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Boron, SHBG & Free Testosterone | Male Fertility

✚ Male Fertility Reference

Boron Deficiency

A trace mineral that reduces SHBG and raises free testosterone — almost universally ignored

Low
Prevalence
Common — almost zero public awareness
Affected Men
Most Western men consume well below optimal amounts
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Average dietary boron intake (mg/day)

Overview

Boron is a trace mineral rarely discussed in mainstream nutrition yet with meaningful reproductive health implications. Studies demonstrate that boron supplementation significantly reduces SHBG, increases free testosterone, and may enhance vitamin D utilisation. It also has anti-inflammatory and antioxidant properties relevant to sperm health. Dietary sources are concentrated in fruits, vegetables, and nuts — foods underrepresented in modern Western diets.

How It Affects Fertility

  • Elevated SHBG in deficiency reduces free testosterone availability
  • Reduced antioxidant protection for developing sperm
  • Impaired vitamin D utilisation

Symptoms to Watch For

  • Generally asymptomatic — subtle hormonal effects only
  • Symptoms overlap with low free testosterone and elevated SHBG

What You Can Do

  1. 1 Supplementation: 3–10mg elemental boron daily (as boron glycinate or sodium borate)
  2. 2 Food sources: raisins, prunes, avocados, almonds, apricots
  3. 3 Particularly valuable if SHBG is elevated on testing
  4. 4 Pairs well with vitamin D and magnesium for comprehensive hormonal support

This content is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before making health decisions.