Andrew Huberman· PhD
So let me give you a hypothetical. Somebody comes into your office, they do their blood work, and they have blood levels of, let's say, 600 nanogram per deciliter testosterone. Their estrogen is also in normal range. Everything else checks out, but they're complaining of slightly diminished libido, slightly poor recovery from workouts, maybe reduced motivation and drive, although no major depression. And you come to the conclusion that testosterone therapy-- not replacement, but testosterone therapy might be a good option to explore.