Allopregnanolone found safe, may slow brain atrophy from Alzheimer’s

A great new study, which is one of the very few to examine the safety and effectiveness of allopregnanolone in humans. The trial was conducted in patients with Alzheimer Disease (AD) and aimed to establish the safety of various doses of once-weekly allopregnanolone administration, as well as any potential benefits on brain morphology in AD … Read more

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

Muscle weakness / wasting linked to poor mitochondrial function

A study that once again illustrates the central principle of bioenergetics – structure and function cannot be separated. They are interdependent at every level. In this specific case, the “structural” pathology is muscle weakness and wasting (sarcopenia, cachexia, etc). Most doctors, when evaluating such condition, will look for structural problems such as genetic mutations, trauma, … 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

Estrogen and cortisol, not androgens, suppress immunity

There is a very famous theory in reproductive biology still considered the dominant one in its field. Namely, males have to accept a trade-off between androgen levels and immunity. It is known as the immunocompetence handicap hypothesis (ICHH). Higher androgen levels, the theory goes, allow the male to (physically) outcompete other males around him for … Read more