Fasting / stress decimate gonadal steroidogenesis, with no effect on blood cortisol

A very interesting and very “controversial” (read: inconvenient truth) study, since it shows beyond reasonable doubt that even brief (4 days) fasting is a form of severe stress, at least when it comes to endocrine health. The study may also provide answers to various endocrine “mysteries” becoming more common among the male population of “developed” … Read more

Pregnenolone (P5) fully prevents testicular atrophy due to steroid (ab)use or high estrogen

I often get emails from bodybuilders, athletes and others who have used or currently use steroids and want to either protect themselves while using those steroids or want to recover after long-term usage. It is well-known that most performance enhancing steroids, including plain testosterone (T) or DHT, suppress gonadal function through a negative feedback mechanism … Read more

Fertility depends on metabollism (ATP), not age

As many of you know, there are two fundamental dogmas in reproductive medicine. One is that every woman is born with a fixed number of eggs and those cannot be replenished. The second one is that there is a biological fertility clock in every woman that inexorably ticks, and if the female does not have … Read more