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.
What is the Most Optimal Steroid Cycle? Bodybuilders frequently inquire about the optimal steroid cycles due to anabolic steroids significantly enhancing body composition. The appropriate response to this is contingent upon the individual’s objectives. For instance, a user who desires to reduce fat mass would utilize a different cycle compared to an individual who wants […]
In 1935, testosterone became the first-ever anabolic steroid, being extracted from a bull’s testicles. Testosterone later came to market in the ’50s via the pharmaceutical company Upjohn. In our experience, testosterone’s risk-to-reward ratio is perhaps the most optimal out of all anabolic steroids. This is one of the reasons why doctors issue TRT prescriptions to […]
Anavar (oxandrolone) is an anabolic steroid that simultaneously builds muscle and reduces fat mass. We have found Anavar to induce fewer toxic effects compared to other anabolic steroids. Both men and women have been known to cycle it. The Food and Drug Administration (FDA) authorized Anavar for the treatment of cachexia, with it increasing anabolism […]
Why Do Bodybuilders Cycle Dianabol? A Dianabol cycle is a common bulking protocol among bodybuilders. Dianabol (methandrostenolone) first appeared in bodybuilding during the Golden Era, when famous bodybuilders were known to cycle it in the offseason. Who Created Dianabol? Dianabol was first created in 1955 by Dr. John Ziegler, reportedly in an attempt to help […]
Ostarine is a selective androgen receptor modulator (SARM), and Cardarine is a peroxisome proliferator-activated receptor delta (PPARD) agonist. Certain weightlifters utilize these substances to stimulate anabolism and lipolysis. For men, an Ostarine and Cardarine stack is commonly administered during a cutting phase, with Ostarine producing mild increases in muscle hypertrophy, up to 10 pounds. Do […]
