Erectile Dysfunction Is a Cardiovascular Symptom

Most men who seek help for erectile dysfunction want a prescription. That is a reasonable thing to want, and for most of them it is available and it works.

But handing over the tablets and stopping there misses something important, and it is the reason this is worth writing about. Erectile dysfunction is, in the majority of cases, a blood vessel problem. And blood vessels are not local. What is happening in the penile arteries is usually happening elsewhere.

The size argument

The clearest way to explain this is by diameter.

The arteries supplying the penis are roughly 1 to 2mm across. The coronary arteries supplying the heart are about 3 to 4mm. The carotid arteries to the brain are larger still.

Atherosclerosis — the furring and stiffening of artery walls — is a systemic process. It does not select one organ. But a given amount of narrowing blocks a small pipe before a large one, which means the smallest arteries produce symptoms first.

That is why erectile dysfunction is frequently the first noticeable sign of a process that has been quietly underway for years. It is not a coincidence and it is not incidental. It is the same disease, presenting where it shows up soonest.

What the research shows

Studies following men with erectile dysfunction have consistently found that a significant cardiac event — a heart attack, angina, or a stroke — tends to follow around three to five years later in those who go on to have one.

Three to five years is an unusually generous warning in medicine. Most cardiovascular disease announces itself with the event itself. This announces itself years ahead, in a way that brings men to a doctor.

The tragedy is how often that window is spent on a repeat prescription and nothing else.

What else causes it

Not all erectile dysfunction is vascular, and a proper assessment sorts this out rather than assuming.

• Medication is a very common and highly reversible cause. Beta blockers, thiazide diuretics, some antidepressants and finasteride are all frequent culprits. Changing a drug sometimes resolves the problem entirely
• Diabetes, through both vascular and nerve damage — and ED is sometimes what leads to the diagnosis
• Psychological factors — anxiety, depression, relationship difficulty and performance anxiety are real causes, not a diagnosis of exclusion
• Low testosterone, which is a less common cause than the internet suggests but worth excluding properly
• Alcohol, smoking, and sleep apnoea

The question that sorts it fastest

Do you still get spontaneous erections — overnight or on waking?

If you do, the plumbing works, and the cause is more likely psychological or situational. If those have gradually disappeared over months or years, that gradual loss points towards a physical, usually vascular, cause.

The pattern of onset matters too. Sudden onset tied to a specific event or partner suggests a psychological cause. Gradual decline over a year or more suggests a vascular one.

What should actually be checked

Any assessment of new erectile dysfunction should include:

• Blood pressure
• Cholesterol, including the full lipid profile rather than total cholesterol alone
• HbA1c, to identify diabetes or pre-diabetes
• Morning testosterone, taken before 11am — an afternoon sample is not interpretable
• Thyroid function, and kidney and liver function
• A formal cardiovascular risk calculation, which is what turns the individual numbers into a decision

Our Well Man panel covers this set in a single visit.

The part that is genuinely good news

Everything that improves erectile function also improves cardiovascular health, and the reverse is equally true. This is one of the few areas of medicine where the motivating outcome and the important outcome point in exactly the same direction.

Stopping smoking improves vascular function within weeks. Regular aerobic exercise has good trial evidence for erectile function specifically, not merely as general advice. Weight loss, reducing alcohol, and treating blood pressure and cholesterol all contribute.

Men who have spent a decade ignoring cholesterol advice will frequently act on it when the conversation is framed around something that affects them daily. That is not a failure of priorities. It is a fact about motivation worth using.

An important safety point

Sildenafil, tadalafil and similar drugs must never be taken with nitrates — including GTN spray for angina, isosorbide, and recreational poppers. The combination can cause a catastrophic drop in blood pressure.

Anyone with unstable angina, a recent heart attack or stroke, or significant heart failure needs assessment before these are prescribed at all. This is one of the reasons buying them without a consultation is a poor idea, quite apart from what is actually in the tablets.

Where we come in

A 20-minute consultation is enough time to take the history properly, work out which type of erectile dysfunction this is, review your medication list, and arrange the bloods that matter — rather than issuing a prescription and moving on.

Where treatment is appropriate we prescribe it, as a private prescription to your own pharmacy. But the consultation covers the other question too, because that is the one that changes what happens in five years.

See our erectile dysfunction treatment page for what is available, or book a men's health consultation. Neither requires you to explain yourself to a receptionist first.