Compound or practice · Supplement
Boron
A cheap ultra-trace mineral that nudges free testosterone, vitamin D, and inflammation markers — small, real, honest C.
- Overall grade
- Grade C
- Last revised
- 3
- graded outcomes
- 0
- references listed
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
3 at grade C — 3 graded rows
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- Free testosteroneEvidence grade C
Via lower SHBG
Smallmixed
- Vitamin D statusEvidence grade C
Slows catabolism
Smallmixed
- Inflammatory markersEvidence grade C
hs-CRP reductions reported
Smallmixed
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Free testosterone (grade C); Vitamin D status (grade C); Inflammatory markers (grade C).
Interactions
Documented pairings with supplements and medicines. A medicine on this list is a conversation for whoever prescribes it.
Vitamin DWorks together
Slows vitamin D breakdown — a mild 25(OH)D assist.
Tongkat AliWorks together
Common free-testosterone support stack.
The evidence in words
What it is
Boron is an ultra-trace element found in fruits, nuts, and legumes. It is not classically 'essential' but has measurable effects on mineral and hormone metabolism at supplemental doses.
How it works
Boron appears to lower sex-hormone-binding globulin (freeing testosterone and estrogen), slow vitamin D breakdown, and influence magnesium and calcium handling and some inflammatory markers.
What the evidence shows
Small human studies show ~10 mg/day can raise free testosterone and free estradiol, reduce inflammatory markers, and support vitamin D status. Effects are modest and the literature is thin, but it is cheap and well-tolerated — a reasonable minor addition, not a headline.
How to use it
6–10 mg/day. Often stacked with vitamin D and a testosterone-support goal.
Safety & interactions
Safe at these doses; toxicity requires far higher intakes. Vitamin D — Slows vitamin D breakdown — a mild 25(OH)D assist. Tongkat Ali — Common free-testosterone support stack.
Bottom line
A minor, low-cost lever for free testosterone and vitamin D metabolism. Real but small — a supporting act, not a star.
How it is used
As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.
- Standard
- 6–10 mg/day.
Goes with
- Vitamin DSlows vitamin D breakdown — a mild 25(OH)D assist.Evidence grade A
- Tongkat AliCommon free-testosterone support stack.Evidence grade C
Related reading
Entries that share this one's tags or conditions.
- Boron for Free testosteroneEvidence grade C — Via lower SHBGEvidence grade C
- Boron for Inflammatory markersEvidence grade C — hs-CRP reductions reportedEvidence grade C
- Boron for Vitamin D statusEvidence grade C — Slows catabolismEvidence grade C
- Boron: dosage and how to take it6–10 mg/day.Evidence grade C
Sources
This entry lists no references of its own.
Last revised . A grade is this entry's reading of the evidence, not medical advice.