Non-Traditional Causes of Erectile Dysfunction: Steroids, Porn, and COVID-19

Erectile dysfunction gets discussed plenty when the cause is diabetes, high blood pressure, or age. But a significant number of men in the UK experience ED linked to causes that feel harder to bring up with a GP: anabolic steroid use, heavy pornography consumption, or a COVID-19 infection. These aren't fringe concerns. They're increasingly well-documented, and they're treatable.

This article covers all three, explaining the mechanism behind each, what recovery looks like, and when it makes sense to seek clinical help.

Trenbolone, Anabolic Steroids, and Erectile Dysfunction#

Yes, trenbolone can cause erectile dysfunction. In fact, among anabolic-androgenic steroids (AAS), it's one of the most potent suppressors of natural testosterone production. The mechanism is well understood, even if it's rarely discussed openly.

What Trenbolone Does to Your Hormones#

Trenbolone is a veterinary anabolic steroid, not approved for human use in the UK. It's classified as a Class C controlled substance, meaning possession with intent to supply carries serious legal consequences. Despite this, it remains common in UK bodybuilding and gym culture, particularly among men chasing rapid muscle and strength gains.

The problem starts with the hypothalamic-pituitary-gonadal (HPG) axis. This is the hormonal feedback loop that tells your body to produce testosterone. When you introduce a powerful exogenous androgen like trenbolone, the brain detects high levels of androgens and responds by switching off its own signals. Luteinising hormone (LH) and follicle-stimulating hormone (FSH) production drops sharply. With no LH signal, the testes stop producing testosterone. Your natural levels can fall to near zero.

Testosterone is central to erections. It supports libido, nitric oxide production in penile tissue, and the sensitivity of nerve pathways involved in sexual arousal. When it drops severely, erectile function often follows.

Trenbolone is particularly problematic because it binds to androgen receptors with far greater affinity than testosterone itself. Some users report an initial surge in libido early in a cycle, but this typically gives way to progressive erectile difficulties, especially as the cycle continues or after it ends.

The Post-Cycle Problem#

Many men don't experience the worst of steroid-related ED during a cycle. It tends to hit hardest after stopping. Once trenbolone clears the body, there's a window where neither the exogenous steroid nor natural testosterone is present in meaningful quantities. This period, known colloquially in bodybuilding circles as the "crash", can cause severe erectile dysfunction alongside fatigue, low mood, and reduced motivation.

Recovery of natural testosterone production depends on several factors: duration of use, whether post-cycle therapy (PCT) agents like clomifene or hCG were used, overall health, and age. For some men, natural testosterone recovers within three to six months. For others, particularly those with prolonged, heavy use, recovery can take longer, and some degree of permanent suppression is possible.

A 2025 review published in the International Journal of Impotence Research found that sexual dysfunction, including ED, was among the most clinically significant consequences of anabolic steroid misuse, with HPG axis suppression identified as the primary driver.

Treatment Options After Steroid Use#

If you're experiencing ED related to steroid use, the most important first step is honesty with a clinician. GPs and sexual health specialists are not there to judge lifestyle choices. They need the full picture to help effectively.

Treatment options depend on where you are in recovery:

• While awaiting natural recovery: PDE5 inhibitors such as sildenafil or tadalafil can support erections in the short term by increasing blood flow to the penis regardless of hormonal status. These work even when testosterone is suppressed, though libido issues may persist separately.
• If testosterone hasn't recovered: A GP can arrange blood tests to assess LH, FSH, and testosterone levels. If the HPG axis remains suppressed, referral to endocrinology may be appropriate. In some cases, testosterone replacement therapy (TRT) is considered, though this carries its own considerations around fertility.
• Psychological support: The psychological impact of post-cycle sexual dysfunction is often underestimated. Anxiety about performance, shame around steroid use, and low mood from testosterone deficiency can compound ED significantly. Psychosexual therapy or CBT may be valuable alongside physical treatment.

If you'd like to explore ED medication while recovering, Totiva's online consultation is straightforward, confidential, and doesn't require a GP referral. You only pay if treatment is approved.

Porn-Induced Erectile Dysfunction#

This one tends to attract more scepticism than steroid-related ED, but the clinical literature increasingly supports it as a real phenomenon. The phrase most commonly used is porn-induced erectile dysfunction (PIED), and it affects men across age groups, though younger men in their 20s and 30s seem particularly affected.

How Pornography Can Rewire Sexual Response#

The brain's reward system doesn't distinguish between the pleasure of real-world sex and the visual stimulation of pornography. Both trigger dopamine release in the nucleus accumbens. The problem arises with repeated, escalating exposure.

As someone watches more pornography, the brain adapts to the high levels of dopamine stimulation. It does this partly by reducing the sensitivity of dopamine receptors and partly by increasing production of CREB (cyclic AMP response element-binding protein), a molecule that dampens the pleasure response. The result is a higher threshold for arousal. Content that was once stimulating becomes routine, and the user gravitates toward more intense or novel material to achieve the same response.

Real-world sex doesn't offer the same novelty, pace, or intensity as pornography. For men with high-frequency viewing habits, this creates a genuine mismatch. They may find it difficult or impossible to maintain an erection with a partner, even when physical health is otherwise normal.

This desensitisation effect is compounded by unrealistic expectations about sex itself. Pornography presents a version of sexual interaction that diverges dramatically from reality in terms of body image, duration, performance, and partner behaviour. When real encounters don't match that template, performance anxiety can take hold quickly.

Performance Anxiety as a Separate Driver#

Performance anxiety is one of the most common psychological causes of ED in otherwise healthy men. It creates a feedback loop: concern about getting or maintaining an erection leads to distraction during sex, which reduces arousal, which makes erections harder to achieve, which increases anxiety further.

For men with PIED, this anxiety is often layered on top of the desensitisation already described. Even after reducing or stopping pornography use, performance anxiety can persist as a residual problem.

What Recovery from PIED Looks Like#

The most evidence-supported intervention is abstinence from pornography, sometimes combined with a reduction in masturbation frequency. The rationale is to allow the brain's reward pathways to recalibrate. Many men report gradual improvement in real-world sexual response over weeks to months, though timelines vary considerably.

Psychosexual therapy and CBT are particularly useful here, both for addressing the anxiety component and for rebuilding a healthy relationship with sexuality. NHS referrals to psychosexual counselling services are available via GP, though waiting times vary by region.

PDE5 inhibitors like sildenafil can play a useful role during recovery. They provide reliable erectile support that can help break the anxiety cycle, allowing positive sexual experiences to rebuild confidence. They don't treat PIED at source, but they're a clinically sensible bridge while psychological recovery progresses.

COVID-19 and Erectile Dysfunction#

The link between COVID-19 and erectile dysfunction was identified relatively early in the pandemic, though it remains imperfectly understood. The evidence points to several overlapping mechanisms rather than a single clear cause-and-effect pathway.

The Evidence So Far#

A study published in the International Journal of Impotence Research found that men with a prior COVID-19 infection had a significantly increased risk of newly diagnosed ED compared to those without infection. The association held up after adjusting for cardiovascular and metabolic confounders.

Several mechanisms have been proposed. COVID-19 triggers a significant inflammatory response in many patients, and vascular inflammation is directly relevant to erectile function. Erections depend on healthy blood flow, and anything that damages or inflames the endothelium (the lining of blood vessels) can impair this.

There is also evidence that SARS-CoV-2 can directly infect testicular tissue and affect testosterone production in some men. A 2021 paper in the Journal of Endocrinological Investigation raised concerns about male reproductive health following COVID-19 infection, noting potential effects on both testosterone and sperm parameters.

Beyond the physical, the psychological burden of serious illness, particularly for men who were hospitalised or experienced severe symptoms, can independently trigger ED through anxiety and depression.

Long COVID and ED#

Long COVID represents a distinct consideration. Men experiencing persistent fatigue, cardiovascular symptoms, or hormonal disruption as part of long COVID may find ED becomes a chronic rather than transient issue. The fatigue and autonomic dysfunction associated with long COVID can suppress libido and impair the physiological cascade required for erection.

If ED began or worsened following COVID-19 infection and hasn't resolved after several months, it's worth raising with a GP. Blood tests to assess testosterone, cardiovascular risk factors, and inflammatory markers can help identify whether a treatable underlying cause is present.

Treatment After COVID-Related ED#

The good news is that the treatment options for COVID-related ED are broadly the same as for ED from other vascular or psychological causes. PDE5 inhibitors are first-line pharmacological treatment regardless of the underlying trigger, and they work by enhancing the body's natural vasodilatory response to sexual stimulation.

For men where testosterone has been affected, assessment and potential supplementation may be considered. For those where anxiety or depression is a primary driver, talking therapies remain effective.

NHS services are the appropriate route for investigating suspected long COVID complications, but waiting times for specialist referrals (urology, endocrinology) can be lengthy. Private prescribing via a registered online pharmacy is a clinically safe way to access PDE5 inhibitors while awaiting further investigation.

Treatment Options: A Practical Overview#

Regardless of the underlying cause, PDE5 inhibitors are the most commonly used and best-evidenced pharmacological treatment for ED. In the UK, these include:

• Sildenafil: The generic equivalent to Viagra, taken as needed roughly 30-60 minutes before sex. Available from as little as £4.99 for four 50mg tablets at Totiva, making it a practical and affordable option.
• Tadalafil (as-needed): Works similarly but lasts up to 36 hours, giving more flexibility. Available from £7.49 for four 10mg tablets.
• Daily tadalafil: A low-dose option taken every day, meaning you don't need to plan around a tablet. From £9.99 for 28 tablets of the 2.5mg dose.
• Viagra Connect: The branded over-the-counter version of sildenafil 50mg, available without a prescription in UK pharmacies since 2018. Totiva carries it from £11.99 for four tablets.

These medications don't cause erections on their own. They work by enhancing blood flow in response to sexual stimulation. They're suitable for most healthy men, though assessment for contraindications (particularly nitrate medications and certain cardiovascular conditions) is important.

If you're unsure which option suits your situation, Totiva's free online consultation connects you with UK-registered clinicians who can assess your medical history and recommend appropriate treatment. No GP appointment needed, and you only pay once treatment is approved.

When to See a Doctor#

For steroid-related ED, see a GP or visit a sexual health clinic if erections haven't returned to normal three to six months after stopping steroids. Request LH, FSH, and testosterone blood tests. If you're in an active cycle, an honest conversation with a clinician is still appropriate since some interventions work alongside ongoing use, though cessation is generally recommended.

For porn-related ED, a GP referral for psychosexual therapy is a reasonable starting point if self-directed abstinence hasn't helped after several weeks. CBT delivered through IAPT services is also available on the NHS.

For post-COVID ED that hasn't resolved within a few months, speak to your GP about long COVID assessment pathways. The NHS has established long COVID clinics in many regions that can coordinate investigation and management.

None of these causes are shameful or unusual. ED from these triggers is a physiological and psychological response to specific circumstances, not a character flaw. Getting proper assessment is the most practical thing you can do.