The Link Between Erectile Dysfunction and Heart Attacks That Every Singaporean Man Needs to Know
Last updated: 26 Aug 2026
Most men who experience erectile dysfunction treat it as a private inconvenience. Something to manage quietly, ideally with a prescription, and certainly not something to discuss with their GP in the context of heart health.
This is a mistake. And for some men, it is a dangerous one.
A landmark study published in Circulation, the journal of the American Heart Association, found that men with erectile dysfunction had a twofold increase in heart attacks, strokes, and cardiovascular death compared to men without ED, even after controlling for traditional risk factors like obesity, hypertension, diabetes, and smoking. The researchers concluded that ED should be used as an independent predictor of cardiovascular health.
In Singapore, a population-based study of 729 men over the age of 30 found that 51.3 per cent experienced some degree of erectile dysfunction. Approximately 42.8 per cent of men in their 40s and 77.4 per cent of men in their 60s reported symptoms. A 2018 study in Proceedings of Singapore Healthcare described erectile dysfunction among Singaporean men with cardiovascular risk factors as "a hidden epidemic."
ED is not just a bedroom problem. It is, in many cases, the earliest visible sign of systemic vascular disease that will eventually affect your heart and brain.
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Why the Same Disease Causes Both
The connection between erectile dysfunction and heart disease is not a coincidence. It is the same disease process manifesting in different arteries at different times.
An erection requires a rapid increase in blood flow to the penis. This happens when the smooth muscle in the penile arteries relaxes, the vessels dilate, and blood rushes in. This process is entirely dependent on healthy blood vessel function, specifically the ability of the endothelium (the inner lining of blood vessels) to produce nitric oxide, which signals the vessels to relax and dilate.
When atherosclerosis develops (the gradual buildup of fatty plaques inside artery walls), it impairs endothelial function. The vessels become stiffer, less responsive, and less able to dilate on demand. Blood flow is reduced. The arteries narrow.
Here is the critical insight: the arteries in the penis are significantly smaller than the arteries in the heart. Penile arteries are typically 1 to 2 millimetres in diameter. Coronary arteries are 3 to 4 millimetres. This means that the same degree of atherosclerosis that narrows a penile artery enough to cause ED has not yet narrowed a coronary artery enough to cause chest pain or a heart attack.
ED shows up first because the smaller arteries are affected first. It is an early warning from blood vessels that are experiencing the same disease that will eventually reach larger, more critical arteries. Cardiologists sometimes describe erectile dysfunction as a "penile stress test" for the cardiovascular system.
The average time gap between the onset of ED and a major cardiovascular event is estimated at two to five years. This window is not a countdown to disaster. It is an opportunity. Men who take ED seriously as a cardiovascular signal and act on it have years of lead time to address the underlying vascular disease before it causes a heart attack or stroke.
The Shared Risk Factors
ED and cardiovascular disease are not just connected by the same pathology. They share the same risk factors, almost without exception.
- Diabetes - Diabetic men are three times more likely to develop ED than non-diabetic men. Chronically elevated blood sugar damages blood vessel walls and impairs nerve function, both of which are essential for erections. A study of Chinese men with Type 2 diabetes found that those with ED had double the rate of serious cardiac events over seven years compared to those without.
- High blood pressure - Hypertension damages the endothelium and reduces blood vessel elasticity. It is one of the most common causes of organic ED and one of the most common risk factors for heart disease.
- High cholesterol - Elevated LDL cholesterol drives the plaque formation that narrows arteries throughout the body, including in the penis. The process begins silently and progresses over years.
- Smoking - Smoking directly damages the endothelium, accelerates atherosclerosis, and is independently associated with both ED and cardiovascular disease.
- Obesity and visceral fat - Excess abdominal fat promotes inflammation, insulin resistance, and endothelial dysfunction. Normal-weight individuals with hidden visceral fat are also at risk.
- Sedentary lifestyle - Physical inactivity is associated with poorer vascular function, lower VO2 max, and increased cardiovascular risk.
- Metabolic syndrome - The cluster of elevated blood sugar, elevated blood pressure, elevated triglycerides, low HDL, and abdominal obesity is both a strong predictor of ED and a strong predictor of heart disease.
If you have ED, the probability that one or more of these risk factors is present is very high. If you have several of them, your cardiovascular risk is not additive. It is multiplicative.
Why Most Men Do Not Make the Connection
There are several reasons men with ED do not seek cardiovascular evaluation, and all of them are addressable.
Embarrassment. Many men find it difficult to discuss sexual function with a doctor. This is understandable but clinically counterproductive. At Regis Medical, our Doctors discuss ED routinely as part of men's health consultations. It is a medical symptom, not a personal failing. We approach it with the same clinical objectivity as any other health concern.
Assumption that it is age-related. Men in their 40s and 50s often attribute ED to "getting older" and accept it as inevitable. While erectile function does decline with age, sudden or progressive ED in a man under 60 should not be dismissed as normal ageing without investigation. The younger you are when ED appears, the stronger the association with cardiovascular disease.
Online prescriptions without evaluation. The rise of telemedicine platforms offering ED medication without a physical consultation or blood tests means many men are treating the symptom without investigating the cause. Taking sildenafil or tadalafil for ED without checking your blood pressure, cholesterol, blood sugar, and cardiovascular risk is like taking painkillers for chest pain without checking your heart. The medication may work in the short term, but it does nothing to address the vascular disease progressing behind the scenes.
Belief that ED is psychological. While psychological factors (stress, anxiety, depression, relationship issues) do cause ED, particularly in younger men, studies show that even men with predominantly psychological ED have elevated cardiovascular risk. The distinction between "physical" and "psychological" ED is often less clear than people assume, and a cardiovascular evaluation is warranted regardless.
What You Should Do If You Have ED
If you are experiencing erectile dysfunction, particularly if it has developed gradually, worsened over time, or appeared alongside other symptoms like fatigue, weight gain, or reduced exercise tolerance, the most important step is a comprehensive health evaluation.
This does not mean asking a telemedicine app for a prescription. It means sitting down with a doctor who will assess your cardiovascular risk factors alongside your sexual health.
At Regis Medical men's health clinic, a men's health consultation for ED includes a detailed medical history including:
- Family history of heart disease and diabetes,
- Blood pressure measurement,
- Blood tests including fasting glucose, HbA1c, lipid profile (LDL, HDL, triglycerides), liver function, kidney function, and testosterone levels,
- Discussion about lifestyle factors (sleep, stress, exercise, diet, smoking, alcohol),
- Assessment of whether ED medication is appropriate and safe given your cardiovascular profile.
This evaluation takes less than an hour. It can identify risk factors you did not know you had. And it can genuinely save your life.
ED Is a Warning. Use It
The research is unambiguous. Erectile dysfunction is an independent predictor of cardiovascular events. Men with ED are twice as likely to have a heart attack or stroke. The association is strongest in men under 50, the age group least likely to suspect cardiovascular disease.
If you have ED, do not treat it as a standalone problem. Treat it as your body sending you an early signal that your blood vessels are under strain. That signal gives you a window of two to five years to identify and address the underlying vascular disease before it reaches your heart.
A conversation with our doctor, a set of blood tests, and a comprehensive health screening are all it takes to turn that warning into action. The alternative is to ignore the signal and hope for the best.
Your body gave you an early warning. The question is whether you will use it.
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