2/5
Weak
evidence
Testosterone booster evidence brief
Boron
Bodybuilding trial data do not support strength, lean-mass, or testosterone claims in healthy male lifters.
Headline Finding
7-week bodybuilder trial: 2.5 mg/day changed neither testosterone, lean mass, nor strength.
Dose Context
Supplement doses vary by product and are not a proven hormone intervention.
Important Caveat
Biomarker changes in small or non-athlete studies do not translate into muscle-gain or strength outcomes.
Source Drawer
Linked Research
- Trial Male bodybuilder trial
- Trial Male trial full text
- Systematic review Mineral performance systematic review
- Full text Mineral review full text
- Trial Steroid hormone pilot trial
How To Read This Rating
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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