Using hCG in Men on Testosterone Replacement Therapy (TRT) – A Clinical Review Introduction Exogenous testosterone replacement therapy (TRT) can profoundly suppress the hypothalamic-pituitary-gonadal (HPG) axis through negative feedback. By...
Thanks to Dr Sun for this diagram. Timeline details (left → right) YearProduct (image above/below the line)Form & delivery 1935-1937No product image—text block below the line: “Testosterone first synthesized” with a bullet list of early...
Again you heard it here first! Nelson's domain the one and only! Very informative webinar on the use of the newer oral TU formulations. Testosterone therapy has long been dominated by injectable and topical formulations, but the landscape...
From this thread: WARNING: Do not believe Internet "gurus" proclaiming no need to manage hematocrit on TRT - Excel Male TRT Forum Underlying Physiological Mechanisms Testosterone Replacement Therapy (TRT) and Erythrocytosis: Exogenous...
Briefing Document: Hormonal Regulation of Male Sexual Desire, Arousal, and Penile Erection Source Rastrelli, G., Antonio, L., Carrier, S., Isidori, A., & Maggi, M. (2025). The hormonal regulation of men’s sexual desire, arousal, and penile...
My question might be a basic one, but what is the purpose of Sex Hormone Binding Globulin (SHBG)? In general terms I appreciate that SHBG binds to Total Testosterone (along with Albumin) to give us Free Testosteron. My question is not about...
In an insightful interview from the "Dr. Gabrielle Lyon" YouTube channel, Dr. Larry Lipshultz, a renowned expert in male reproductive health, discusses the alarming global decline in male fertility, attributing it to factors such as obesity...
Briefing Document: Estradiol in Men on TRT Source: Excerpts from "High Estradiol in Men on TRT: What to Do" by Nelson Viegel (excelmale.com) 1. The Role and Importance of Estradiol in Men Core Idea: Estradiol, often misconstrued as a solely...
* Probably the most challenging forms to quantify, due to their relatively low concentrations are the so called free forms. The free forms of all the hormones (shown in Figs. 1–3) are the hormones not bound to proteins, or conjugated to other...
Download slides (from my book "Beyond Testosterone"): Estradiol in Men Slides Estradiol in Men: The Stigma In the 2014 film The Other Woman, Cameron Diaz, Leslie Mann, and Kate Upton, portray three jilted females who discover they are...
Managing the Testosterone-to-Estradiol Ratio in Men on TRT Introduction Testosterone replacement therapy (TRT) in hypogonadal men often leads to an increase in estradiol (E2) levels due to the aromatization of testosterone. This alters the...
I am very pleased to announce that I finally finished my full color 427-page booK: The Table of Contents of "Beyond Testosterone" is meticulously organized into detailed sections, each addressing key aspects of testosterone therapy...