When my testosterone levels were sitting at sub 300, my motivation just vanished. And ...

​Read More

From the mailbag… Hi Mark, I can’t ejaculate more than once anymore. I used ...

​Read More

A question about small testicles, finasteride and propecia, and the link with low testosterone ...

​Read More

Hi Mark, Do small testicles cause erectile dysfunction? Do small testicles – erectile dysfunction ...

​Read More

From the mailbag… Hi Mark, Are morning erections and testosterone related? I’ve stopped getting ...

​Read More

Do you have low sperm production? If so, then you’ve got testicular atrophy as ...

​Read More