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The Anabolic Doc

The author is an Honours graduate of Queen's University Belfast in Ireland.

Dr Thomas D O'Connor, MD


The Anabolic Doc

The Anabolic Doc, Dr Thomas D O'Connor, MD's YouTube channel has been an invaluable resource to strength athletes, both men and women, who have used Performance Enhancing Drugs or who have been prescribed Hormone Replacement Therapy by their physicians. Dr O'Connor's book America on Steroids: A Time to Heal played a major role in quantifying and demystifying the vast amount of Anabolic Steroids use in the United States alone.

Dr O'Connor does not advocate the use of Anabolic Steroids but concentrates on harm reduction, education, individual anonymous case studies, the Pharmacokinetics of the plethora of Performance Enhancing Drugs available to strength athletes today and their side effects.

To get things in perspective, The European Congress of Endocrinology, states that:

'In the United States alone, between 3 to 4 million people use anabolic-androgenic steroids to increase their muscle mass. Worldwide, steroid users make up 3.3 per cent of the global population'

3.3 per cent of the global population using AAS amounts to approximately 7,794,798,739 people! Amazingly, there still resides a culture of turning a blind eye to these phenomena and a general misunderstanding of its significance among a lot of the medical professional community worldwide.

There is a severe dearth of hard data relating to most aspects of Anabolic-Androgenic Steroid use and its abuses. This may partly relate to its semi-underground culture/usage, clandestine laboratory manufacturing and the proverbial 'elephant in the living room' (or perhaps the gym is more apt).

In reality, most members of the public only become temporarily aware of Anabolic Steroids when major sports figures fail or are later exposed in 'doping' scandals, for instance, the infamous, alleged 'Duchess Cocktail' at the Sochi Olympics that supposedly contained Oxandrolone (Anavar), Trenbolone and Metenolone; or the infamous Lance Amstrong scandal when the elite cyclist was found by the USDAW of using HGH (Human Growth Hormone), diuretics and the blood-booster EPO (Erythropoietin). In reality, this is in fact the very tip of the iceberg. Visit any commercial or Powerlifting gym and the use of Performance Enhancing Drugs is so common it is a non-issue.

About The Anabolic Doc

The Anabolic Doc's online resume and intro to his channel, his adherence to the ethical treatment of AAS users and those on Hormone Replacement Therapy is impressive:

"Dr O'Connor is a board-certified internal medicine physician and clinical instructor at the University of Connecticut. He is a published academic researcher, the creator of a personalized healthcare web app (, the author of America on Steroids: A Time to Heal, and well known as the “Anabolic Doc,” due to his skill and experience in caring for men on TRT and anabolic steroids".

Dr O'Connor's advice and knowledge have been sought out by major media outlets and medical bodies due to his unique insight and expertise into the use and misuse of Performance Enhancing Drugs and TRT:

"His expertise in this area has been sought extensively by the world's top media outlets, including The New York Times, National Geographic, Generation Iron, Muscle and Fitness, Vice, and more. Dr O'Connor makes videos for education and harm reduction. He covers specific steroids, their side effects, and the impacts androgens have on the heart, kidneys, liver, sexual function, and other bodily systems. He also discusses TRT and provides information for patients and doctors to produce the best health outcomes possible. Please see our playlists page for videos organized by topic".

Dr O'Connor has an impressive, comprehensive list of videos analysing the potential harm and risk of using

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  • Oral Steroids
  • Intramuscular (IM) steroids
  • Both oral and IM Testosterones of various esters and half-lives
  • Selective androgen receptor modulators (SARMS)
  • Alleged 'gateway' substances such as Creatine
  • The effects of even low Androgenic Performance Enhancing Drugs on women
  • Testosterone Replacement Therapy in men
  • The high-risk Performing Enhancing Drugs, for instance, the various blends of Trenbolone which has been estimated to be up to three times the potency of Testosterone Propionate
  • Post-cycle Therapy substances such as Human chorionic gonadotropin (HCG), Tamoxifen, Clomid etc

  • Human Growth Hormone (HGH)

And much, much more.

  • Anabolic Doc - YouTube
    Dr. O'Connor is a board certified internal medicine physician and clinical instructor at the University of Connecticut. He is a published academic researcher...

Dr O'Connor is himself a Powerlifter and has treated some of the major names in not just immediately recognizable strength sports such as Powerlifting, Weightlifting or Bodybuilding but also NFL athletes and those from a variety of sports. In a candid interview, Dr O'Connor admits that before qualifying as a physician he experimented with Anabolic Steroids intermittently while on the Powerlifting circuit, although not at an elite level.

He still has an impressive bench press which would place him at the upper end of intermediate/advanced level lifting which as well as clinical knowledge allows one the insight into the drive to lift heavier and how, to a certain extent, it becomes a behavioural and/or psychological phenomena.

Safest and most dangerous steroids

Females and Performance Enhancing Drugs

Dr Thomas O'Connor's information videos are far from solely men-centric, he offers important information to female strength athletes. With the growth of CrossFit, it is clear from well-documented testimonies that females are using PEDs. As a generalization females in strength sports (not bodybuilding) are increasingly using PEDs with low androgenic properties, most typically Oxandrolone (Anavar) an oral steroid, Winstrol (Stanozolol) and Primobolan (Methenolone).

It is believed that females who take small doses and short cycles of low androgenic PEDS will not generally experience the masculinization that one sees in female bodybuilders who make heavy use of steroid stacks based on the various forms of Testosterone. However, even using low doses of for instance Oxandrolone even on short cycles can potentially cause masculinization, which in many cases are irreversible such as

  • Breast atrophy (reduction)
  • Clitoral enlargement
  • Alopecia (hair loss on the scalp)
  • Hair growth (on the body)
  • Laryngeal prominence (Adam’s apple)

Be aware and take time researching the potential side effects of any Performing Enhancing Drug. Make any decisions with advice from a medical professional and the knowledge readily available online.

CrossFit Women and Steroids


Introducing the Anabolic Doc App - Personalized Health Information for Men

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

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