Testosterone administration in men leads to subjective improvements in mood, energy, libido, and overall well-being.

“And um and so double blind means neither the man nor the physician who was interacting with him had any idea whether he was getting the placebo or the testosterone. And that's of course really important for coming up with conclusions. And they concluded uh that in fact the men who were getting testosterone definitely reported feeling better, feeling more energetic, having a higher libido, and they definitely felt better overall. And and Julian said sort of the joke is that even though it was the men were supposed to be blind to which treatment they were getting, they always knew. They always knew when they were getting the testosterone because they felt so much better.”