Dr. Thomas O'Connor is the first American board-certified internist to focus his medical practice specifically on the health and recovery of individuals who use anabolic steroids and androgens.
He founded Testosteronology®, a dedicated subspecialty of internal medicine that addresses steroid-induced hypogonadism and associated cardiovascular and metabolic concerns.
Dr. O'Connor has over 20 years of experience treating men and women with a history of anabolic steroid, SARM, and PED use. He has been a board-certified MD since 2005 and provides guidance on harm reduction methodologies.
Dr. O'Connor is a clinical instructor at the University of Connecticut School of Medicine and has been featured in various media publications, including Generation Iron, Dr. Phil, National Geographic, The New York Times, Muscle and Fitness, and others.
Dr. O'Connor also co-authored the largest survey on anabolic steroid use, which involved 2,385 men and was published in the peer-reviewed American Journal of Men’s Health. He holds active medical licenses in Connecticut and Florida.
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RAD-140, or Testolone, is a non-steroidal selective androgen receptor modulator (SARM) that replicates the anabolic effects of steroids by binding to the androgen receptor (AR) [1]. RAD-140 is the first SARM to exhibit neuroprotective properties in preclinical research. It achieves this by selectively stimulating the AR in neural tissue, activating the mitogen-activated protein kinase/extracellular signal-regulated […]
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Selective androgen receptor modulators (SARMs) are a class of investigational pharmacological agents that exhibit tissue-selective anabolic effects via their interaction with androgen receptors (AR) [1]. These compounds are currently being explored for their potential to promote muscle hypertrophy and improve physical performance without the unwanted side effects typically associated with anabolic-androgenic steroids (AAS), such as […]
Are Turinabol and Dianabol Similar Compounds? Turinabol (chlorodehydromethyltestosterone) and Dianabol (methandrostenolone) are very similar anabolic steroids from a chemical perspective, with Turinabol being a derivative of Dianabol. The main difference is that Turinabol possesses an additional 4-chloro modification of clostebol. This alteration modifies Turinabol’s pharmacological properties, resulting in reduced levels of aromatization. The objective of […]
