Steroid abuse causes a wide range of serious health consequences, from heart damage and liver disease to hormonal shutdown, psychiatric disorders, and permanent physical changes. The mortality rate among recreational athletes who use anabolic steroids is 6 to 20 times higher than among those who don’t, with nearly one-third of those deaths tied to cardiovascular disease. These aren’t rare edge cases. They represent predictable outcomes of flooding the body with synthetic hormones at doses far beyond what it naturally produces.
Heart Damage and High Blood Pressure
The cardiovascular system takes the hardest hit from long-term steroid abuse. Steroids cause the heart muscle to grow abnormally thick, a condition called concentric hypertrophy. In one study of long-term weightlifters who used steroids, 71% had heart pumping efficiency below the normal threshold. Their heart muscle mass was significantly greater than non-users (106 vs. 80 g/m²), while their pumping efficiency was markedly lower (49% vs. 59%). A healthy heart pumps efficiently; a steroid-thickened heart becomes stiff and struggles to fill and empty properly.
Blood pressure rises in tandem. Research shows that both systolic and diastolic blood pressure increase with steroid use, and the longer someone uses, the worse it gets. One study documented blood pressure reaching hypertensive levels after just an eight-week cycle. While blood pressure may return to normal after stopping, the structural changes to the heart and blood vessels, including increased stiffness of the aorta, can persist in former users. A Danish register study found that the rate of heart disease and death was three times higher in steroid users compared to the general population.
Hormonal Shutdown
When you flood your body with synthetic testosterone, your brain registers the excess and shuts down its own production. The signaling hormones that tell the testes to produce testosterone become undetectable within two to six weeks of starting steroid injections, depending on the dose. The entire chain of communication from brain to testes goes silent.
This shutdown is why men who use steroids commonly experience testicular atrophy. The testes shrink because they’re no longer receiving signals to work. The system does reverse after stopping, but recovery can take months or longer depending on how much was used and for how long. During that recovery window, testosterone levels remain abnormally low, which contributes to the depression and fatigue many users experience after quitting.
Liver Disease
Oral steroids are especially toxic to the liver. They can cause cholestasis, a condition where bile flow is blocked, leading to jaundice, dark urine, itching, and fatigue. They also cause a rare but dangerous condition called peliosis hepatis, where blood-filled cysts form inside liver tissue. These cysts can rupture and cause life-threatening internal bleeding.
Beyond these acute conditions, steroid use is linked to fatty liver disease, elevated liver enzymes (markers of liver cell damage), and both benign and malignant liver tumors. Case reports document liver injury developing after as little as two months of use. Injectable steroids carry less liver risk than oral forms, but they aren’t entirely safe either.
Psychiatric Effects and Dependence
Roughly half of steroid-using bodybuilders report mood disturbances while on cycle. In controlled studies, about 12% of users met clinical criteria for a manic episode during steroid use, with another 20% falling just short of the diagnosis. Mania during use can look like extreme irritability, grandiosity, reckless behavior, and aggression. In a prospective study giving testosterone to volunteers, 10% became noticeably hypomanic, with 4% reaching marked levels.
The flip side hits when users stop. About 12% of steroid users develop major depression upon cessation. Withdrawal symptoms include irritability, loss of interest in activities, persistent fatigue, sleep disruption, anxiety, hopelessness, and guilt. These aren’t just “feeling down.” They represent a clinical depression triggered by the abrupt loss of supraphysiologic hormone levels while the body’s own production remains suppressed.
Dependence is common. In one study, 57% of steroid users met diagnostic criteria for substance dependence, characterized by a strong desire to keep using, difficulty controlling use, withdrawal symptoms when stopping, tolerance (needing more to get the same effect), neglecting other interests, and continuing despite known harm.
Skin Changes
Acne affects roughly 43% to 50% of steroid users. The mechanism is straightforward: supraphysiologic androgen levels ramp up oil production in the skin, creating ideal conditions for severe breakouts. Most users develop acne on the face, chest, shoulders, and back. In rare cases, this progresses to acne fulminans, the most severe form, which produces painful, bleeding, ulcerative nodules. Stretch marks (striae) are also common, appearing as the skin struggles to accommodate rapid muscle growth.
Effects Specific to Men
Beyond testicular shrinkage, men who abuse steroids frequently develop gynecomastia, the growth of breast tissue. This happens because the body converts excess testosterone into estrogen. Gynecomastia from steroid use may not resolve on its own, unlike many other causes. If breast tissue remains for more than 12 months, it typically becomes permanent and requires surgical removal if the person wants it corrected.
Effects Specific to Women
Women who use anabolic steroids experience masculinizing effects that can be irreversible. Voice deepening occurs as the vocal cords thicken, and this change is often permanent. Clitoral enlargement is another common and typically irreversible consequence. Menstrual cycles become irregular or stop entirely, and fertility can be compromised. These changes can appear relatively quickly, and some, particularly voice changes and clitoral growth, persist even after stopping the drugs.
Stunted Growth in Adolescents
Teenagers who use steroids face a consequence that older users don’t: premature closure of growth plates. Growth plates are the areas of developing cartilage near the ends of long bones that allow them to lengthen during adolescence. Excess hormones accelerate the aging of these plates, causing them to harden and close before the person reaches their full genetic height potential. Once growth plates fuse, the process is irreversible. A teenager who uses steroids to build muscle may permanently sacrifice several inches of adult height.
Why the Risks Compound Over Time
Steroid abuse rarely produces just one consequence in isolation. The cardiovascular damage, hormonal disruption, liver stress, and psychiatric effects feed into each other. Elevated blood pressure accelerates heart remodeling. Hormonal crashes after cycles drive depression, which motivates restarting use. Liver damage worsens cholesterol profiles, which further damages blood vessels. The 6 to 20-fold increase in mortality among users reflects this compounding effect, where multiple organ systems deteriorate simultaneously over years of use.