What Are Steroids and Why Do People Use Them?

Steroids are a broad class of chemical compounds that include natural hormones such as cortisol (a stress hormone) and testosterone (the male sex hormone). In everyday language, “steroids” often refers to anabolic–androgenic steroids (AAS) – man-made drugs that mimic testosterone. These compounds have two main effects: the anabolic effect (muscle and tissue building) and the androgenic effect (development of male sexual characteristics). For example, the U.S. Drug Enforcement Administration (DEA) notes that anabolic steroids are synthetic variants of testosterone, commonly abused to promote muscle growth, enhance athletic performance, and improve physical appearance. While doctors may prescribe anabolic steroids for certain conditions, these drugs are also widely misused by people seeking muscle or performance gains.

Types of Steroids

Steroids actually encompass several categories of hormones. In medicine and sports, two major types are highlighted:

• Anabolic–androgenic steroids (AAS): These are synthetic testosterone-like hormones used to build muscle and male characteristics. Examples include testosterone derivatives such as testosterone cypionate or nandrolone. Athletes and bodybuilders often refer to these simply as “steroids.”
• Corticosteroids: These synthetic hormones resemble cortisol, a natural hormone that reduces inflammation. Doctors prescribe corticosteroids (like prednisone) to treat asthma, allergies, arthritis, and other inflammatory conditions. They have very different uses from anabolic steroids.

Anabolic steroids come in several forms (pills, injections, gels, etc.) and are often packaged as shown above

In addition to these, the body produces other steroid hormones (such as estrogen and progesterone), but those are usually not called “steroids” in the context of performance enhancement. In summary, general “steroids” can mean either inflammatory drugs (corticosteroids) or muscle-building hormones (anabolic steroids)

How Do Steroids Work?

Anabolic steroids work by entering the cells and binding to androgen receptors in muscle and other tissues. This binding activates genes that drive protein synthesis and muscle cell growth. In essence, they tell your muscles to grow more cells and retain more nitrogen, which leads to larger muscle size and increased strength. StatPearls explains that both natural testosterone and synthetic anabolic steroids “mediate their effects by binding to and activating androgen receptors” in skeletal muscle, which increases muscle DNA synthesis and growth. In practice, this means that anabolic steroids allow the body to build more muscle and recover faster from hard workouts than it could on its own.

Corticosteroids work differently. They mimic cortisol, signaling the immune system to dial down inflammation. By doing so, corticosteroids reduce swelling, pain, and allergic reactions. (This anti-inflammatory effect is why corticosteroids are common treatments for asthma, eczema, and arthritis.) In contrast, anabolic steroids do not have these anti-inflammatory effects; instead, they specifically boost muscle and bone tissue.

Medical Uses of Steroids

Steroids have legitimate medical applications. Corticosteroids are prescribed for a wide range of inflammatory and autoimmune conditions. For instance, asthma patients often use inhaled corticosteroids to control airway inflammation, and people with rheumatoid arthritis may take oral corticosteroids to reduce joint inflammation.

Anabolic steroids (testosterone-like hormones) are approved for certain hormone-related conditions. The FDA has approved them to treat male hypogonadism (where the body produces little or no testosterone) and delayed puberty in boys. They are also used in some female hormone conditions (for example, certain types of breast cancer and endometriosis). In practice, doctors may also use anabolic steroids off-label to help patients with muscle-wasting illnesses (like AIDS or cancer-related cachexia), certain types of anemia, or severe weight loss. In these cases, the goal is to rebuild muscle mass or stimulate appetite.

Key medical uses of steroids include:

• Treating hormonal deficiencies (e.g. testosterone for low testosterone in men)
• Reducing inflammation (e.g. corticosteroids for asthma, allergies, or autoimmune diseases)
• Managing chronic conditions (e.g. anemia, bone marrow disorders, and some cancers) through improved blood production and muscle maintenance.

Each of these uses is done under medical supervision with carefully controlled doses. In these contexts, steroids can be very effective and are used as standard therapies.

Why Do People Use Steroids?

People use steroids for two main reasons: medical treatment and performance/appearance enhancement.

• Medical reasons: Doctors prescribe steroids to address specific health problems, as described above. For example, a middle-aged man with documented low testosterone may receive anabolic steroid therapy to restore normal hormone levels. Likewise, someone with severe asthma might use corticosteroid inhalers to keep symptoms under control. In these situations, the use of steroids is legal and managed by healthcare professionals.
• Non-medical (performance and appearance) reasons: Many people take anabolic steroids without a prescription in an attempt to improve their physique or athletic abilities. According to the Cleveland Clinic, roughly 3 to 4 million Americans use anabolic steroids for non-medical purposes (often athletes and bodybuilders). The main motivation for misuse is to increase lean muscle mass and strength beyond natural limits. Bodybuilders, weightlifters, and even some amateur athletes may use steroids to build muscle more quickly, increase strength, or reduce body fat. Medical experts note that “the main reason people misuse anabolic steroids is to increase lean muscle mass when using them in conjunction with weight training”. In addition, steroids can improve muscle recovery: the Mayo Clinic explains that these drugs may lower the damage to muscles from hard workouts and help users “bounce back faster,” enabling more frequent or intense training sessions.

In short, people use anabolic steroids either because a doctor has prescribed them for a health condition, or because individuals believe they will gain an edge in their athletic performance or appearance. The question of why people use steroids in non-medical contexts is closely tied to fitness goals and personal image. For example, some users may have muscle dysmorphia (a body image disorder) and feel compelled to use steroids to achieve a more muscular look. Competitive pressures can also play a role: for athletes, more muscle often means greater strength and better performance in sports.

Anabolic Steroids in Bodybuilding

The uses of steroids in bodybuilding are well-known but highly controversial. Bodybuilders often use anabolic steroids to dramatically accelerate muscle growth and strength. In practice, many cycle or “stack” multiple steroids at once in complex regimens. StatPearls describes how abusers commonly take doses many times higher than medical prescriptions, and combine several steroid forms in a pattern called stacking. The goal is to maximize muscle gains – for example, by injecting testosterone derivatives (like Depo-Testosterone) along with other steroids during “on” cycles, then stopping (“off” cycles) to manage side effects.

Some bodybuilders inject anabolic steroids such as testosterone (shown here) to boost muscle growth

Despite their popularity in some sports circles, anabolic steroids have no approved use for athletic enhancement. Using them for bodybuilding or sports is illegal and banned by most sporting organizations. The Mayo Clinic warns that “doping with anabolic steroids is banned by most sports leagues… and it is not legal” to obtain them without a prescription. In other words, professional sports prohibit steroid use, and buying steroids outside a pharmacy carries legal risks.

Nevertheless, the perceived benefits drive continued use in bodybuilding. Advocates claim faster muscle recovery, higher training intensity, and the ability to build much more muscle. For example, Mayo Clinic notes that steroids help muscles repair and grow after workouts, allowing athletes to train harder more often. However, all these gains come at a cost: scientific studies and health authorities emphasize that steroid abuse can cause serious side effects (heart disease, liver damage, hormonal imbalances, and more). In bodybuilding, users often overlook these risks to achieve rapid strength and size gains.

Conclusion

Overall, the role of anabolic steroids in bodybuilding is to dramatically boost muscle size and athletic output, at the expense of health and legality. They remain the most common appearance- and performance-enhancing drugs in these sports. Authorities stress that any non-medical use is misuse; the health benefits touted in bodybuilding contexts are not supported by regulatory agencies, and the long-term health consequences can be severe.

Sources: Authoritative medical sources and government publications have been used to describe steroids, their types, mechanisms, uses, and effects. These sources include the Cleveland Clinic, Mayo Clinic, and U.S. government agencies (DEA), ensuring accurate and up-to-date information.