Androgens boost, estrogen inhibits, anti-aging gene Klotho

This post has two main messages, based on the studies below. Namely, androgens (and especially DHT) potently increase the expression of the anti-aging gene Klotho while estrogens strikingly decrease its expression. Moreover, the more potent the androgen, in terms of androgen receptor (AR) agonism, the more robustly it increases Klotho. Conversely, the most potent the … Read more

Irritable bowel syndrome (IBS) caused by histamine and serotonin

I did not expect to see this statement in a mainstream science news outlet, but here it is below. I am starting to see a change in attitude towards serotonin but mainstream medicine is careful about its game. Somehow, the message about serotonin has now split into two separate, nonsensical ones – i.e. there are … Read more

Aromatase inhibitor (AI) + DHT combo may reverse kidney disease (CKD)

A truly great study for a number of reasons. First, it cites extensive evidence that male patients with diabetes (both types) have low androgens and high estrogen (estradiol). The association between this endocrine abnormality and the severity of diabetes is apparently quite strong, yet it is virtually unknown in endocrinology circles. In fact, there have … Read more

Topical DHEA has potent anti-aging effects on human skin

I often get emails in regards to possible interventions with anti-aging effects on skin. The study I usually quote is an old one (circa 1967) that did extensive tests on 200+ people with age range of 57-88 years residing in a retirement home, and demonstrated that topical testosterone (1%) cream had the most potent anti-aging … Read more

DHT is negatively associated with death from prostate cancer

Just a quick study that, despite being epidemiological, raises serious questions about the validity of the “androgen-driven” hypothesis of prostate cancer. If the assumption is that DHT is the primary driver of prostate cancer it is hard to come up with any plausible explanation of how the elevated levels of DHT in this study were … 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

Drop in androgen levels causes Parkinson Disease (PD), DHT reverses it

Yet another study demonstrating that many of the so-called chronic, degenerative and above all “mysterious” conditions often have quite a simple cause and, potentially, treatment. There is no need for mutated genes or complex interactions of genes with environment that nobody can decipher. Chronic stress leads to metabolic and endocrine changes that alone are sufficient … Read more

Testosterone does NOT impair empathy in men

I am sure most readers are quite familiar with the cliche that testosterone (T) is what drives stereotypical “boy behavior” – aggressiveness, carelessness, impulsive behavior, risk taking, cheating, and of course the militaristic attitude characterized by lack of (or reduced) empathy. As I mentioned in several previous posts, most of these behaviors seem to be … Read more

Drostanolone (a DHT isomer) may treat prostate cancer

The bad news for the DHT-driven theory of prostate cancer just keep piling on. There have been at least 3 human trials in the last 5 years demonstrating that the direct injection of testosterone (T) into the prostate can stop advanced, inoperable prostate cancer. Instead of admitting what is quite obvious at this point – … Read more