Erectile Dysfunction: Causes, Diagnosis and Treatment
Medically reviewed by Dr Abhishek Kumar, M.B.B.S, Reg. No. 73512 (West Bengal Medical Council) · Reviewed on Jul 27, 2026
Clinical summary: Erectile Dysfunction — the condition, what each system of medicine offers, and the evidence.
Quick read
Erectile dysfunction is the persistent inability to get or keep an erection firm enough for satisfactory sex. It becomes more common with age, but age itself is not the cause: most long-standing cases are vascular, and because the arteries of the penis are narrower than those of the heart, erectile difficulty can appear years before heart disease is diagnosed. Diagnosis is mostly clinical — a careful history, a validated questionnaire and a small set of blood tests. Treatment begins with correcting the underlying cause and modifying risk factors before moving through oral medicines, devices, injections and, rarely, surgery, all of which require a doctor's assessment.
An erection is not a single event. It is the end result of a nervous signal, a hormonal environment, a set of arteries that can widen on demand, and a vein-trapping mechanism that holds the blood in place. When a man cannot get or keep an erection firm enough for satisfactory sexual activity, and this persists, medicine calls it erectile dysfunction. The formal definition dates back to the National Institutes of Health consensus panel of 1993, which deliberately replaced the older word "impotence" because it carried judgement rather than meaning [1].
This article explains what is actually happening in the body, what causes it to go wrong, how doctors work out which cause applies to a particular man, and what the evidence says about each treatment. It does not tell you which treatment you need. That decision belongs to a doctor who has examined you and knows your other medical conditions and medicines.
How an Erection Actually Works
In the resting state, the smooth muscle inside the two corpora cavernosa of the penis is contracted, arterial inflow is low, and the penis is flaccid. Sexual stimulation, whether from the brain or from the genitals directly, triggers nerve endings and the endothelium lining the blood vessels to release nitric oxide.
Nitric oxide activates an enzyme called guanylate cyclase, which produces cyclic guanosine monophosphate, usually shortened to cGMP. cGMP relaxes the smooth muscle. Relaxed smooth muscle allows the arteries to widen and the sinusoidal spaces inside the penis to fill with blood. As those spaces expand, they compress the small veins that drain the penis against the surrounding tough fibrous layer, the tunica albuginea. That compression is what traps blood inside and produces rigidity. It is called the veno-occlusive mechanism [2].
The erection ends when an enzyme called phosphodiesterase type 5, or PDE5, breaks down cGMP. Smooth muscle contracts again, inflow drops, the veins reopen, and the penis returns to flaccid [2].
Two things follow from this that are worth holding onto. First, an erection is primarily a vascular event, so anything that damages blood vessels or the endothelium can impair it. Second, the entire chain depends on nitric oxide and cGMP, which is precisely why the most widely used oral drugs work by inhibiting PDE5 rather than by adding a hormone or a stimulant.
How Common Is It?
The most-cited population data still comes from the Massachusetts Male Aging Study, a community-based survey of men aged 40 to 70. It found that 52% of men in that age band reported some degree of erectile dysfunction, and that complete erectile dysfunction tripled from 5% at age 40 to 15% at age 70 [3].
Projections made in 1999 estimated roughly 152 million affected men worldwide in 1995, rising towards 322 million by 2025, with the largest absolute increases expected in Africa, Asia and South America rather than in Europe or North America [4].
Prevalence is much higher in men with diabetes. A meta-analysis pooling 145 studies and 88,577 men found erectile dysfunction in 52.5% of men with diabetes overall, 37.5% in type 1 and 66.3% in type 2, with roughly 3.6 times the odds compared with men without diabetes [5]. An Indian meta-analysis restricted to men with type 2 diabetes reported comparably high figures, which matters given how common type 2 diabetes has become in this country [6].
Organic or Psychogenic?
The single most useful early distinction is whether the problem is primarily physical (organic) or primarily psychological (psychogenic). In practice many men have both, but the pattern of symptoms usually points one way.
The reasoning behind the nocturnal erection question is worth stating plainly. Healthy men have several spontaneous erections during sleep, mostly during REM sleep, entirely independent of desire or anxiety. If those are preserved and firm, the machinery works, and the difficulty during waking sex is more likely to be psychological. If they have disappeared, the machinery itself is likely impaired. Formal overnight testing of penile tumescence and rigidity was built on exactly this logic, though modern reviews caution that the test has real limitations and is now used mainly in specific or medico-legal situations rather than routinely [7].
| Feature | Suggests organic | Suggests psychogenic |
|---|---|---|
| Onset | Gradual, over months or years | Sudden, often traceable to an event |
| Morning and night-time erections | Reduced or absent | Preserved and firm [7] |
| Situation | Present with every partner and with masturbation | Situational; normal in some contexts |
| Course | Steadily progressive | Fluctuates with mood and circumstances |
| Typical background | Diabetes, hypertension, smoking, vascular disease | Anxiety, depression, relationship stress, performance fear |
| Response pattern | Consistent, predictable difficulty | Marked "performance anxiety" cycle |
What Causes Erectile Dysfunction
Erectile dysfunction is a symptom, not a diagnosis. The clinically useful question is always which system has failed.
| Category | Mechanism | Common examples |
|---|---|---|
| Vascular | Reduced arterial inflow or failure of the vein-trapping mechanism | Atherosclerosis, hypertension, dyslipidaemia, diabetes, smoking [5] [8] |
| Neurogenic | Interrupted nerve signalling to or from the penis | Spinal cord injury, multiple sclerosis, Parkinson's disease, diabetic neuropathy, pelvic or prostate surgery |
| Hormonal | Low testosterone or other endocrine disorders reducing desire and tissue responsiveness | Hypogonadism, thyroid disease, hyperprolactinaemia [9] |
| Drug-induced | Medicines interfering with vascular, neural or hormonal pathways | Some antihypertensives, several antidepressants, antipsychotics, anti-androgens |
| Structural | Physical alteration of the erectile bodies | Peyronie's disease, penile trauma, congenital curvature |
| Psychogenic | Central inhibition of the erectile reflex | Performance anxiety, depression, relationship conflict, stress [7] |
| Lifestyle | Cumulative vascular and metabolic injury | Smoking, obesity, physical inactivity, excess alcohol [8] [10] |
Smoking deserves specific mention because the evidence is unusually consistent. A systematic review with meta-analysis of observational studies found current smokers had about 1.5 times the odds of erectile dysfunction compared with non-smokers, and former smokers about 1.3 times, which suggests some of the risk is recoverable after quitting [8].
Testosterone is often assumed to be the main culprit, and usually it is not. Low testosterone more typically reduces sexual desire than it destroys erectile capacity, and the Endocrine Society guideline recommends testosterone therapy only for men with unequivocally and consistently low levels plus consistent symptoms, not as a general treatment for erectile dysfunction [9]. Testing is warranted; automatic replacement is not.
Erectile Dysfunction as an Early Warning of Heart Disease
This is the part of the topic that most changes what a doctor does, and it follows directly from the physiology described earlier.
The arteries that supply the penis are considerably narrower than the coronary arteries. If a systemic process is progressively narrowing arteries throughout the body, the effect becomes noticeable in the narrower vessel first. This is the artery size hypothesis, and it explains why erectile difficulty can be the first symptom of a disease that has not yet reached the heart [11].
The clinical data supports it. In a study of 300 consecutive patients admitted with acute chest pain and angiographically confirmed coronary artery disease, 49% reported erectile dysfunction. Among those men, 67% said their erectile symptoms had appeared before their cardiac symptoms, with a mean interval of 38.8 months [12].
Longer-term follow-up points the same way. In a large prostate cancer prevention trial cohort, incident erectile dysfunction was associated with a subsequently raised risk of cardiovascular events [13]. A meta-analysis of cohort studies concluded that erectile dysfunction independently predicts cardiovascular events, coronary heart disease, stroke and all-cause mortality [14].
The practical consequence is the Princeton consensus approach: a man presenting with erectile dysfunction and no known heart disease should be assessed for cardiovascular risk, and sexual activity itself should be risk-stratified before treatment for erectile dysfunction is started [15]. Treating the erection while ignoring the arteries misses the more serious diagnosis.
How Erectile Dysfunction Is Diagnosed
Diagnosis is overwhelmingly clinical. Most men need a good history, a focused examination and a small panel of blood tests. Specialised vascular studies are reserved for a minority.
A validated questionnaire makes the assessment reproducible rather than impressionistic. The International Index of Erectile Function was developed as a multidimensional scale covering erectile function, orgasm, desire, intercourse satisfaction and overall satisfaction [16]. Its abridged five-item version, widely used in clinics as the IIEF-5 or Sexual Health Inventory for Men, is a practical screening and severity tool [17].
| IIEF-5 score | Interpretation |
|---|---|
| 22–25 | No erectile dysfunction |
| 17–21 | Mild |
| 12–16 | Mild to moderate |
| 8–11 | Moderate |
| 5–7 | Severe |
Scores are a starting point for a conversation, not a diagnosis by themselves [17].
| Step | What it involves | What it is looking for |
|---|---|---|
| Sexual and medical history | Onset, pattern, nocturnal erections, partner and relationship factors, full medicine list | Organic versus psychogenic pattern; drug causes [7] |
| Validated questionnaire | IIEF-5 or full IIEF | Objective severity and a baseline to measure change against [16] [17] |
| Physical examination | Cardiovascular status, blood pressure, abdominal and genital examination, secondary sexual characteristics | Vascular disease, Peyronie's plaques, testicular abnormality |
| Basic blood tests | Fasting glucose or HbA1c, lipid profile, morning total testosterone | Undiagnosed diabetes, dyslipidaemia, hypogonadism [9] |
| Cardiovascular risk assessment | Risk scoring and stratification of fitness for sexual activity | Occult coronary disease [15] |
| Specialised testing | Nocturnal tumescence and rigidity testing, penile duplex ultrasound | Reserved for diagnostic uncertainty or specific indications [7] |
Two guideline documents set the reference standard for this work: the American Urological Association guideline on erectile dysfunction [18] and the European Association of Urology guidelines on male sexual dysfunction [19]. A comprehensive clinical reference on the subject is also available as a textbook for readers who want depth beyond a summary article [20].
Treatment: What the Evidence Supports
ED treatment follows the cause. A man whose erectile dysfunction reflects untreated diabetes, an offending medicine or undiagnosed vascular disease needs those addressed, not simply a prescription to override the symptom.
| Tier | Options | Notes |
|---|---|---|
| Address the cause | Glycaemic control, blood pressure and lipid management, reviewing medicines that may be responsible | Should happen alongside every other tier [18] [19] |
| Lifestyle modification | Smoking cessation, weight reduction, regular physical activity, reduced alcohol | Evidence of measurable improvement in erectile function scores [8] [10] |
| Psychological treatment | Sex therapy, cognitive behavioural approaches, couple-based work | Particularly where the pattern is psychogenic or mixed [7] |
| First-line medical | Oral PDE5 inhibitors | Prescription only; contraindicated with nitrates [18] [19] |
| Second-line | Vacuum erection devices, intracavernosal or intraurethral therapy | Used when oral therapy is unsuitable, ineffective or not tolerated [19] |
| Third-line | Penile prosthesis surgery | Considered when other options have failed or are unsuitable [18] |
The lifestyle evidence is stronger than it is usually given credit for. In a randomised trial of 110 obese men with erectile dysfunction, a two-year intervention of diet and exercise raised mean IIEF scores from 13.9 to 17, while the control group stayed unchanged at 13.5 to 13.6. Seventeen men in the intervention group regained scores in the normal range, compared with three in the control group [10].
About PDE5 Inhibitors
These drugs work by blocking the enzyme that breaks down cGMP, which prolongs smooth muscle relaxation. They do not create desire and they do not produce an erection without sexual stimulation, because the nitric oxide signal still has to be generated first [2].
The four agents differ mainly in how quickly they act, how long they remain effective, and whether food interferes.
| Generic drug | Typical onset | Approximate duration | Food effect |
|---|---|---|---|
| Sildenafil | 30–60 minutes | 4–6 hours | Absorption delayed by a high-fat meal |
| Vardenafil | 30–60 minutes | 4–8 hours | Absorption delayed by a high-fat meal |
| Tadalafil | 30–120 minutes | Up to about 36 hours | Not meaningfully affected |
| Avanafil | 15–30 minutes | About 6 hours | Minimally affected |
Doses are deliberately not listed here. Selection, dose and suitability are prescribing decisions that depend on kidney and liver function, other medicines and cardiac status [18] [19].
Two safety points are not optional. PDE5 inhibitors are contraindicated in men taking nitrates in any form, including sublingual glyceryl trinitrate and isosorbide preparations, because the combination can cause a profound and dangerous drop in blood pressure [15] [18]. They also interact with alpha-blockers and require caution in significant cardiovascular disease, which is exactly why the cardiovascular assessment described earlier comes first [15]. These are prescription medicines everywhere in India; products sold without prescription in general stores or online are outside any quality control, and counterfeit tablets are a recognised problem.
What the Evidence Does Not Support
An honest article has to include this section, because the gap between marketing and evidence is unusually wide in this field.
There is no good evidence that any over-the-counter capsule, oil, herbal mixture or "power" supplement reliably treats erectile dysfunction. Some such products have been found to contain undeclared PDE5 inhibitors, which means a man may be taking a real prescription drug, at an unknown dose, without knowing it, and without the nitrate check that would normally precede it. Neither the AUA nor the EAU guideline recommends unregulated supplements as treatment [18] [19].
Similarly, erectile dysfunction is not caused by masturbation, and it is not a fixed consequence of ageing. Age is associated with it, but the association is largely mediated by the vascular and metabolic conditions that accumulate with age rather than by age itself [3] [11]. That distinction matters, because vascular and metabolic conditions are treatable and age is not.
When to See a Doctor
If difficulty getting or keeping an erection persists for more than a few weeks, or if it is affecting confidence, mood or a relationship, it is worth a medical opinion. Occasional difficulty is normal and near-universal. A consistent pattern is a signal.
There is a stronger reason to go early. Because erectile dysfunction can be the first visible sign of vascular disease, a man presenting with it may be receiving an opportunity to detect and treat cardiovascular risk years before a cardiac event [12] [14] [15]. Assessment is also warranted for anyone with diabetes, hypertension, dyslipidaemia, or a history of pelvic surgery or radiotherapy, and for anyone who noticed the change after starting a new medicine.
A consultation for this is an ordinary medical consultation, conducted with the same confidentiality as any other. If cost, distance or privacy is the barrier, you can book a confidential consultation with a registered medical practitioner who has studied sexology rather than self-medicating. If you want a plain-language overview of the modifiable causes specifically, we have a separate article on the lifestyle causes of erectile dysfunction.
Conclusion
Erectile dysfunction is a well-characterised medical condition with an understood physiology, an identifiable set of causes, a straightforward diagnostic pathway and a treatment ladder supported by international guidelines. Most importantly, it is frequently a window onto the rest of a man's vascular health rather than an isolated problem of the penis.
The reasonable response to persistent erectile difficulty is therefore not embarrassment and not an unregulated capsule, but an assessment that asks what is causing it. That question has an answer often enough to be worth asking.
References
- NIH Consensus Development Panel on Impotence. Impotence. JAMA. 1993;270(1):83–90. https://doi.org/10.1001/jama.1993.03510010089036
- Andersson, K.-E. Mechanisms of penile erection and basis for pharmacological treatment of erectile dysfunction. Pharmacological Reviews. 2011;63(4):811–859. https://doi.org/10.1124/pr.111.004515
- Feldman, H.A., Goldstein, I., Hatzichristou, D.G., Krane, R.J., McKinlay, J.B. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. The Journal of Urology. 1994;151(1):54–61. https://doi.org/10.1016/S0022-5347(17)34871-1
- Aytaç, I.A., McKinlay, J.B., Krane, R.J. The likely worldwide increase in erectile dysfunction between 1995 and 2025 and some possible policy consequences. BJU International. 1999;84(1):50–56. https://doi.org/10.1046/j.1464-410x.1999.00142.x
- Kouidrat, Y., Pizzol, D., Cosco, T., et al. High prevalence of erectile dysfunction in diabetes: a systematic review and meta-analysis of 145 studies. Diabetic Medicine. 2017;34(9):1185–1192. https://doi.org/10.1111/dme.13403
- Rana, R.K., Barnwal, R.K., et al. Prevalence of erectile dysfunction among patients with type 2 diabetes mellitus in India: a meta-analysis. Expert Review of Endocrinology & Metabolism. 2025;20(6):607–614. https://doi.org/10.1080/17446651.2025.2469635
- Zou, Z., Lin, H., Zhang, Y., Wang, R. The role of nocturnal penile tumescence and rigidity (NPTR) monitoring in the diagnosis of psychogenic erectile dysfunction: a review. Sexual Medicine Reviews. 2019;7(3):442–454. https://doi.org/10.1016/j.sxmr.2018.10.005
- Cao, S., Yin, X., Wang, Y., Zhou, H., Song, F., Lu, Z. Smoking and risk of erectile dysfunction: systematic review of observational studies with meta-analysis. PLoS ONE. 2013;8(4):e60443. https://doi.org/10.1371/journal.pone.0060443
- Bhasin, S., Brito, J.P., Cunningham, G.R., et al. Testosterone therapy in men with hypogonadism: an Endocrine Society clinical practice guideline. The Journal of Clinical Endocrinology & Metabolism. 2018;103(5):1715–1744. https://doi.org/10.1210/jc.2018-00229
- Esposito, K., Giugliano, F., Di Palo, C., et al. Effect of lifestyle changes on erectile dysfunction in obese men: a randomized controlled trial. JAMA. 2004;291(24):2978–2984. https://doi.org/10.1001/jama.291.24.2978
- Montorsi, P., Ravagnani, P.M., Galli, S., et al. The artery size hypothesis: a macrovascular link between erectile dysfunction and coronary artery disease. The American Journal of Cardiology. 2005;96(12B):19M–23M. https://doi.org/10.1016/j.amjcard.2005.07.006
- Montorsi, F., Briganti, A., Salonia, A., et al. Erectile dysfunction prevalence, time of onset and association with risk factors in 300 consecutive patients with acute chest pain and angiographically documented coronary artery disease. European Urology. 2003;44(3):360–365. https://doi.org/10.1016/S0302-2838(03)00305-1
- Thompson, I.M., Tangen, C.M., Goodman, P.J., Probstfield, J.L., Moinpour, C.M., Coltman, C.A. Erectile dysfunction and subsequent cardiovascular disease. JAMA. 2005;294(23):2996–3002. https://doi.org/10.1001/jama.294.23.2996
- Vlachopoulos, C.V., Terentes-Printzios, D.G., Ioakeimidis, N.K., Aznaouridis, K.A., Stefanadis, C.I. Prediction of cardiovascular events and all-cause mortality with erectile dysfunction: a systematic review and meta-analysis of cohort studies. Circulation: Cardiovascular Quality and Outcomes. 2013;6(1):99–109. https://doi.org/10.1161/CIRCOUTCOMES.112.966903
- Nehra, A., Jackson, G., Miner, M., et al. The Princeton III consensus recommendations for the management of erectile dysfunction and cardiovascular disease. Mayo Clinic Proceedings. 2012;87(8):766–778. https://doi.org/10.1016/j.mayocp.2012.06.015
- Rosen, R.C., Riley, A., Wagner, G., Osterloh, I.H., Kirkpatrick, J., Mishra, A. The International Index of Erectile Function (IIEF): a multidimensional scale for assessment of erectile dysfunction. Urology. 1997;49(6):822–830. https://doi.org/10.1016/S0090-4295(97)00238-0
- Rosen, R.C., Cappelleri, J.C., Smith, M.D., Lipsky, J., Peña, B.M. Development and evaluation of an abridged, 5-item version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction. International Journal of Impotence Research. 1999;11(6):319–326. https://doi.org/10.1038/sj.ijir.3900472
- Burnett, A.L., Nehra, A., Breau, R.H., et al. Erectile dysfunction: AUA guideline. The Journal of Urology. 2018;200(3):633–641. https://doi.org/10.1016/j.juro.2018.05.004
- Salonia, A., Bettocchi, C., Boeri, L., et al. European Association of Urology guidelines on sexual and reproductive health — 2021 update: male sexual dysfunction. European Urology. 2021;80(3):333–357. https://doi.org/10.1016/j.eururo.2021.06.007
- Carson, C.C., Kirby, R.S., Goldstein, I. (eds). Textbook of Erectile Dysfunction. Oxford: Isis Medical Media; 1999. Open Library record. https://openlibrary.org/works/OL20801560W
Why should you trust this article?
- Medically reviewed by Dr Abhishek Kumar, M.B.B.S, with 11 years of clinical experience (in practice since 2015).
- Registered medical practitioner — Reg. No. 73512 (West Bengal Medical Council), verifiable in the public register.
- Trained at Calcutta National Medical College & Hospital, West Bengal University of Health Sciences (2015).
- Member of National Health Authority — Ayushman Bharat Digital Mission (2026).
- Every claim is backed by the 20 cited sources in the References section — clinical guidelines, peer-reviewed research and established medical institutions, linked so you can verify them yourself.
- Last medically reviewed on Jul 27, 2026; Erecto - Men's Health Clinic re-checks published health content against current medical consensus.
Frequently Asked Questions
What is erectile dysfunction?
Erectile dysfunction is the persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. The term replaced the older word "impotence" in the 1993 NIH consensus statement, partly because "impotence" carried a judgement about the man rather than a description of a medical condition. The key word is persistent: occasional difficulty is normal and happens to almost every man.
Is erectile dysfunction a normal part of getting older?
No. Erectile dysfunction becomes more common with age, but age itself is not the mechanism. In the Massachusetts Male Aging Study, complete erectile dysfunction tripled from 5% at age 40 to 15% at age 70, and that rise is largely explained by the vascular and metabolic conditions that accumulate over a lifetime, such as diabetes, high blood pressure and smoking. Those conditions are treatable, which is why erectile dysfunction at any age deserves assessment rather than acceptance.
Can erectile dysfunction be a warning sign of heart disease?
Yes. The arteries supplying the penis are narrower than the coronary arteries, so a systemic narrowing process tends to show its effects there first. This is called the artery size hypothesis. In a study of 300 men with confirmed coronary artery disease, 49% had erectile dysfunction, and among those, two-thirds developed erectile symptoms before cardiac symptoms, by an average of about 38.8 months. Larger analyses have found that erectile dysfunction independently predicts later cardiovascular events, which is why guidelines recommend cardiovascular assessment for men presenting with it.
How do doctors tell psychogenic erectile dysfunction from physical causes?
Mostly from the pattern. Psychogenic erectile dysfunction typically starts suddenly, fluctuates with circumstances, may be limited to particular situations or partners, and spares the spontaneous erections that occur during sleep and on waking. Organic erectile dysfunction usually starts gradually, is present in all situations including masturbation, progresses steadily, and is accompanied by loss of night-time and morning erections. Overnight tumescence and rigidity testing was developed to test this distinction formally, but it is now used selectively rather than routinely.
What tests are needed to diagnose erectile dysfunction?
For most men the diagnosis is clinical. It involves a detailed sexual and medical history including all current medicines, a validated questionnaire such as the IIEF-5, a physical examination that includes cardiovascular assessment, and a limited set of blood tests: blood glucose or HbA1c, a lipid profile, and a morning testosterone level. Specialised investigations such as penile duplex ultrasound or overnight rigidity testing are reserved for cases where the diagnosis remains unclear or a specific intervention is being planned.
Does low testosterone cause erectile dysfunction?
Sometimes, but it is a less frequent cause than most people assume. Low testosterone more characteristically reduces sexual desire than it abolishes erectile capacity. Endocrine Society guidance recommends testosterone therapy only for men with consistently low measured levels together with consistent clinical symptoms, not as a general treatment for erectile dysfunction. Testosterone should be measured as part of the workup, but a low-normal result does not automatically mean replacement is the answer.
How do the oral tablets for erectile dysfunction work?
They are phosphodiesterase type 5 inhibitors. During sexual stimulation the body releases nitric oxide, which raises levels of a messenger molecule called cGMP that relaxes the smooth muscle in the penis and allows blood to flow in. PDE5 is the enzyme that breaks cGMP down. Blocking it lets the relaxation persist longer. This is also why these drugs do not work without sexual stimulation and do not create desire: the initial nitric oxide signal still has to happen naturally.
Are these medicines safe to buy without a prescription?
No. They are prescription medicines, and the reason is specific rather than bureaucratic. PDE5 inhibitors are contraindicated in men taking nitrate medicines for heart conditions, because the combination can cause a dangerous fall in blood pressure, and they require caution alongside alpha-blockers and in significant heart disease. A prescriber checks those interactions. Products sold without prescription are also outside quality control, and some marketed as "herbal" have been found to contain undeclared pharmaceutical ingredients.
Do lifestyle changes actually improve erectile function?
Yes, measurably. In a randomised controlled trial of 110 obese men with erectile dysfunction, two years of dietary change and increased physical activity raised average IIEF scores from 13.9 to 17, while the control group did not change. Seventeen men in the intervention group recovered scores in the normal range compared with three controls. Evidence on smoking points the same way: current smokers have roughly 1.5 times the odds of erectile dysfunction, and the odds for former smokers are lower, suggesting part of the risk is reversible after stopping.
When should a man see a doctor about erectile dysfunction?
If the difficulty has lasted more than a few weeks, or if it is affecting confidence, mood or a relationship, it warrants a medical opinion. There is a further reason to go sooner rather than later: because erectile dysfunction can be an early marker of vascular disease, assessment may identify treatable cardiovascular risk well before any cardiac event. Anyone with diabetes, high blood pressure, abnormal cholesterol, previous pelvic surgery or radiotherapy, or a change that began after starting a new medicine, should be assessed rather than wait.
This information is general and educational. It is not a diagnosis; please discuss your situation with the doctor during your consultation.
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