Boron may play a supportive role for optimizing testosterone.
The claims about ashwagandha, fenugreek, and Tongkat Ali are generally supported by moderate evidence for specific benefits, though not all claims are addressed in the transcript. The claim about boron affecting SHBG levels is overstated, as evidence is limited and not robust.
“Effective for various benefits”
Ashwagandha has moderate evidence supporting benefits for sleep quality, stress reduction, and physical performance.
“Effective for testosterone and other benefits”
Fenugreek has low evidence supporting an increase in total serum testosterone and breast milk volume.
“Effective for testosterone and sexual function”
Tongkat Ali has moderate evidence for modest increases in free testosterone and libido improvements.
“Suppresses SHBG levels and liberates free testosterone”
Evidence for boron's effect on SHBG and free testosterone is limited and not robust, with small studies showing mixed results.
Boron may play a supportive role for optimizing testosterone. Supplementing with 6-12 mg per day can increase free testosterone (not total testosterone) by suppressing SHBG. It’s not something typically consumed in the diet, but you can find a multivitamin that has it. Note that most studies to date are in animals or mechanistic and your results may vary.