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Exercise Advice From Physicians
A survey of primary care physicians in the US showed that only 38% of family practitioners and 48% of internists advised more than 60% of their patients about the benefits of aerobic exercise. Advice regarding strength training was provided even less often. (Clin J Sport Med, Jan. 2000)


Anabolic Steroids

Author: Stan Reents, PharmD
Original Posting: 05/06/2007 07:01 AM
Last Revision: 01/15/2016 07:42 AM

It seems "steroids" (ie., anabolic steroids) just won't go away. In 2004 and 2005, anabolic steroids again made the news. Here are 3 of the more high-profile cases during the past 20 years:


In 1988, at the Seoul Olympics, Canadian sprinter Ben Johnson beat Carl Lewis in the 100-meter dash to win the gold medal. Several days later, it was reported that Johnson tested positive for stanozolol, a very potent anabolic steroid. Even though it was well-known that Russian and East German athletes had been abusing steroids for years, Johnson's violation caused the sporting world to sit up and take notice.


In March of 2002, an anabolic steroid known as "norbolethone" was discovered in a urine sample from an athlete. Norbolethone was studied by Wyeth Pharmaceuticals from 1967 to 1971 but never marketed in the US due to its toxicity. Thus, its reappearance 30 years later was highly unusual.

In June of 2003, an anonymous coach finds a syringe of clear liquid and mails it to USADA for testing. A previously unknown steroid -- a "designer" steroid -- is discovered. Its chemical name is tetrahydrogestrinone (THG), but on the street, it is known by the name "The Clear".

It turns out that THG and norbolethone are very closely related. Also, as with stanozolol, the anabolic-to-androgenic ratio for norbolethone is very high, making both drugs very desirable as performance-enhancing substances.

Don Catlin, MD, at UCLA, then went to work developing an assay to detect THG. Even though THG was never marketed commercially, suddenly, athletes started turning up positive: Regina Jacobs, an American middle-distance runner, and UK sprinter Dwain Chambers, to name a few. Chambers admitted he was using supplements from BALCO labs, a Burlingame, California company. THG (aka "The Clear") was traced to this lab.

On September 3, 2003, BALCO was raided and its founder, Victor Conte, was arrested. Conte argued that THG was not a steroid, even though, on October 28, 2003, the FDA issued a press release stating that THG was, in fact, an unapproved new drug, and not a dietary supplement. Research published in May 2004 showed that THG was unquestionably a potent anabolic steroid (Death AK, et al. 2004). Then, on December 3, 2004, during a TV interview on ABCs 20/20, Conte implied that Marion Jones, Barry Bonds, and other elite athletes were recipients of substances originating from BALCO.


In February 2005, Jose Canseco's tell-all book Juiced: Wild Times, Rampant 'Roids, Smash Hits, and How Baseball Got Big was published. This book generated tremendous controversy. At congressional hearings in March 2005, baseball greats such as Mark McGwire, Jason Giambi, and Rafael Palmeiro were forced to defend their integrity. Then, in August 2005, Palmeiro was reported to have tested positive for....stanozolol.

How did competitive sports get so contaminated with anabolic steroids? A brief history of anabolic steroids follows, but, first, some definitions....


In the world of chemistry and medicine, there are essentially 3 general groups of drugs that can be described as "steroids":

Anabolic Steroids (androgens): This group includes testosterone and all of its derivatives. Testosterone is secreted by the testes and adrenals in males and by the ovaries and adrenals in females.

Corticosteroids (glucocorticoids): These hormones are produced by the adrenal gland and are secreted when the body experiences stress. Glucocorticoids such as cortisol and hydrocortisone can also be called "catabolic" steroids because their actions on many tissues are opposite those of the anabolic steroids.

Female Steroids (estrogens and progestins): Like testosterone, estrogens and progestins can be found in both sexes. Testosterone is metabolized to estradiol, a specific type of estrogen.

Steroid Precursors (androstenedione, DHEA): A 4th category of substances deserves mention here, too. "Steroid precursors" are molecules that, once inside the body, are converted into testosterone. Androstenedione, or "andro" as it is commonly known, and DHEA were once sold as a dietary supplements, but the attitude towards these supplements has changed (see below). Andro is now regarded as a banned substance by many sports governing organizations.

For this discussion, we are only concerned about anabolic steroids.


Testosterone was first isolated in 1935. However, testosterone is not absorbed when taken orally, so pharmaceutical companies produced derivatives that could be given by IM injection or orally. In 1940, methyltestosterone (Android-10®) was the first oral derivative to be marketed, but it had only about 20% the anabolic effect of injectible testosterone (Kochakian CD. 1993).

"Anabolic" effects include the muscle- and strength-building properties, whereas "androgenic" effects include the masculinizing effects. Obviously, increasing the anabolic effects while diminishing the androgenic effects of these steroids is desirable to athletes looking for an unethical advantage.

Over the ensuing 20-25 years, in an effort to produce compounds with higher and higher anabolic potency and minimal androgenic properties, other oral derivatives were marketed. Fluoxymesterone (Halotestin®) was marketed in 1956, followed by oxymetholone (Anadrol®) in 1960, followed by oxandrolone (Oxandrin®) in 1964. Each of these 3 oral derivatives had more potent anabolic effects than the previous one, yet all 3 also had less androgenic effects than methyltestosterone.

Then, stanozolol (Winstrol®) was marketed in 1962. Its anabolic effects were roughly 10 times the potency of methyltestosterone, while its androgenic effects were about one-third that of methyltestosterone (Kochakian CD. 1993). Stanozolol was a dream-come-true for athletes looking for a performance-enhancing drug. Stanozolol was removed from marketing in the US in 2003, however, there are reports that NFL players were still obtaining it during the 2003-2004 season.

And, somehow, it got into Rafael Palmeiro's body in 2005, though, apparently, he doesn't know how that happened....

Professional athletes need to realize the impact they have on young athletes. The Centers for Disease Control and Prevention (CDC) reported in its 2000 Youth Risk Behavior Surveillance survey that among high school seniors, 6.4 percent of males and 3.3 percent of females admitted using steroids at least once. If more of these young athletes were aware of the potential dangers, it's likely fewer would ever experiment with these drugs.


Appearance: While some athletes abuse steroids in hopes of increasing their athletic performance, many others abuse steroids to enhance their physique. Unfortunately, while their muscles may get bigger, they may experience an increase in acne. Severe acne can scar the skin permanently.

In men prone to balding, abuse of steroids may increase hair loss. Women who use steroids with androgenic properties will see an increase in growth of secondary hair (facial hair, forearm hair, etc.).

Psychiatric Effects: Surveys of athletes clearly show an increase in anxiety, hostility, aggression, and suspiciousness during phases of steroid use (Parrott AC, et al. 1994), especially with methyltestosterone. In one study of intramuscular testosterone cypionate, psychiatric symptoms were apparent within 6 weeks, though only a small percentage of men were affected (Pope HG, et al. 2000).


When steroids are used continuously for months and months, more serious side effects can occur:

Appearance: In men, chronic abuse of anabolic steroids can cause the breasts to enlarge. This is known as gynecomastia. In women, anabolic steroids will cause the voice to deepen, the clitoris to enlarge, and the breasts to shrink. Many of these effects are permanent (Kibble MW, et al. 1987).

Liver: Liver tumors are possible when orally-administered anabolic steroids are used chronically (Farrell GC, et al. 1975).

Heart: Chronic abuse of steroids can produce a variety of detrimental effects on the heart, including: increased left ventricle size and increased thickness of the ventricular septum (DePiccoli B, et al. 1991) and dilated cardiomyopathy (Ferrera PC, et al. 1997). Once these anatomical changes exist, other cardiac problems are possible: cardiac arrhythmias (Nieminen MS, et al. 1996) and sudden death (Dickerman RD, et al. 1995) have been reported in weight lifters who abuse anabolic steroids.

Cardiovascular: Chronic use of anabolic steroids increases the risk of cardiovascular events. It is thought that there are at least 4 mechanisms (Melchert RB, et al. 1995):

  • atherogenesis (ie., harmful effects on blood lipids)
  • thrombosis (ie., increased tendency for blood clotting)
  • vasospasm (ie., sudden constriction of the coronary arteries)
  • direct myocardial injury (ie., effects on the heart tissue)

These effects can persist long after use has been discontinued (Sullivan ML, et al. 1998.)

Reproductive System: Men who chronically abuse anabolic steroids will develop smaller testicles and decreased fertility. This is due to a disruption in the normal balance of reproductive hormones in the body.

If these side effects and toxicities don't scare you away from using (abusing) steroids, then read some of the personal tragedies at


To put it simply, athletes use (abuse) anabolic steroids because they want to win. But, in an effort to win, in reality, they lose.

University of Iowa wrestling coach and Olympic gold medalist Dan Gable explains it like this: "Besides the health effects, what you lose when you use steroids is mental toughness. The key to victory is that the strongest mind wins. You can get physical strength with steroids, but you lose the mental toughness (you would have gained) from brutal hard work. Steroids hurt mental toughness by serving as a crutch." (Yesalis CE, et al. 1998).


Q: Do anabolic steroids enhance athletic performance?

ANSWER: Yes, but only in certain events. In general, anabolic steroids enhance muscle strength and muscular power. Thus, they enhance performance in sports/events that require explosive power such as football, wrestling, shot put, 100-meter dash, etc. They do not appear to be beneficial in events such as marathon, cycling, etc. However, their ability to boost muscle protein metabolism suggests that anabolic steroids might enhance training and recovery in any athlete.

Q: Will I die if I take anabolic steroids?

ANSWER: While you are not likely to die from a single dose of an anabolic steroid like you might if you injected heroin or cocaine, abuse of anabolic steroids promotes heart disease, worsens the blood lipid profile, and increases the risk of various cancers. Thus, in that regard, anabolic steroids can "contribute" to death. The more important question is: what is the justification for taking any performance-enhancing drug? Anabolic steroids are banned substances and have serious short-term and long-term side effects. In addition, you could get arrested for possessing a controlled-substance.

Q: Are steroid precursors such as androstenedione as harmful as anabolic steroids?

ANSWER: The hoopla surrounding androstenedione (also known as "andro") is over. This supplement was popular in 1999-2000, but, on March 11, 2004, the FDA ordered an end to all sales of androstenedione and sent warning letters to 23 andro manufacturers to cease sales of this product. The marketing of androstenedione products is currently prohibited in the US. Athletes need to realize that androstenedione and other steroid precursors haven't lived up to the hype that they can enhance performance. Further, many sports governing bodies have banned the use of steroid precursors and an athlete risks disqualification by using these supplements.


Web sites that offer good information on anabolic steroids include: is an initiative by the National Institute on Drug Abuse and several partners to try and educate the public regarding the dangers of anabolic steroids., a site maintained by the Department of Health and Human Services, contains information on not only steroids, but a variety of health and fitness topics. is the effort of one family's response to the suicide death of their son, Taylor, which is believed to be related to steroid abuse. This web site is not only a plea to those contemplating abusing steroids, but is a good resource for those looking for information on these dangerous drugs.

An excellent book on anabolic steroids is The Steroids Game: An Expert's Inside Look at Anabolic Steroid Use in Sports by noted authority Charles Yesalis, ScD. He is also the author of the academic text Anabolic Steroids in Sport and Exercise. Both texts are published by Human Kinetics (


Stan Reents, PharmD, is available to speak on this and many other exercise-related topics. (Here is a downloadable recording of one of his Health Talks.) He also provides a one-on-one Health Coaching Service. Contact him through the Contact Us page.


Death AK, McGrath KCY, Kazlauskas R, et al. Tetrahydrogestrinone is a potent androgen and progestin. J Clin Endocrinol Metab 2004;89:2498-2500. Abstract

DePiccoli B, Giada F, Benettin A, et al. Anabolic steroid use in body builders: an echocardiographic study of left ventricle morphology and function. Int J Sports Med 1991;12:408-412. Abstract

Dickerman RD, Schaller R, Prather I, et al. Sudden cardiac death in a 20-year-old body builder using anabolic steroids. Cardiology 1995;86:172-173. Abstract

Farrell GC, Joshua DE, Uren RF, et al. Androgen-induced hepatoma. Lancet 1975;1(7904):430-432. Abstract

Ferrera PC, Putnam DL, Verdile VP. Anabolic steroid use as the possible precipitant of dilated cardiomyopathy. Cardiology 1997;88:218-220. Abstract

Kibble MW, Ross MB. Adverse effects of anabolic steroids in athletes. Clin Pharm 1987;6:686-692. Abstract

Kochakian CD. Anabolic-androgenic steroids: a historical perspective and definition. Chapter 1 in: Anabolic Steroids in Sport and Exercise, Yesalis CE, ed., Human Kinetics, Champaign, IL, 1993, pp. 3-33.

Melchert RB, Welder AA. Cardiovascular effects of androgenic-anabolic steroids. Med Sci Sports Exerc 1995;27:1252-1262. Abstract

Nieminen MS, Ramo MP, Viitasalo M, et al. Serious cardiovascular side effects of large doses of anabolic steroids in weight lifters. Eur Heart J 1996;17:1576-1583. Abstract

Parrott AC, Choi PYL, Davies M. Anabolic steroid use by amateur athletes: effects upon psychological mood states. J Sports Med Phys Fitness 1994;34:292-298. Abstract

Pope HG, Kouri EM, Hudson JI. Effects of supraphysiologic doses of testosterone on mood and aggression in normal men. Arch Gen Psych 2000;57:133-140. Abstract

Sullivan ML, Martinez CM, Gennis P, et al. The cardiac toxicity of anabolic steroids. Prog Cardiovasc Dis 1998;41:1-15. Abstract

Yesalis CE, Cowart VS. The Steroids Game: An Expert's Inside Look at Anabolic Steroid Use in Sports, Human Kinetics, Champaign, IL, 1998.


Stan Reents, PharmD, is a former healthcare professional. He is a member of the American College of Sports Medicine (ACSM) and holds current certifications from ACSM (Health & Fitness Specialist), ACE (Health Coach) and has been certified as a tennis coach by USTA. He is the author of Sport and Exercise Pharmacology (published by Human Kinetics) and has written for Runner's World magazine, Training and Conditioning, Club Solutions, and other fitness publications.

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