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Boron — Frequently Asked Questions

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Frequently Asked Questions

Does boron really increase testosterone?

A small but notable study (Naghii et al., 2011, n=8) found 10mg boron daily for one week increased free testosterone by 28% and reduced estradiol. However, this was a very small study and longer-term data is limited. Boron may work by reducing sex hormone-binding globulin (SHBG), freeing more testosterone. Effects may be most pronounced in those with low baseline boron status.

How much boron should I take for bone health?

Studies showing bone-related benefits typically use 3-6mg daily. Boron supports bone health by reducing calcium excretion, enhancing vitamin D metabolism, and supporting estrogen levels (which protect bone density). It works best as part of a comprehensive bone support stack with calcium, vitamin D, and magnesium.

What foods are rich in boron?

Boron is abundant in plant foods. Top sources include prunes (1.2mg per serving), raisins (0.5mg), almonds (0.7mg per ounce), avocado (1.1mg), and apples (0.3mg). A diet rich in fruits, vegetables, nuts, and legumes typically provides 1-3mg daily, which is below the 3-6mg range shown beneficial in studies.

Full Boron Guide

References

  1. (). Comparative effects of daily and weekly boron supplementation on plasma steroid hormones and proinflammatory cytokines. Journal of Trace Elements in Medicine and Biology. DOI
  2. (). Short-term efficacy of calcium fructoborate on subjects with knee discomfort: a comparative, double-blind, placebo-controlled clinical study. Clinical Interventions in Aging. DOI
  3. (). Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women. FASEB Journal. DOI