The heart warning that may appear years before chest pain

When a man begins having trouble getting or maintaining an erection, he may chalk it up to getting older.

He may blame stress, fatigue or declining testosterone. Or he turns to a little blue pill and considers the problem solved.

But what if his body is trying to tell him something far more important?

Something about his heart health.

A major scientific review is reinforcing a connection doctors have recognized for years: Erectile dysfunction (ED) can be an early warning sign of cardiovascular disease, sometimes appearing years before more familiar symptoms.

And researchers are drawing attention to a remarkable connection involving a molecule your body depends on for healthy blood flow.

That molecule is nitric oxide.

Quick Answer: Can erectile dysfunction warn of heart disease?

Yes. Research shows that erectile dysfunction can appear two to five years before clinically apparent cardiovascular disease. A 2026 review published in Nature Reviews Urology reinforces the connection, identifying blood vessel dysfunction, inflammation and atherosclerosis as important shared causes. Nitric oxide plays a central role because it helps blood vessels relax and supports the blood flow needed for both erections and cardiovascular health.

Why erectile problems can appear before heart symptoms

In a 2026 review published in Nature Reviews Urology, researchers from Copenhagen University Hospital examined the evidence connecting erectile dysfunction with cardiovascular disease.

Their conclusion is important: ED shouldn’t automatically be dismissed as a normal consequence of aging or treated exclusively as a sexual performance problem.

It can be an early indicator of blood vessel damage.

Here’s why.

An erection depends on healthy arteries delivering enough blood to the penis. But the penile arteries are considerably smaller than the coronary arteries that supply your heart.

That means circulation problems may become noticeable in the smaller arteries first.

Think of it this way: A developing problem with blood flow may interfere with erectile function long before it’s severe enough to produce chest pain or other symptoms of coronary artery disease.

This helps explain why studies have found that erectile problems often precede recognizable cardiovascular disease by two to five years.

That’s potentially valuable time to uncover and address hidden cardiovascular risks.

The nitric oxide connection most men don’t know about

One of the most important connections between sexual performance and heart health involves nitric oxide.

Your body produces this signaling molecule to help blood vessels relax and widen, allowing blood to flow more freely.

It’s especially important during an erection.

When a man becomes sexually aroused, nerves release nitric oxide, setting off a series of chemical reactions that relax smooth muscle in the penis and allow blood to fill the erectile tissues.

But nitric oxide also performs essential functions throughout the cardiovascular system.

The endothelial cells lining your blood vessels produce nitric oxide to help regulate blood vessel tone, maintain circulation and protect vascular health.

When these cells stop functioning properly, the condition is known as endothelial dysfunction.

And it’s one of the earliest changes associated with atherosclerosis — the process in which plaque accumulates inside arteries.

The new review identifies endothelial dysfunction, low-grade inflammation and atherosclerosis as major biological connections between ED and cardiovascular disease.

In other words, the same problems interfering with a man’s sexual performance may already be affecting the blood vessels supplying his heart.

What earlier research reveals about the danger

The connection isn’t new. Previous research has shown that erectile dysfunction can be a serious warning sign for a man’s heart, even before cardiovascular symptoms become obvious.

For example, a meta-analysis involving more than 92,000 men found that, compared with men without ED, those experiencing erectile dysfunction had:

• A 44% higher risk of cardiovascular events.
• A 62% higher risk of heart attack.
• A 39% higher risk of stroke.
• A 25% higher risk of death from any cause.

Those are substantial differences.

The researchers also found that the relationship between erectile dysfunction and cardiovascular risk was particularly meaningful in younger men.

That’s worth emphasizing because men in their 40s and 50s may be especially likely to assume occasional erectile problems are related to stress or simply getting older.

Of course, not every case of ED results from damaged blood vessels. Medications, hormonal problems, neurological conditions and psychological factors can also contribute.

But persistent erectile difficulties deserve attention, particularly when other cardiovascular risk factors are present.

Why treating ED isn’t the same as treating the underlying problem

Medications such as sildenafil (Viagra) and tadalafil (Cialis) can be effective treatments for erectile dysfunction.

They work by enhancing the effects of nitric oxide signaling, helping blood vessels relax and improving blood flow to the penis during sexual stimulation.

But improving erectile function doesn’t necessarily mean the underlying cardiovascular problem has been resolved.

A man may regain sexual performance while still having high blood pressure, insulin resistance, elevated cholesterol or developing arterial plaque.

That’s why cardiovascular specialists increasingly view ED as an opportunity to identify health problems before they become more serious.

The Princeton IV consensus recommendations, developed by specialists in sexual medicine and cardiovascular health, encourage cardiovascular risk evaluation in men experiencing ED.

For some men, that evaluation may include coronary artery calcium scoring, a noninvasive scan that can reveal calcified plaque in the arteries supplying the heart.

The 2026 review also discusses echocardiography as a potentially useful tool for evaluating certain patients.

These aren’t tests every man with ED automatically needs. But they reinforce why sexual symptoms deserve a place in conversations about heart health.

Supporting nitric oxide and healthier circulation

Because nitric oxide is so important to both erectile function and cardiovascular health, supporting the body’s ability to produce and use it makes sense.

And there are several ways to do that.

Get moving. Physical activity stimulates the endothelium, helping maintain nitric oxide signaling and blood vessel function. Even regular brisk walking can help support healthier circulation. And research suggests that maintaining healthy erectile tissue and function involves more than simply improving blood flow.

Eat more nitrate-rich vegetables. Beets, spinach, arugula and other leafy greens provide dietary nitrates that the body can convert into nitric oxide through a separate biological pathway.

Don’t overlook oral health. Beneficial bacteria in your mouth help convert dietary nitrates into nitrites, an important step in nitric oxide production. Frequent use of strong antibacterial mouthwash may interfere with this process.

Pay attention to metabolic health. High blood sugar, excess abdominal fat and chronic inflammation can contribute to endothelial dysfunction and impair nitric oxide availability.

And perhaps most importantly, don’t simply treat erectile difficulties as an inconvenience to be overcome.

If the problem is new, persistent or worsening, discuss it with your healthcare provider and ask whether a cardiovascular evaluation is appropriate.

Erectile dysfunction isn’t proof that heart disease is present. But it can be an early signal that something is interfering with healthy circulation.

For some men, recognizing that connection could mean uncovering cardiovascular problems years before a heart attack or other serious event occurs.

Sources:

Erectile dysfunction and cardiovascular health — Nature Reviews Urology

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

Princeton IV consensus guidelines: PDE5 inhibitors and cardiac health — The Journal of Sexual Medicine

Erectile Dysfunction as an ASCVD Risk-Enhancing Factor: Highlights From the Princeton IV Consensus Guidelines — American College of Cardiology

FAQ: About Erectile Dysfunction and Heart Health