliminary evidence for bone, joint, and hormone-modulating effects, no EFSA-authorised claim; safety considerations at high doses.
Why
Boron is a trace mineral with preliminary evidence for effects on bone density, joint pain, and steroid hormone metabolism. EFSA has not authorised a specific health claim, but several mechanistic studies and small trials (Nielsen 1987, Travers 1990, Pizzorno 2015) suggest benefit in postmenopausal bone and OA. EU has set a tolerable upper intake level of 10 mg/day; reproductive toxicity at higher chronic doses is documented in animal studies.
How it works
Modulates steroid hormone metabolism, small RCTs report increased free testosterone and oestradiol in deficient adults. Cofactor for hydroxylation of vitamin D and steroid hormones. Anti-inflammatory effects in joint tissue.
Expected onset · Bone-marker changes over months; hormone effects within 4–6 weeks (when present)
How to take
Dosage
3–10 mg/day. Stay well within the EU upper limit of 10 mg/day.
Timing
Once daily with food
On the label
Boron citrate, glycinate, or aspartate. Stated elemental boron per dose. Some products combine with calcium and magnesium for bone formulas.
Ideal for
Adults with osteopaenia/osteoporosis or osteoarthritis seeking nutrient-mineral adjuncts under guidance, staying well within the safety upper limit.
Safety
Evidence
Nielsen 1987 FASEB J open trial: boron repletion in deficient postmenopausal women increased serum oestradiol and ionised calcium retention. Preliminary, RCTs exist in non-tier-1 journals but are small or short-duration. No Cochrane review, EMA monograph or EFSA-authorised claim covers the indication.
Preliminary, RCTs exist in non-tier-1 journals but are small or short-duration. No Cochrane review, EMA monograph or EFSA-authorised claim covers the indication.
Where to get it
Shop Boron on AmazonSponsored · As an Amazon Associate, Healicus earns from qualifying purchases.