Is ED always caused by low testosterone?

ED is not always caused by low testosterone. Low testosterone drives libido (desire), while vascular disease drives mechanics (performance). Both can be involved at the same time, which is why we test both hormone and vascular markers in men with ED.

Can ED really predict a heart attack?

Yes, ED can predict a heart attack. The penile arteries are smaller than coronary arteries, so plaque shows symptoms there first. Studies show men with ED have a higher risk of major cardiac events in the years that follow, especially when ED appears before age 50.

What is "porn induced" ED and is it real?

Porn induced ED, sometimes called PIED, is real in young men under 30 whose plumbing tests as healthy. It is thought to involve dopamine desensitization from heavy high-speed porn use. The fix is reducing exposure for several weeks, not medication.

Is daily Cialis safe long term?

Daily Cialis (tadalafil) is generally safe long term for healthy men. Studies of chronic PDE5 inhibitor use suggest possible benefits for heart and prostate health and improved blood flow. We monitor blood pressure and any drug interactions before starting it.

Can lifestyle alone reverse ED?

Lifestyle alone can reverse mild to moderate ED in many men. Sleep above seven hours, regular cardio, strength training, weight loss, less alcohol, and quitting smoking all improve nitric oxide and endothelial function. For more severe ED, we layer medication on top of lifestyle.

Does ED mean I need a stress test?

ED does not always mean you need a stress test, but it does mean you need a vascular workup. We start with ApoB, Lp(a), blood pressure, and a careful family history. We add imaging like a CT Coronary Angiogram (CTA) when the result will change the plan.

How does diabetes affect ED?

Diabetes affects ED by damaging both the small blood vessels and the nerves that control erections. High blood sugar speeds up plaque formation and lowers nitric oxide. Tight blood sugar control and treating insulin resistance early protects future erectile function.

Is shockwave therapy proven?

Shockwave therapy has growing evidence for mild to moderate vascular ED. The data suggests it can improve erections in many men by promoting new blood vessel growth and breaking up small plaque. It is not a quick fix and usually takes 6 to 12 sessions.

How does nitric oxide actually create an erection?

Nitric oxide creates an erection by signaling smooth muscle in the penile arteries to relax. When the vessels relax, they widen and allow blood to fill the spongy tissue. Healthy endothelium plus a strong nervous system signal is what makes the system work.

Why are the penile arteries the first to show damage?

The penile arteries are the first to show damage because they are narrow, around 1 to 2 millimeters wide. The same plaque that would barely affect a 4 millimeter coronary artery can choke off a 1 millimeter penile artery. ED is a small-vessel symptom of a big-vessel problem.

What is the link between ED and Alzheimer's disease?

The link between ED and Alzheimer's disease is small-vessel disease in the brain, which shares mechanisms with ED in the penis. Both involve damaged endothelium, low nitric oxide, and chronic inflammation. Treating vascular risk early may protect both function and cognition.

Does sleep apnea cause ED?

Yes, sleep apnea, a condition where breathing stops repeatedly during sleep, can cause or worsen ED. It lowers oxygen, raises blood pressure, and damages endothelial function. It also lowers testosterone. Treating sleep apnea often improves erections within weeks.

What role does alcohol play in ED?

Alcohol plays a complex role in ED. Light drinking has minimal effect, but regular heavy use lowers testosterone, raises estrogen via aromatase (an enzyme that converts testosterone to estrogen), worsens sleep, and damages the endothelium. Cutting back is one of the most underrated ED interventions.

How do we treat ED in men who cannot take PDE5 inhibitors?

We treat ED in men who cannot take PDE5 inhibitors with options like vacuum erection devices, intraurethral suppositories, intracavernosal injections (low-dose prostaglandin shots), shockwave therapy, and PT-141. The right choice depends on the cause of ED and your other medications.

What is intracavernosal injection therapy?

Intracavernosal injection therapy is a small injection of medication directly into the side of the penis using a fine needle. It works for most men, even when pills do not, and produces a reliable erection in 5 to 15 minutes. We teach the technique in clinic before home use.

How does insulin resistance worsen ED?

Insulin resistance worsens ED by damaging small blood vessels and nerves and lowering nitric oxide. It also drives fat storage, raises blood pressure, and lowers free testosterone through changes in SHBG (sex hormone binding globulin). Treating insulin resistance often improves erectile function.

Is psychological ED different from vascular ED?

Yes, psychological ED is different from vascular ED. Psychological ED is more common in younger men and shows up as inconsistent performance with normal morning erections. Vascular ED is more constant and tracks with risk factors like blood pressure, cholesterol, and smoking. Many men have both.

What testing should I get before starting ED treatment?

Testing before starting ED treatment should include total and free testosterone, fasting glucose and insulin, ApoB, Lp(a), high-sensitivity CRP, blood pressure, and a careful sleep history. We test both the hormonal and vascular sides so the plan addresses the actual cause.

Will ED come back if I stop treatment?

ED will likely come back if you stop the symptomatic treatment but do not address the root cause. PDE5 inhibitors mask the symptom while you work on vascular health. If we lower ApoB, fix sleep apnea, treat blood pressure, and rebuild fitness, many men eventually need less medication.

Why does Fishtown Medicine pair ED treatment with a cardiac workup?

Fishtown Medicine pairs ED treatment with a cardiac workup because ED is one of the earliest detectable signs of vascular disease. Treating only the symptom misses an opportunity to prevent a heart attack. We treat ED and the heart in one coordinated plan.

Maybe. Low testosterone kills *libido* (desire). Vascular disease kills *performance* (mechanics). Often it is both. We test both.

Does porn induced ED exist?

Yes, in some young men in their 20s, ED is mostly psychological and tied to dopamine desensitization from heavy high-speed internet porn. The plumbing is fine. The brain wiring needs a reset, often called a dopamine reset, plus support if anxiety is involved.

Is Cialis safe long term?

Yes. Studies of men on chronic PDE5 inhibitors suggest possible benefits beyond sexual function, including improved blood flow and lower rates of certain cardiac events. We still review your medications and blood pressure first.

Is ED always caused by low testosterone?

ED is not always caused by low testosterone. Low testosterone drives libido (desire), while vascular disease drives mechanics (performance). Both can be involved at the same time, which is why we test both hormone and vascular markers in men with ED.

Can ED really predict a heart attack?

Yes, ED can predict a heart attack. The penile arteries are smaller than coronary arteries, so plaque shows symptoms there first. Studies show men with ED have a higher risk of major cardiac events in the years that follow, especially when ED appears before age 50.

What is "porn induced" ED and is it real?

Porn induced ED, sometimes called PIED, is real in young men under 30 whose plumbing tests as healthy. It is thought to involve dopamine desensitization from heavy high-speed porn use. The fix is reducing exposure for several weeks, not medication.

Is daily Cialis safe long term?

Daily Cialis (tadalafil) is generally safe long term for healthy men. Studies of chronic PDE5 inhibitor use suggest possible benefits for heart and prostate health and improved blood flow. We monitor blood pressure and any drug interactions before starting it.

Can lifestyle alone reverse ED?

Lifestyle alone can reverse mild to moderate ED in many men. Sleep above seven hours, regular cardio, strength training, weight loss, less alcohol, and quitting smoking all improve nitric oxide and endothelial function. For more severe ED, we layer medication on top of lifestyle.

Does ED mean I need a stress test?

ED does not always mean you need a stress test, but it does mean you need a vascular workup. We start with ApoB, Lp(a), blood pressure, and a careful family history. We add imaging like a CT Coronary Angiogram (CTA) when the result will change the plan.

How does diabetes affect ED?

Diabetes affects ED by damaging both the small blood vessels and the nerves that control erections. High blood sugar speeds up plaque formation and lowers nitric oxide. Tight blood sugar control and treating insulin resistance early protects future erectile function.

Is shockwave therapy proven?

Shockwave therapy has growing evidence for mild to moderate vascular ED. The data suggests it can improve erections in many men by promoting new blood vessel growth and breaking up small plaque. It is not a quick fix and usually takes 6 to 12 sessions.

How does nitric oxide actually create an erection?

Nitric oxide creates an erection by signaling smooth muscle in the penile arteries to relax. When the vessels relax, they widen and allow blood to fill the spongy tissue. Healthy endothelium plus a strong nervous system signal is what makes the system work.

Why are the penile arteries the first to show damage?

The penile arteries are the first to show damage because they are narrow, around 1 to 2 millimeters wide. The same plaque that would barely affect a 4 millimeter coronary artery can choke off a 1 millimeter penile artery. ED is a small-vessel symptom of a big-vessel problem.

What is the link between ED and Alzheimer's disease?

The link between ED and Alzheimer's disease is small-vessel disease in the brain, which shares mechanisms with ED in the penis. Both involve damaged endothelium, low nitric oxide, and chronic inflammation. Treating vascular risk early may protect both function and cognition.

Does sleep apnea cause ED?

Yes, sleep apnea, a condition where breathing stops repeatedly during sleep, can cause or worsen ED. It lowers oxygen, raises blood pressure, and damages endothelial function. It also lowers testosterone. Treating sleep apnea often improves erections within weeks.

What role does alcohol play in ED?

Alcohol plays a complex role in ED. Light drinking has minimal effect, but regular heavy use lowers testosterone, raises estrogen via aromatase (an enzyme that converts testosterone to estrogen), worsens sleep, and damages the endothelium. Cutting back is one of the most underrated ED interventions.

How do we treat ED in men who cannot take PDE5 inhibitors?

We treat ED in men who cannot take PDE5 inhibitors with options like vacuum erection devices, intraurethral suppositories, intracavernosal injections (low-dose prostaglandin shots), shockwave therapy, and PT-141. The right choice depends on the cause of ED and your other medications.

What is intracavernosal injection therapy?

Intracavernosal injection therapy is a small injection of medication directly into the side of the penis using a fine needle. It works for most men, even when pills do not, and produces a reliable erection in 5 to 15 minutes. We teach the technique in clinic before home use.

How does insulin resistance worsen ED?

Insulin resistance worsens ED by damaging small blood vessels and nerves and lowering nitric oxide. It also drives fat storage, raises blood pressure, and lowers free testosterone through changes in SHBG (sex hormone binding globulin). Treating insulin resistance often improves erectile function.

Is psychological ED different from vascular ED?

Yes, psychological ED is different from vascular ED. Psychological ED is more common in younger men and shows up as inconsistent performance with normal morning erections. Vascular ED is more constant and tracks with risk factors like blood pressure, cholesterol, and smoking. Many men have both.

What testing should I get before starting ED treatment?

Testing before starting ED treatment should include total and free testosterone, fasting glucose and insulin, ApoB, Lp(a), high-sensitivity CRP, blood pressure, and a careful sleep history. We test both the hormonal and vascular sides so the plan addresses the actual cause.

Will ED come back if I stop treatment?

ED will likely come back if you stop the symptomatic treatment but do not address the root cause. PDE5 inhibitors mask the symptom while you work on vascular health. If we lower ApoB, fix sleep apnea, treat blood pressure, and rebuild fitness, many men eventually need less medication.

Why does Fishtown Medicine pair ED treatment with a cardiac workup?

Fishtown Medicine pairs ED treatment with a cardiac workup because ED is one of the earliest detectable signs of vascular disease. Treating only the symptom misses an opportunity to prevent a heart attack. We treat ED and the heart in one coordinated plan.

Maybe. Low testosterone kills *libido* (desire). Vascular disease kills *performance* (mechanics). Often it is both. We test both.

Does porn induced ED exist?

Yes, in some young men in their 20s, ED is mostly psychological and tied to dopamine desensitization from heavy high-speed internet porn. The plumbing is fine. The brain wiring needs a reset, often called a dopamine reset, plus support if anxiety is involved.

Is Cialis safe long term?

Yes. Studies of men on chronic PDE5 inhibitors suggest possible benefits beyond sexual function, including improved blood flow and lower rates of certain cardiac events. We still review your medications and blood pressure first.

TL;DR · 30-second take

Erectile dysfunction (ED) is often the earliest warning sign of vascular disease, since the small arteries in the penis clog before the larger arteries in the heart. Men with ED in their 40s have far higher risk of heart events in their 50s. We treat the symptom and the root cause together.

Erectile Dysfunction: The Canary in the Coal Mine

Why ED Is a Heart Problem, Not a Plumbing Problem

If you have erectile dysfunction (ED) in your 40s, your risk of heart disease in your 50s is significantly higher than someone without ED. Some studies report up to a 50-fold increase in certain age groups.¹ ED is not just a sexual issue. It is often the earliest warning sign that your blood vessels are aging faster than the rest of you. In Medicine 3.0, we treat the penis as a barometer. The arteries in the penis are tiny, about 1 to 2 millimeters wide. The arteries in the heart are larger, about 3 to 4 millimeters. Plaque clogs the small pipes first. If you have flow problems below, you almost certainly have quiet plaque above.

What is the science behind ED and heart disease?

The science behind ED and heart disease is endothelial dysfunction. Endothelial dysfunction means the inner lining of your blood vessels has lost its ability to release nitric oxide (NO), the gas that tells vessels to relax and open. An erection is a hydraulic event driven by nitric oxide.³

The Mechanism: The lining of your blood vessels (the endothelium) releases nitric oxide to widen the vessel and let blood in.
The Breakdown: If your endothelium is inflamed by sugar, smoking, high ApoB, or high blood pressure, it stops making enough nitric oxide.
The Result: Less widening. Softer erections.
The Prediction: The same problem is happening in your coronary arteries. It just has not caused a heart attack yet.²

What is the Fishtown approach to ED?

The Fishtown approach to ED is vascular rehab, not just a pill. We treat the root cause and the symptom together.

Advanced Lipid Panel: We immediately check ApoB and Lp(a) (a genetic cholesterol particle). ED is a vascular condition until proven otherwise.
Daily Cialis (Tadalafil): We use 5 mg daily, not only for sex but for endothelial rehab. It keeps vessels flexible and lowers some markers of vascular inflammation.
Focused Shockwave Therapy: This treatment uses sound waves to break up small plaque and stimulate angiogenesis, the growth of new blood vessels in the tissue.

What are the medical options for ED?

The medical options for ED include several classes of treatment that work in different ways.⁴

Treatment	Mechanism	Benefit	Drawback
Viagra (Sildenafil)	PDE5 inhibitor	Strong, fast onset	Headache, flushing, timing required
Cialis (Tadalafil)	PDE5 inhibitor	36-hour half-life, more spontaneous	Mild back pain for some
Shockwave (Gainswave)	Physical mechanics on tissue	Targets the root tissue, not just symptoms	Expensive, 6 to 12 sessions
PT-141 (Bremelanotide)	Central nervous system	Works on libido, not blood flow	Nausea is common

Guidance from the Clinic

"Listen to the canary."

Why We Start Early: At Fishtown Medicine, we have seen what happens when vascular disease goes unmanaged for decades. Our approach is shaped by years of treating the complications that develop when these early signals are ignored. That experience gives us our urgency. We catch it now so you never have to face those consequences.

A common request: "Dr. Ash, I just need a pill." Our response: "We will give you the pill. We are also checking your heart." We have caught significant coronary artery disease in 42-year-old men whose only symptom was softer erections. We fix the sex life because quality of life matters. We use the worry from the symptom to drive the lifestyle change that protects the heart.

Actionable Steps in Philly

Audit the flow.

Morning erection check: Most men should wake up with an erection on most mornings. This is a simple test of your REM sleep and vascular health. If morning erections have disappeared for months, that is organic pathology, not stress.
Stop antiseptic mouthwash: As we cover in our oral health guide, antiseptic mouthwash kills the bacteria that make nitric oxide in your mouth. Stop it.
Eat beets and arugula: Natural dietary nitrates support nitric oxide production.
Get an ApoB and Lp(a) test: ED is a reason to look at your arteries, not just your testosterone.

Heed the warning. Book Your Warm Invitation Call Here

Scientific References

Gandaglia G, et al. "A systematic review of the association between erectile dysfunction and cardiovascular disease." European Urology. 2014.
Vlachopoulos C, et al. "Prediction of cardiovascular events and all-cause mortality with erectile dysfunction." Journal of the American College of Cardiology. 2013.
Burnett AL. "The role of nitric oxide in erectile dysfunction." Current Pharmaceutical Design. 2005.
Salonia A, et al. "European Association of Urology Guidelines on Sexual and Reproductive Health." European Urology. 2021.

Fishtown Medicine | Cardiovascular risk

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

Frequently Asked Questions

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Still have a question?

He answers personally. Usually within a few hours.

TL;DR · 30-second take

Erectile Dysfunction: The Canary in the Coal Mine

Why ED Is a Heart Problem, Not a Plumbing Problem

What is the science behind ED and heart disease?

The Mechanism: The lining of your blood vessels (the endothelium) releases nitric oxide to widen the vessel and let blood in.
The Breakdown: If your endothelium is inflamed by sugar, smoking, high ApoB, or high blood pressure, it stops making enough nitric oxide.
The Result: Less widening. Softer erections.
The Prediction: The same problem is happening in your coronary arteries. It just has not caused a heart attack yet.²

What is the Fishtown approach to ED?

The Fishtown approach to ED is vascular rehab, not just a pill. We treat the root cause and the symptom together.

Advanced Lipid Panel: We immediately check ApoB and Lp(a) (a genetic cholesterol particle). ED is a vascular condition until proven otherwise.
Daily Cialis (Tadalafil): We use 5 mg daily, not only for sex but for endothelial rehab. It keeps vessels flexible and lowers some markers of vascular inflammation.
Focused Shockwave Therapy: This treatment uses sound waves to break up small plaque and stimulate angiogenesis, the growth of new blood vessels in the tissue.

What are the medical options for ED?

The medical options for ED include several classes of treatment that work in different ways.⁴

Treatment	Mechanism	Benefit	Drawback
Viagra (Sildenafil)	PDE5 inhibitor	Strong, fast onset	Headache, flushing, timing required
Cialis (Tadalafil)	PDE5 inhibitor	36-hour half-life, more spontaneous	Mild back pain for some
Shockwave (Gainswave)	Physical mechanics on tissue	Targets the root tissue, not just symptoms	Expensive, 6 to 12 sessions
PT-141 (Bremelanotide)	Central nervous system	Works on libido, not blood flow	Nausea is common

Guidance from the Clinic

"Listen to the canary."

Why We Start Early: At Fishtown Medicine, we have seen what happens when vascular disease goes unmanaged for decades. Our approach is shaped by years of treating the complications that develop when these early signals are ignored. That experience gives us our urgency. We catch it now so you never have to face those consequences.

Actionable Steps in Philly

Audit the flow.

Morning erection check: Most men should wake up with an erection on most mornings. This is a simple test of your REM sleep and vascular health. If morning erections have disappeared for months, that is organic pathology, not stress.
Stop antiseptic mouthwash: As we cover in our oral health guide, antiseptic mouthwash kills the bacteria that make nitric oxide in your mouth. Stop it.
Eat beets and arugula: Natural dietary nitrates support nitric oxide production.
Get an ApoB and Lp(a) test: ED is a reason to look at your arteries, not just your testosterone.

Heed the warning. Book Your Warm Invitation Call Here