Anabolic-androgenic steroids often increase libido while a person is actively using them, but that boost comes at a steep cost. Once use stops, more than half of men in one large survey reported a new drop in sex drive they did not have before starting, and roughly a quarter developed erectile dysfunction for the first time.
Why Steroids Boost Sex Drive in the Short Term
Testosterone is the primary hormone driving sexual desire in both men and women. When someone takes exogenous steroids, they flood their body with synthetic androgens that mimic or amplify testosterone’s effects. Within the brain, testosterone binds to androgen receptors concentrated in regions tied to sexual motivation, including the medial preoptic area and other limbic structures that regulate arousal, reward, and mating behavior.1PubMed Central. Neuroanatomy and function of human sexual behavior: A neglected or unknown issue? When circulating androgen levels spike far above the normal range, these brain areas get flooded with stimulation, and users frequently experience a noticeable surge in sexual desire.
Animal research reinforces this picture. Studies in male mammals show that androgen receptor expression in specific brain areas rises alongside sexual motivation, and that testosterone exposure during development is required for normal sexual behavior to emerge in adulthood.2PubMed. Relationship between sexual satiety and motivation, brain androgen receptors and testosterone in male mandarin voles This is one reason people who start a steroid cycle often feel a rapid spike in libido within the first few weeks. The brain’s sexual circuitry is being driven at a pace that exceeds what normal physiology produces.
The Crash After the Cycle
The libido spike is the part people talk about. The crash that follows is the part they wish someone had warned them about. When you take supraphysiological doses of androgens, your body recognizes the surplus and shuts down its own testosterone production. The hypothalamic-pituitary-gonadal axis, the hormonal feedback loop that tells your testes to make testosterone, goes quiet. While you are still injecting or swallowing steroids, this does not matter because the exogenous supply keeps levels high. The moment you stop, you are left with almost no testosterone at all.
A survey of men who used anabolic-androgenic steroids found that when they stopped, about 57% reported new-onset decreased libido and about 27% developed erectile dysfunction they had never experienced before.3PubMed Central. Impact of anabolic androgenic steroids on sexual function These were not pre-existing problems returning. They were sexual dysfunctions that appeared for the first time, apparently triggered by the withdrawal itself. The study also found that longer and heavier use made these problems more likely: men who used steroids for more than three years, or more than 40 weeks per year, were at greater risk of losing their sex drive after quitting.
A separate survey of 470 men who stopped steroid use painted a similar picture. Nearly all of them, about 95%, experienced at least one withdrawal symptom. Low mood was the most common complaint, reported by roughly 73% of users. Tiredness hit about 59%, and reduced libido affected about 57%.4PubMed Central. The use of post-cycle therapy is associated with reduced withdrawal symptoms from anabolic-androgenic steroid use: a survey of 470 men Only about 5% reported no symptoms at all. The combination of low mood, fatigue, and cratered libido is a predictable consequence of your body trying to restart testosterone production from near zero.
When the Damage Lingers
For some men, this is not just a few rough weeks. A study comparing former long-term steroid users to non-using weightlifters found that even months after stopping, former users had significantly smaller testicular volume and lower serum testosterone levels. Five of the former users still had testosterone below 200 ng/dL despite being off steroids for anywhere from three to 26 months. The former users also scored significantly lower on a standardized measure of sexual desire, roughly two and a half points lower on a 10-point scale.5PubMed Central. Prolonged hypogonadism in males following withdrawal from anabolic-androgenic steroids: an under-recognized problem
A scoping review of recovery from steroid-induced hypogonadism found that while physical changes like testicular shrinkage generally recover over months to years, and sperm production eventually returns, libido typically comes back over several months but tends to be less potent than it was during active steroid use.6PubMed Central. Physical, psychological and biochemical recovery from anabolic steroid-induced hypogonadism: a scoping review So even with full hormonal recovery, the “new normal” may feel like a step down from the artificially elevated state your brain got used to. This is part of what makes steroid cycles psychologically hard to stop: your baseline libido after recovery can feel disappointing compared to the supraphysiological high.
How Steroids Can Cause Erectile Dysfunction Even While You Are on Them
A high sex drive does not guarantee good erections, and this is where the steroid story gets complicated. Even during a cycle, when testosterone levels are sky-high, some users develop erectile problems. One mechanism involves direct vascular damage. A study measuring blood vessel function in young steroid users found that their flow-mediated dilation, a marker of how well blood vessels relax and expand, was significantly impaired compared to non-users. The steroid users had a median response of about 4% compared to nearly 7% in controls, suggesting real endothelial dysfunction.7Scientific Reports. Impaired vascular function among young users of anabolic–androgenic steroids Since erections depend on blood flow into the penis, anything that damages blood vessel lining can cause problems regardless of how much testosterone is circulating.
Animal research supports this. In rats given high-dose testosterone, researchers found that nitric oxide availability in the erectile tissue of the penis dropped. High testosterone doses increased one form of nitric oxide synthase associated with oxidative stress while reducing the form that actually supports healthy erections. The net result was worse erectile function despite abundant testosterone.8Sexual Medicine. Effect of High Testosterone Levels on Endothelial Function in Aorta and Erectile Function in Rats This is a counterintuitive finding that many users do not expect: more testosterone does not always mean better erections, and past a certain point, it can actively sabotage them.
The Estrogen Factor
Many people think of estrogen as purely a female hormone, but it plays a crucial role in male sexual function. The body naturally converts some testosterone into estradiol through an enzyme called aromatase, and that estradiol is essential for healthy libido and erectile function in men.9PubMed Central. The role of estradiol in male reproductive function When you inject large doses of aromatizable steroids, more testosterone gets converted into estradiol, and estrogen levels can climb to abnormal highs. Too much estrogen can dampen sexual desire and contribute to water retention, mood changes, and other unwanted effects.
Users sometimes respond by taking aromatase inhibitors to suppress estrogen. But crashing estrogen too low creates its own set of sexual problems: joint pain, dry skin, flat mood, and, ironically, loss of the very libido the person was trying to preserve. Getting the estrogen balance right during a steroid cycle is a tightrope walk that many recreational users misjudge, and either extreme tends to hurt sexual function.
What SHBG Has to Do With It
Sex hormone-binding globulin is a protein in the blood that binds to testosterone and makes it inactive. Only the unbound (“free”) fraction of testosterone is biologically available to act on tissues. Anabolic steroids suppress SHBG dramatically. One study of the oral steroid stanozolol found that just three days of dosing dropped SHBG to roughly half of baseline levels.10PubMed. Sex hormone-binding globulin response to the anabolic steroid stanozolol: evidence for its suitability as a biological androgen sensitivity test Other research found that self-administered testosterone and anabolic steroids reduced SHBG by 80 to 90%, and those low levels persisted for up to 16 weeks after the steroids were discontinued.11Journal of Steroid Biochemistry. Response of serum testosterone and its precursor steroids, SHBG and CBG to anabolic steroid and testosterone self-administration in man
During a cycle, suppressed SHBG means a higher proportion of circulating androgens are free and active, amplifying the androgenic effects on the brain and body, including the libido surge. After the cycle, when total testosterone levels have cratered because the body’s production is shut down, having low SHBG does not help because there is little testosterone left to free up. The net effect is very low free testosterone during the withdrawal period, which compounds the libido and erectile problems.
Therapeutic Testosterone Is a Different Story
Not all steroid use is abuse. Testosterone replacement therapy, prescribed by a doctor for men with genuinely low testosterone, operates at much lower doses and aims to bring levels back into the normal range rather than far above it. The evidence here is more straightforward: in men whose testosterone is low at baseline, replacement therapy consistently improves libido. A meta-analysis covering over 1,200 hypogonadal men across 14 randomized controlled trials found significant improvement in sexual desire scores, with a moderate effect size.12PubMed Central. Testosterone Therapy Improves Erectile Function and Libido in Hypogonadal Men The same review noted that in men who already have normal testosterone levels, adding more does not reliably boost libido further, a finding that challenges the assumption that more is always better.
This distinction matters for understanding the “dose-response” relationship. Going from low to normal testosterone levels produces a clear libido benefit. Going from normal to supraphysiological levels produces a temporary spike that comes with mounting side effects. Going from supraphysiological back to zero after stopping produces a crash. The therapeutic middle ground avoids both extremes.
How Steroids Affect Women’s Libido
Women produce testosterone too, just at much lower concentrations, and it plays the same role in driving sexual desire. In clinical settings, low-dose testosterone has been studied as a treatment for low libido in women. A systematic review found that in postmenopausal women, transdermal testosterone patches at 300 micrograms per day significantly improved sexual desire and reduced distress associated with low libido.13PubMed. Testosterone therapy for female sexual dysfunction: a systematic review of the literature demonstrating outcomes in premenopausal and postmenopausal women A landmark trial published in the New England Journal of Medicine found that both 150 and 300 microgram daily patches produced statistically significant increases in desire compared to placebo in postmenopausal women not taking estrogen.14New England Journal of Medicine. Testosterone for Low Libido in Postmenopausal Women Not Taking Estrogen More recent guidance describes the benefit as modest but meaningful for appropriately selected women with distressing low desire.15Obstetrics & Gynecology. Testosterone for the Treatment of Hypoactive Sexual Desire Disorder in Perimenopausal and Postmenopausal Women
The picture changes sharply when women use anabolic steroids at bodybuilding-level doses. A qualitative study of women who used anabolic-androgenic steroids found that increased libido was common, but the experience was not always positive. Many women also experienced clitoral enlargement, which caused shame and reduced self-esteem. Whether the heightened libido felt good or bad depended on life circumstances, partner status, and whether the genital changes were also happening.16PubMed. Anabolic-androgenic steroid use among women – A qualitative study on experiences of masculinizing, gonadal and sexual effects Systematic reviews have also documented menstrual irregularities and subfertility as consequences of female steroid abuse.17PubMed. Effects of Anabolic Androgenic Steroids on the Reproductive System of Athletes and Recreational Users: A Systematic Review and Meta-Analysis
The Role of 5-Alpha Reductase and DHT
Some of testosterone’s effects on sexual function depend on its conversion to dihydrotestosterone through an enzyme called 5-alpha reductase. DHT is a more potent androgen that binds tightly to androgen receptors in certain tissues. Within the brain, this conversion pathway contributes to masculinizing sexual behavior.1PubMed Central. Neuroanatomy and function of human sexual behavior: A neglected or unknown issue? Blocking this enzyme, as the hair-loss drug finasteride does, has been linked to sexual side effects in some users. A study of men with post-finasteride syndrome found that all 16 patients had erectile dysfunction, and their cerebrospinal fluid showed altered levels of multiple neuroactive steroids, including decreased DHT and changed ratios of other hormones that regulate nervous system function.18PubMed. Neuroactive steroid levels and psychiatric and andrological features in post-finasteride patients
This matters for steroid users because some anabolic compounds are themselves DHT derivatives that cannot convert to estrogen, while others are converted by 5-alpha reductase into more potent forms. Some users also take finasteride or dutasteride alongside their steroid cycle to prevent hair loss, unknowingly blunting a pathway that contributes to sexual function. The interplay between different steroid compounds, enzyme pathways, and receptor sensitivity helps explain why two people on the same cycle can have wildly different sexual experiences.
Post-Cycle Therapy and Getting Back to Normal
Most experienced steroid users follow their cycle with what is called post-cycle therapy, a protocol designed to kick-start the body’s own testosterone production. The standard approach involves selective estrogen receptor modulators like clomiphene or tamoxifen, sometimes combined with human chorionic gonadotropin, which mimics the signal that tells the testes to produce testosterone.19PubMed Central. Post-cycle therapy after androgen abuse: a narrative review of mechanisms, evidence, and clinical perspectives The survey of 470 men who stopped steroid use found that those who used post-cycle therapy reported fewer withdrawal symptoms than those who stopped cold.4PubMed Central. The use of post-cycle therapy is associated with reduced withdrawal symptoms from anabolic-androgenic steroid use: a survey of 470 men
Even with post-cycle therapy, recovery is not instant. The scoping review on steroid-induced hypogonadism found that libido typically returns to baseline over several months, though the exact timeline depends on age, the duration of use, and which compounds were taken.6PubMed Central. Physical, psychological and biochemical recovery from anabolic steroid-induced hypogonadism: a scoping review Younger users with shorter histories tend to bounce back faster. Men who used steroids heavily for years sometimes need medical supervision to fully recover, and a small number may require ongoing testosterone replacement therapy if their natural production never fully restarts.
Which Compounds Carry the Most Risk
Not all anabolic steroids affect sexual function equally. The survey data on post-cycle sexual dysfunction found that certain use patterns were more strongly associated with problems. Men who used additional substances beyond testosterone, such as 17-alpha alkylated oral steroids, research chemicals, and growth hormone, were more likely to report decreased libido when they stopped.3PubMed Central. Impact of anabolic androgenic steroids on sexual function Duration was also a major factor: using steroids for more than 10 years and spending more than 40 weeks per year on cycle were both associated with erectile dysfunction after cessation.
Progestogenic steroids like nandrolone and trenbolone deserve special mention. These compounds can elevate prolactin levels, a hormone that directly suppresses sexual desire and function. Users of nandrolone-based steroids frequently report sexual dysfunction even during use, a well-known effect in bodybuilding circles sometimes called “deca dick” after the brand name Deca-Durabolin. The mechanism is distinct from the estrogen-related issues seen with testosterone: elevated prolactin suppresses gonadotropin-releasing hormone and can blunt the dopamine signaling that underpins sexual arousal.
Corticosteroids Are a Separate Category Entirely
When people hear “steroids,” some think of the prednisone their doctor prescribed for asthma or an autoimmune condition. Corticosteroids and anabolic-androgenic steroids are fundamentally different drugs. Corticosteroids suppress inflammation and immune activity; they do not build muscle or directly stimulate androgen receptors. However, corticosteroids can still affect sexual function indirectly. Chronic use of drugs like prednisone suppresses the adrenal glands, which produce precursor hormones that contribute to testosterone levels. Long-term corticosteroid use can lead to fatigue, weight gain, mood disturbances, and reduced libido through these secondary hormonal effects. If your doctor prescribes a short course of prednisone for a flare-up, that is unlikely to meaningfully affect your sex drive. Months of high-dose use is a different matter.
Psychological Dimensions Beyond Hormones
Hormones are only part of the story. Steroid users often report feeling more confident, aggressive, and energetic during a cycle, all of which feed into sexual assertiveness. The physical changes, bigger muscles, lower body fat, and enhanced physique, also boost self-image and can increase how much sexual attention a person receives. Disentangling the direct hormonal effect on the brain from these psychological and social boosts is nearly impossible in real-world settings.
On the flip side, the psychological toll of coming off can be as damaging to sexual function as the hormonal crash. The survey data showing that about 73% of men experienced low mood upon stopping steroids speaks to this.4PubMed Central. The use of post-cycle therapy is associated with reduced withdrawal symptoms from anabolic-androgenic steroid use: a survey of 470 men Depression kills libido independently of testosterone levels. When you combine genuine hormonal deficiency with depressive symptoms, body image distress from losing size, and the anxiety of wondering whether your system will recover, sexual function takes a hit from multiple directions at once. Relationships suffer too. Partners who got used to a user’s high-cycle libido may struggle to adjust when desire drops off a cliff, and the tension itself can create performance anxiety that compounds the problem further.