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Most anabolic steroids act by activation of androgen receptors. Results of androgen receptor activation are traditionally divided into anabolic and virilizing effects.
Examples of anabolic effects:
Examples of virilizing effects:
Many androgens are metabolized to compounds which also cross-react with estrogen receptors, producing an additional set of (usually) unwanted effects:
A hormone with purely anabolic effects would have many uses, but in many cases the usefulness is limited by unwanted virilizing effects. Many of the synthetic anabolic steroids were produced in an attempt to find molecules that produced a higher degree of anabolic rather than virilizing effects.
There is still much to be said about steroids from the medical perspective.
During the 1990s, anabolic steroid abuse became a national concern in the United States. These drugs are used illicitly by weight lifters, bodybuildersBodybuilding is the sport of developing muscle fibers through the combination of weight training, increased caloric intake, and rest. Professional bodybuilders display their physiques to a panel of judges, who assign points. Although initially a male-only, shot puttersAthletics The shot put is an athletics (track and field) event involving "putting" (throwing in a pushing motion) a heavy metal ball, also called the shot, as far as possible. Competitors take their throw from inside a circle 2. 1 metres (7 feet) in diame, long distance runnersRunning is by definition the fastest means for an animal to move on foot. It is defined in sporting terms as a gait in which at some point all feet are off the ground at the same time. Running is a form of aerobic exercise. Jogging Jogging is a type of sl, cyclistsCycling is a recreation, a sport, and a means of transport across land. It involves riding bicycles, unicycles, tricycles, and other human powered vehicles (HPVs). As a sport it is governed internationally by the Union Cycliste Internationale in Switzerla, professional baseballBusch Stadium in Saint Louis, Missouri. Baseball is a team sport in which a small hand-sized ball is thrown and hit with a bat. Scoring involves running and touching markers on the ground called bases, hence the name. The ball itself is also called a base players and others to give them a competitive advantage and improve their physical appearance.
According to the 1999For the album by Prince, see 1999 (album 1999 is a common year starting on Friday (see link for calendar), and was designated the International Year of Older Persons by the UN. Events Kosovo War Former child star Gary Coleman files for bankruptcy Y2K prep Monitoring the Future Study, the percentage of eighth, tenth, and twelfth graders who reported using steroids at least once in their lives has increased steadily over the past four years (an average of 1.8 percent in 19961996 was a leap year starting on Monday (see link for calendar), and was designated the International Year for the Eradication of Poverty''. Events January January 5 Hamas operative Yahya Ayyash is killed by an Israeli-planted booby-trapped cell phone Jan, 2.1 percent in 19971997 was a common year starting on Wednesday (see link for calendar), and was designated the International Year of the Reef''. Events January January 3 NBC's Today Show Bryant Gumbel signs off for the last time January 8 Mister Rogers receives a star on t, 2.3 percent in 1998, and 2.8 percent in 1999). In addition, steroid use to enhance athletic performance is no longer limited to high school males; a 1998 Pennsylvania State University study found that 175,000 high school girls nationwide reported taking steroids at least once in their lifetime.
Concerns over a growing illicit market and prevalence of abuse combined with the possibility of harmful longterm effects of steroid use led the United States Congress in 1991 to place anabolic steroids into Schedule III of the Controlled Substances Act (CSA). The CSA defines anabolic steroids as any drug or hormonal substance chemically and pharmacologically related to testosterone (other than estrogens, progestins, and corticosteroids) that promotes muscle growth. Most illicit anabolic steroids are sold at gyms, competitions, and through mail operations. For the most part, these substances are smuggled into the United States. Anabolic steroids commonly encountered on the illicit market include: boldenone ( Equipoise), ethlestrenol (Maxibolin), fluoxymesterone (Halotestin), methandriol, methandrostenolone (Dianabol), methyltestosterone, nandrolone (Durabolin, DecaDurabolin), oxandrolone (Anavar), oxymetholone (Anadrol), stanozolol ( Winstrol), testosterone (including sustanon), and trenbolone (Finajet). In addition, a number of counterfeit products are sold as anabolic steroids.
Physical side effects include elevated blood pressure and cholesterol levels, severe acne, premature baldness, reduced sexual function, and testicular atrophy. In males, abnormal breast development ( gynecomastia) can occur. In females, anabolic steroids have a masculinizing effect, resulting in more body hair, a deeper voice, smaller breasts, masculinized or enlarged clitoris, and fewer menstrual cycles. Several of these effects are irreversible. In adolescents, abuse of these agents may prematurely stop the lengthening of bones, resulting in stunted growth. Serious medical illness can result from external hormone use. Enlargement of the heart (the heart is a muscle and thus affected by the muscle-building qualities of the hormones) is a risk, which increases the chance of a cardiac event occurring in later life. Another major health risk is long-term liver damage, particularly if the anabolic steroid compound is 17-alpha-alkylated .
Anabolic steroids are believed to have been inadvertently discovered by German scientists in the early 1930s, but at the time the discovery was not considered significant enough to warrant further study. In the 1950s, however, scientific interest was rekindled, and methandrostenolone (Dianabol) was approved for use in the United States by the federal Food and Drug Administration in 1958 after promising trials had been conducted in other countries.
On October 22nd, 2004, President Bush signed into law the Anabolic Steroid Control Act of 2004 (S.2195). The bill was written to become effective in 90 days, which as of this writing would appear to be January 20, 2005. This new legislation places both anabolic steroids and prohormones on a list of controlled substances.