Erectile Dysfunction: Symptoms, Causes, and Treatment
Updated: 4 hours ago
Medically reviewed by Dr. Baraa Alnahhal, MD. Last reviewed October 13, 2026. This content is for educational purposes and is not medical advice.
TL;DR
Erectile dysfunction (ED) means not being able to get and keep an erection firm enough for sexual activity. It is also called impotence.
Having erection trouble from time to time is usually no cause for concern. ED becomes a medical concern when the difficulty is ongoing — a problem that is consistent and lasts more than three months.
ED affects men of all ages, including more than half of men between 40 and 70, and it is often a sign of an underlying health condition such as heart disease or diabetes — sometimes even years before other symptoms appear.
Treatment options range from lifestyle changes and counseling to oral medications, self-injections, vacuum devices, and penile implants, and most men find an approach that works for them.
Quick Answer
What is it? Erectile dysfunction (also called impotence) is not being able to get and keep an erection firm enough for sexual activity [1].
Why does it happen? An erection depends on the brain, hormones, nerves, muscles, and blood vessels. A problem with any of these — or with mental health — can interfere, and causes are often both physical and mental at once [1].
Is occasional trouble normal? Yes. Occasional erection difficulty is common. ED means consistent difficulty lasting more than three months [2].
Can it be treated? Yes. Options include lifestyle changes, counseling, oral medicines such as sildenafil and tadalafil, self-injection or urethral medicines, vacuum erection devices, and penile implants [2].
What the research says
Oral PDE5 inhibitors beat placebo, and low-dose sildenafil and tadalafil rank among the best. A network meta-analysis of 179 randomized trials (50,620 patients) found every PDE5 inhibitor significantly more effective than placebo. Sildenafil 25 mg had a 98% probability of being the most effective at improving erectile function scores, and tadalafil 10 mg and 20 mg also performed well (Madeira et al., World J Urol, 2021).
Smoking, alcohol, and physical activity all show dose-dependent links with ED. A meta-analysis of 89 population-based studies (348,865 participants) found that ED risk rose with more cigarette smoking and fell with more physical activity, while alcohol showed a curved pattern in which moderate intake was linked to lower risk (Allen & Walter, J Sex Med, 2018).
Most supplements have little proof behind them. A network meta-analysis of 15 randomized trials (1,000 men) found that most nutraceuticals showed no significant benefit over placebo. L-arginine and an L-carnitine mix appeared somewhat useful, mainly when added to a PDE5 inhibitor in men with an organic cause (Barbonetti et al., J Sex Med, 2024).
Key Facts at a Glance
Question | Answer |
What it is | Not being able to get and keep an erection firm enough for sexual activity; also called impotence [1] |
How common | More than half of men aged 40 to 70 experience some form of ED; it affects men of all ages [1] [2] |
When is it a problem | When difficulty is consistent and lasts more than three months — occasional trouble is normal [2] |
Main symptoms | Trouble getting an erection, trouble keeping an erection, wanting sex less [1] |
Main causes | Physical conditions (heart disease, diabetes, high blood pressure, low testosterone) and mental health factors (stress, anxiety, depression) — often both together [1] |
Why it matters | Ongoing ED can signal an underlying condition and is linked to heart disease risk [1] [2] |
How it is treated | Lifestyle changes, counseling, oral medicines, self-injection or urethral medicine, vacuum devices, penile implants [2] |
What an Erection Needs to Work
Getting an erection is a complicated process. It involves the brain, hormones, emotions, nerves, muscles, and blood vessels. A problem with any of these pieces can lead to erectile dysfunction.
Inside the penis are two cylinder-shaped, spongelike structures called the corpora cavernosa. During sexual arousal, nerve impulses increase blood flow to both cylinders. This sudden influx of blood expands, straightens, and stiffens the penis to create an erection.
Stress and mental health concerns can cause erectile dysfunction or make it worse. Sometimes the cause is both physical and mental. For example, a minor physical condition that slows your sexual response might cause worry about keeping an erection — and that anxiety can add to the problem.
Symptoms
Having trouble getting an erection once in a while is common. Erectile dysfunction symptoms are ongoing and often get worse over time. They might include:
Trouble getting an erection
Trouble keeping an erection
Wanting sex less
When to See a Doctor
Your main healthcare professional is a good place to start when you have erection issues. See your healthcare professional if you worry about your erections or have other sexual problems — such as ejaculating sooner than you want (premature ejaculation) or later than you want (delayed ejaculation), if you have diabetes, heart disease, or another health condition that might be linked to erectile dysfunction, or if you have other symptoms along with erectile dysfunction.
Talking about erectile dysfunction can feel awkward, but it is worth doing. Ongoing erection problems can cause stress, affect self-confidence, and add to challenges with a partner. Problems getting or keeping an erection can also be a sign of a health condition that needs treatment and a risk factor for heart disease. Sometimes, treating an underlying condition fixes the erectile dysfunction.
Causes
Male sexual arousal is complex. It involves the brain, hormones, emotions, nerves, muscles, and blood vessels. Erectile dysfunction can result from a problem with any of these.
Physical Causes
Common physical causes of erectile dysfunction include:
Heart disease
Clogged blood vessels, also called atherosclerosis
High cholesterol
High blood pressure
Diabetes
Obesity
Metabolic syndrome, which involves higher blood pressure, high insulin levels, body fat around the waist, and high cholesterol
Parkinson's disease
Multiple sclerosis
Certain prescription medicines
Tobacco use
Peyronie's disease, which can cause pain during sex, a bent penis, a penis that gets shorter with erection, or a lump or bump in the penis
Overuse of alcohol and use of illicit drugs
Sleep conditions
Treatments for prostate cancer or enlarged prostate
Surgeries or injuries that affect the pelvic area or spinal cord
Low levels of the hormone testosterone
Mental Health Causes
The brain plays a key role in getting sexually excited, which starts an erection. Things that can get in the way of sexual feelings and cause or add to erectile dysfunction include depression, anxiety, or other mental health conditions; stress; and issues with a partner.
Risk Factors
As you get older, erections might take longer to start and might not be as firm. You might need more direct touch to your penis to get and keep an erection. But erectile dysfunction is not a typical part of aging.
Risk factor | What it means |
Medical conditions | Diabetes and heart conditions are big risk factors [1] |
Tobacco use | Lowers blood flow to veins and arteries; over time it can cause ongoing conditions that lead to ED [1] |
Being overweight | Especially obesity, which can cause or worsen ED [1] |
Certain medical treatments | Prostate surgery or radiation treatment for cancer [1] |
Injuries | Especially injuries that damage the nerves or arteries that control erections [1] |
Medicines | Antidepressants, antihistamines, and medicines for high blood pressure, pain, or prostate conditions [1] |
Mental health conditions | Stress, anxiety, and depression [1] |
Alcohol and drug use | Especially long-term drug use or heavy drinking [1] |
Complications
Complications from erectile dysfunction can include a poor sex life, depression, stress or anxiety, embarrassment or low self-esteem, relationship issues, and not being able to get your partner pregnant.
Prevention
The best way to prevent erectile dysfunction is to make healthy lifestyle choices and to manage any health conditions. This means working with your healthcare professional to manage diabetes, heart disease, or other ongoing conditions, getting regular checkups and screening tests, stopping smoking, limiting or avoiding alcohol, not using illicit drugs, exercising regularly, finding ways to ease stress, and getting help for anxiety, depression, or other mental health issues.
How Erectile Dysfunction Is Diagnosed
Diagnosing erectile dysfunction involves a physical exam and answering questions about your medical and sexual history. If you have ongoing health conditions that could be involved, you might need other tests, or a referral to a specialist — a urologist (who focuses on the male reproductive system) or an endocrinologist (who focuses on hormones).
Test | What it does |
Physical exam | May involve an exam of your penis and testicles and checking for nerve damage [2] |
Blood tests | A blood sample can check for signs of heart disease, diabetes, low testosterone, and other health conditions [2] |
Urine tests (urinalysis) | Like blood tests, urine tests can show signs of diabetes and other health conditions [2] |
Ultrasound | Sound waves look at the blood vessels that send blood to the penis; sometimes done after an injection of medicine that stimulates blood flow [2] |
Mental health exam | Questions to screen for depression and other mental health issues that can cause ED [2] |
Treatment Options
Treatment depends on the cause, how severe the ED is, and whether you have underlying health conditions. Your healthcare professional can walk you through the pros and cons of each option. What you prefer matters, and what your partner wants may also shape the choice.
Oral Medicines
Medicines taken by mouth work for many people with erectile dysfunction. They include sildenafil (Revatio, Viagra), tadalafil (Adcirca, Cialis, and others), vardenafil, and avanafil (Stendra).
These medicines relax muscles in the penis and increase blood flow in response to sexual stimulation. The pills alone do not cause an erection. They make it easier to get an erection with sexual stimulation.
People who can get and keep erections without help do not need erectile dysfunction medicines — these pills will not improve sex for them.
The medicines vary in dosage, how long they work, and side effects. Possible side effects include flushing, stuffy nose, headache, vision changes, backache, and stomach upset. The medicines might not work right away and do not work for everyone. They might work less well after prostate surgery and for people with diabetes and other conditions.
Before taking any medicine for erectile dysfunction, get your healthcare professional's OK — including supplements and herbal remedies bought without a prescription. Some erectile dysfunction medicines might cause harm if you take nitrate drugs such as nitroglycerin (Nitro-Dur, Nitrostat), isosorbide mononitrate (Monoket), or isosorbide dinitrate (Isordil, Bidil) used for chest pain; if you have heart disease or heart failure; or if you have very low blood pressure.
Other Medicines
Self-injection therapy uses a fine needle to place alprostadil (Caverject, Edex) into the base or side of the penis. The dose is set for an erection lasting no longer than an hour. Some shots may also contain other medicines (BiMix, Tri-Mix). Side effects can include mild bleeding from the injection site and an erection that lasts too long, called priapism. Rarely, fibrous tissue can form where you give yourself the shot. A member of your healthcare team shows you how to give the injection, and pain from the very fine needle is most often minor.
Intraurethral medicine involves placing medicine inside the urethra, the tube that carries urine from the body, using a special applicator at the tip of the penis. The medicine increases blood flow to cause an erection, which most often starts within 10 minutes and lasts between 30 and 60 minutes. Side effects can include a burning feeling in the penis and minor bleeding in the urethra.
Testosterone replacement can help when the hormone testosterone is low. More commonly, it is used alongside other treatments for erectile dysfunction.
Penis Pumps, Surgery, and Implants
A penis pump, also called a vacuum erection device, is a plastic tube that fits over the penis. A hand- or battery-powered pump attaches to the tube and sucks air out, creating a vacuum that pulls blood into the penis. Once you get an erection, you place a rubber tension ring around the base of the penis. This holds in the blood and helps you keep the erection, then you remove the vacuum device.
The erection most often lasts long enough to have sex, and you remove the tension ring afterward. Your penis may bruise, the band might weaken ejaculation, and your penis might feel cold to the touch.
Penile implants involve surgery to place an implant into the penis. Some devices are inflatable, letting you control when and how long you have an erection. A semirigid rod keeps the penis firm but can be bent away from the body for sex and toward the body when you do not want it to show. Healthcare professionals usually suggest implants only after you have tried other treatments first. People who have tried other therapies without success tend to be happy with their implants. As with any surgery, there is a risk of complications such as infection, and surgery might be delayed if you have a urinary tract or other infection.
Counseling
If stress, anxiety, or depression is causing your erectile dysfunction — or if the condition is creating stress and issues with your partner — your healthcare professional may suggest that you, or you and your partner, see a counselor.
Lifestyle and Home Remedies
For many people, lifestyle choices cause erectile dysfunction or make it worse. Helpful steps include quitting smoking — getting help such as nicotine replacement gum or lozenges, or a prescription medicine, if quitting is hard; losing excess weight, since being overweight can cause or worsen ED; being more physically active, because exercise eases stress, helps you lose weight, and increases blood flow; getting treatment for alcohol or drug overuse; and working through issues with your partner, possibly with couples counseling.
Alternative Medicine
Before using any supplement, check with your healthcare professional to make sure it is safe for you, especially if you have ongoing health conditions. Some alternative products that claim to work for erectile dysfunction can cause harm.
The Food and Drug Administration has issued warnings about some types of "herbal viagra" because they may contain harmful ingredients not listed on the package, may have unknown dosages, or may have been tainted during manufacturing. Some of these supplements can interact with prescription medicines and cause very low blood pressure — a special danger for anyone taking nitrates.
Coping and Support
No matter the cause, erectile dysfunction can be a source of stress for you and your partner. It helps to remember that occasional erection problems are common, and assuming the issue will last forever — or seeing it as a sign that something is wrong with you — can cause stress that makes ED worse.
Involving your sexual partner matters. Your partner might think difficulty with erections means you have less desire for sex. Assure your partner that this is not true, and talk openly about your condition. Treatment can work better when you involve your partner.
Do not ignore stress, anxiety, or other mental health concerns. Talk to your healthcare professional or a mental health professional to deal with these issues.
Preparing for Your Appointment
You will likely start by seeing your main healthcare professional, who may send you to a specialist — a urologist who specializes in male genital problems, or an endocrinologist who specializes in the hormonal system. Take your partner with you if you can; your partner can help inform your healthcare professional and remember the information you receive.
Before your visit, make a list of your symptoms including any that may not seem linked to erectile dysfunction and when they began, key personal information including major stresses or recent life changes, all medicines, vitamins, herbal remedies, and supplements you take with dosages, and the questions you want to ask.
Questions to ask include: What is the most likely cause of my erection troubles? What are other possible causes? What tests do I need? Is my erectile dysfunction most likely to go away or to last? What are the treatments and which do you suggest? Are there printed materials or websites I should use?
Your healthcare professional is likely to ask questions as well, such as what other health concerns or ongoing conditions you have, whether your erectile problems happen sometimes, often, or all the time, whether you want sex less than you used to, whether you get erections during masturbation, with a partner, or while sleeping, whether your partner has sexual problems, whether you are anxious, depressed, or under stress, how much alcohol you drink, whether you use illicit drugs, and what seems to help or make your erectile dysfunction worse.
Conclusion and Next Steps
Erectile dysfunction is common, it is often a warning sign of an underlying health condition, and it is very treatable. The most important step is the hardest one: talking to your healthcare professional, even when it feels awkward. Occasional trouble is normal — a consistent problem lasting more than three months is what deserves attention.
Healthy habits such as quitting smoking, staying active, managing your weight, and easing stress help both your erections and your heart. And because ED can be connected to heart disease, diabetes, and blood pressure, a checkup for erection problems may uncover a health issue worth catching early.
Option | How it works | Best for |
Lifestyle changes | Quit smoking, exercise, lose weight, manage stress and alcohol | First step for everyone; often as powerful as medication [2] |
Counseling | Individual or couples counseling | When stress, anxiety, depression, or partner issues play a role [2] |
Oral medicines | Relax penis muscles and increase blood flow with stimulation | Many men; not safe with nitrate drugs [2] |
Self-injection / urethral medicine | Alprostadil placed by injection or applicator | When oral medicines do not work [2] |
Vacuum device | Tube and pump pull blood into the penis; ring holds it | When medicines do not work or are not right for you [2] |
Penile implant | Surgical device, inflatable or semirigid | After other treatments have been tried [2] |
Take action: If you have consistent erection trouble, schedule a checkup with your healthcare professional — and mention any heart or blood pressure symptoms.
Frequently Asked Questions
What is erectile dysfunction?
Erectile dysfunction, also called impotence, means not being able to get and keep an erection firm enough for sexual activity. Having trouble from time to time is common, but ED refers to difficulty that is ongoing, consistent, and usually lasting more than three months.
Is erectile dysfunction a normal part of aging?
No. As you get older, erections might take longer to start and might not be as firm, but erectile dysfunction is not a typical part of aging. Risk increases with age mainly because conditions like heart disease and diabetes become more common.
What causes erectile dysfunction?
Causes fall into two groups that often overlap. Physical causes include heart disease, clogged blood vessels, high cholesterol, high blood pressure, diabetes, obesity, low testosterone, certain prescription medicines, tobacco use, alcohol or drug overuse, and injuries or surgeries affecting the pelvic area or spinal cord. Mental health causes include depression, anxiety, stress, and issues with a partner.
How is erectile dysfunction diagnosed?
A healthcare professional takes your medical and sexual history, does a physical exam, and may order blood tests, urine tests, an ultrasound of the blood flow to the penis, and a mental health exam to look for underlying conditions such as heart disease, diabetes, or low testosterone.
What are the treatment options for erectile dysfunction?
Options include lifestyle changes and quitting smoking, counseling, oral medicines such as sildenafil and tadalafil (which need a doctor's OK and are unsafe with nitrate drugs), self-injection or urethral alprostadil, testosterone replacement when levels are low, a vacuum erection device with a tension ring, and penile implants, which are usually reserved for men who have not had success with other treatments.
Trusted External Resources
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK): Erectile Dysfunction (ED)
Urology Care Foundation: Erectile Dysfunction (ED)
References
Mayo Clinic Staff. Erectile dysfunction: Symptoms and causes. Mayo Clinic. March 1, 2025. https://www.mayoclinic.org/diseases-conditions/erectile-dysfunction/symptoms-causes/syc-20355776
Mayo Clinic Staff. Erectile dysfunction: Diagnosis and treatment. Mayo Clinic. March 1, 2025. https://www.mayoclinic.org/diseases-conditions/erectile-dysfunction/diagnosis-treatment/drc-20355782
National Institute of Diabetes and Digestive and Kidney Diseases. Erectile Dysfunction (ED). NIDDK. Last reviewed October 2024. https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction/all-content
Urology Care Foundation. Erectile Dysfunction (ED). Urology Care Foundation. Updated June 2018. https://www.urologyhealth.org/urology-a-z/e/erectile-dysfunction-(ed)
Madeira CR, Tonin FS, Fachi MM, et al. Efficacy and safety of oral phosphodiesterase 5 inhibitors for erectile dysfunction: a network meta-analysis and multicriteria decision analysis. World J Urol. 2021;39(3):953-962. PMID 32388784. https://doi.org/10.1007/s00345-020-03233-9
Allen MS, Walter EE. Health-Related Lifestyle Factors and Sexual Dysfunction: A Meta-Analysis of Population-Based Research. J Sex Med. 2018;15(4):458-475. PMID 29523476. https://doi.org/10.1016/j.jsxm.2018.02.008
Barbonetti A, Tienforti D, Antolini F, et al. Nutraceutical interventions for erectile dysfunction: a systematic review and network meta-analysis. J Sex Med. 2024;21(11):1054-1063. PMID 39279185. https://doi.org/10.1093/jsxmed/qdae123
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