Author Archive

Dr. Thomas O'Connor, MD, PA

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.

As a potential medical treatment for cachexia, researchers developed selective androgen receptor modulators (SARMs) to mimic the muscle-building effects of anabolic steroids. Thus, SARMs’ main function is to increase anabolism. SARMs possess lipolytic properties due to stimulation of androgen receptors. We have found that most SARMs can reduce overall body fat by 2–3% from a […]

SARMs (selective androgen receptor modulators) have recently been formulated as a potential medicinal alternative to anabolic steroids. Scientists’ main objective when synthesizing SARMs was to replicate the anabolic effects of steroids without any androgenic side effects. This has been successfully achieved via the mechanism of tissue selectivity, where SARMs bind to cells that promote anabolism […]

Summary: The best SARM for beginners with the fewest side effects is widely regarded as Ostarine. The best SARM for building lean muscle is believed to be RAD-140. The best SARM for cutting and burning fat could be Ostarine. However, Cardarine is a more effective fat-burning compound, but it is technically a peroxisome proliferator-activated receptor […]

Non-steroidal selective androgen receptor modulators (SARMs) have become more common in the realm of bodybuilding since their recent formulation in the 1990s. Are SARMs Legal? As of 2022, SARMs are currently 100% legal worldwide (excluding Australia), when utilized for research purposes. In Australia, SARMs are classified as Schedule 4 substances, so they are illegal to […]

Selective androgen receptor modulators (SARMs) are currently being studied as a potential anabolic treatment in medicine. Chemical modifications of testosterone, known as steroidal SARMs, were formulated in the 1940s as a means to induce anabolism (without androgenicity) in specific tissues. When anabolic steroids (specifically testosterone) were first medicinally approved in 1939, their androgenic side effects […]