Turkestrone

Turkesterone (also rendered “terkesterone” in the transcript) is described as a plant-derived ectosteroid, found in sources such as spinach. One 2019 study discussed in the episode reported increases in muscle mass, strength, and hypertrophy over a 10-week intervention, but Huberman emphasized that those were the study authors’ conclusions—not his own endorsement. 1

A physician guest separately described turkesterone as activating the estrogen beta receptor and noted possible water retention; the discussion did not establish it as a reliable testosterone booster. 2