Boron for Bone Health Support

Boron alters mineral and hormone handling in small studies, but no fracture or density outcomes support it.

Overview

Boron alters mineral and hormone handling in small studies, but no fracture or density outcomes support it.

Verdict

Insufficient evidence

How It Works

Boron appears to reduce urinary calcium and magnesium excretion and influence vitamin D and steroid hormone metabolism.

Dosing & Protocol

Typical dose

Recommended dose: 3 mg/day was the studied dose; not recommended as a bone strategy
Expected timeframe: Not established - no bone density endpoint demonstrated

Protocol

measurement: DEXA at baseline and 2 years is the only meaningful bone endpoint
studied dose: 3 mg/day of boron in metabolic ward studies in postmenopausal women
evidence note: Verdict is insufficient - the supporting work is decades old and unreplicated
what happened: Those studies showed reduced urinary calcium and magnesium loss on a boron-repleted diet, but the findings were never extended to bone mineral density or fracture outcomes in modern trials
if you still trial it: 3 mg/day with food; do not exceed 20 mg/day from all sources
what actually protects bone: Adequate calcium and vitamin D, protein, progressive resistance and impact training, and prescribed treatment where a DEXA scan shows osteoporosis

Evidence

What the studies say

Early metabolic ward studies in postmenopausal women showed reduced mineral loss with 3 mg/day, but these findings have not been extended to bone density or fracture endpoints.

Pivotal role of boron supplementation on bone health: A narrative review

Score: 5/10

2020

systematic_review

Rondanelli M, Faliva MA, Peroni G +1 more

Available human studies suggest boron influences calcium, magnesium and vitamin D metabolism relevant to bone, but no dosing recommendation can be established from current data.

View source

Safety

Caveats

The tolerable upper intake level is 20 mg/day for adults; above this, boron causes nausea, vomiting, headache and, at high exposures, reproductive toxicity in animal studies. Avoid supplemental boron in pregnancy and breastfeeding. Avoid in hormone-sensitive cancer, given the effects on sex hormone binding globulin. People with kidney impairment clear boron poorly and should not supplement. Do not let boron delay a DEXA scan or prescribed osteoporosis treatment.

Less likely to help if

People with adequate dietary boron from fruit, nuts and vegetables, which covers most diets, and anyone with established osteoporosis needing drug therapy.

Medical Disclaimer

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Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.