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Knowledge Center

Straightforward education on erectile dysfunction, venous leak, and real-world solutions

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WHAT'S NEW

Priapism: When an Erection Does Not Subside

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A lamp-lit hallway at night with a coat on a hook by the front door and car keys on a side table.
Treatments

Priapism: When an Erection Does Not Subside

Priapism is an erection that lasts for hours without sexual stimulation or continues long after it. One type is a medical emergency that can permanently damage erectile tissue. This article explain...

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A couple in their thirties laughing together on a green sofa in a living room with house plants.
ED

Premature Ejaculation and Erectile Dysfunction: When One Drives the Other

Premature ejaculation and erectile dysfunction often occur together. A man who fears losing his erection may hurry to finish, and repeated early ejaculation can create the anxiety that undermines e...

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A cyclist in his forties adjusting his bike saddle at the side of a country road lined with autumn trees.
Lifestyle

Cycling and Erectile Function: Saddle Pressure, Numbness, and What Helps

Cycling has a reputation for causing erectile problems. The largest comparative study found cyclists had no worse erectile function than swimmers or runners, but genital numbness was common and is ...

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Dr. Rena Malik, MD: Urologist, Pelvic Surgeon, and Author of The Hard Truth
ED

Dr. Rena Malik, MD: Urologist, Pelvic Surgeon, and Author of The Hard Truth

Dr. Rena Malik is a board-certified urologist and pelvic surgeon whose clinical training is in female pelvic medicine and reconstructive surgery. Her book, The Hard Truth: Everything Men Need to Kn...

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Middle aged man sitting on doorstep in the evening light
Mental Health

Performance Anxiety: How One Failed Erection Becomes a Pattern

A single failed erection is common and usually has an ordinary cause. For some men it starts a cycle of anticipation, self-monitoring and further failure. This article explains the physiology behin...

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Supplement bottles and capsules on a wooden table beside a scattering of horse chestnuts and their husks.
Treatments

Supplements Marketed for Venous Leak: What the Evidence Supports

Horse chestnut, L-arginine, ginseng and pycnogenol are all sold to men with venous leak. This article assesses each on the same standard: what evidence exists, in which condition, and whether the m...

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A man in his thirties sitting on an apartment windowsill at night, looking out at the city with his phone face down beside him.
ED in Young Men

Pornography and Erectile Function: What the Evidence Shows

Pornography is often blamed for erectile problems in young men. Large surveys find little link between how often men watch it and erectile function, but men who feel their use is out of control rep...

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A couple in their fifties sharing a laugh at a restaurant table after dinner, with the plates cleared.
Treatments

Sildenafil and Tadalafil: Why the First Attempts Often Fail

Many men decide sildenafil or tadalafil does not work after one or two tries. In clinical studies, success kept rising for several more attempts, and a large share of so-called failures came down t...

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A man in his forties sitting at a neighbourhood bar in the evening with a glass of beer and a glass of water in front of him.
Lifestyle

Alcohol and Erectile Function: Acute Effects and Long-Term Damage

A drink or two before sex has little measurable effect on erections. Years of heavy drinking are a different matter, because alcohol at that level damages the nerves, hormones and blood vessels an ...

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A man in his forties standing at a kitchen counter with a glass of water in morning light.
Mental Health

Antidepressants and Sexual Side Effects

Sexual side effects are a common reason men stop antidepressants and an uncommon topic before they start them. What the rates are, why depression itself confuses the picture, and the options a pres...

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Bathroom scales on a tiled floor beside running shoes and a folded towel.
ED

GLP-1 Medications and Erectile Function

Weight loss improves erectile function, so GLP-1 medications should help. Two recent datasets found the opposite association. What has actually been found, why it may not mean what it appears to, a...

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An ultrasound machine and transducer on a counter in an examination room.
Venous Leak

Penile Duplex Doppler: What the Test Involves and What the Numbers Mean

Venous leak is usually assumed rather than confirmed, because confirming it takes a specific scan that is not part of a routine workup. What the test involves, what the measurements mean, and when ...

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A man in his sixties writing a list in a notebook at a kitchen table.
Prostate

Before Prostate Treatment: The Sexual-Function Questions to Ask

Sexual function is usually discussed once, briefly, in a consultation dominated by cancer. These are the questions worth asking before a treatment is chosen, and who should be in the room for them.

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A weekly pill organiser open on a kitchen counter beside a glass of water.
Prostate

Penile Rehabilitation After Prostate Treatment: What the Evidence Supports

Rehabilitation protocols after prostate treatment rest on sound reasoning about tissue oxygenation, but the human trials are more equivocal than the confidence behind the prescriptions. What the st...

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A man in his late sixties and his wife sitting together on a sofa in afternoon light.
Prostate

Androgen Deprivation Therapy: Desire, Erections, and What Returns

Hormone therapy suppresses desire before it affects erections, which makes it a different problem from post-surgical erectile dysfunction. What changes, in what order, and what the data show about ...

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A man in his sixties sitting at a kitchen table in morning light, a wall calendar on the wall behind him.
Prostate

Radiation Therapy and Erectile Function: Why the Decline Comes Later

After surgery, erectile dysfunction begins immediately. After radiation it develops gradually over two to three years, through a different mechanism. What the long-term trial data show, why the dec...

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An empty ashtray beside a broken cigarette and a switched-off vaping device.
Lifestyle

Smoking, Vaping, and Erectile Function: What the Dose-Response Evidence Shows

Each additional 10 cigarettes per day raises the odds of erectile dysfunction by 14%, and each additional 10 years of smoking by 15%. The mechanism, what recovers after stopping, and what is curren...

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A woven cord with a single thickened knot interrupting the even weave.
ED

Peyronie's Disease: Curvature, Erectile Dysfunction, and What the Evidence Supports

Peyronie's disease was found in 8.9% of men attending prostate cancer screening, most of whom had not sought help for it. What causes the curvature, why it so often brings erectile dysfunction with...

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A CPAP mask on a bedside table beside an unmade bed in early morning light.
Lifestyle

Sleep Apnea, Nocturnal Erections, and What They Reveal About Erectile Dysfunction

Erectile dysfunction is present in 59% to 69% of men with obstructive sleep apnea. What the association means, what CPAP achieves, and why the erections you have during sleep are the clearest signa...

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A man in his thirties sitting thoughtfully in a waiting room.
ED

Erectile Dysfunction in Men Under 40: Causes, Warning Signs, and What to Ask For

One in four men seeking help for newly diagnosed erectile dysfunction is 40 or younger, and almost half of them have severe ED. Why the anxiety assumption is often wrong, and what a young man shoul...

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A blood sample vial beside a laboratory report, representing morning testosterone testing.
ED

Testosterone and Erectile Dysfunction: What Low Testosterone Explains and What It Does Not

Men told their testosterone is low often expect that correcting it will restore their erections. For most, it does not. What the AUA Guideline recommends measuring, what the treatment trials found,...

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Xialla

Choosing the Right Xialla Size — and What to Do If You Got It Wrong

Xialla is sized by circumference, not length, which is the source of most sizing mistakes. How to measure, how to judge the fit once it arrives, and how the free size exchange works.

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A man in his fifties sitting upright on the edge of a bed, hands resting on his knees, eyes closed in concentration.
Treatments

Pelvic Floor Training for Venous Leak: What the Trials Show and How to Do It

Pelvic floor training costs nothing, has no side effects, and acts on the outflow side of the equation. What two randomized trials found, why the muscles matter mechanically, and how the exercise i...

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A man in his sixties at a kitchen table using a handheld blood glucose meter, with a notebook and test strips beside him.
ED

Diabetes and Erectile Dysfunction: Why Blood Retention Is Usually the Problem

Diabetes is the strongest medical association with erectile dysfunction, and in diabetes the problem is usually retention rather than blood flow. Why erectile tissue that cannot relax fully produce...

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A man in his fifties studies a pill bottle while a doctor in a white coat gestures in explanation across a consulting room table.
ED

Medications That Affect Erections: What the Evidence Shows and What to Ask Your Doctor

Several classes of prescription medication are associated with reduced erectile function, but the trial evidence is more nuanced than most drug labels suggest. What controlled studies show about bl...

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A group of clinicians in white coats and shirtsleeves in discussion. Overlaid text reads: ED AUA Guideline, 5 of 5 in the series.
Treatments

ED Treatment Options in the 2018 AUA Guideline

Oral medication accounts for only a minority of the 2018 AUA Guideline's treatment statements. This article sets out the full range it presents — lifestyle, mental health referral, PDE5 inhibitors,...

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A group of clinicians in white coats and shirtsleeves in discussion. Overlaid text reads: ED AUA Guideline, 4 of 5 in the series.
Venous Leak

Vasculogenic ED in the AUA Guideline: Arterial vs. Venous Causes

Vasculogenic ED comprises two distinct mechanisms: reduced blood flow into the penis, and inadequate retention of blood once it arrives. The 2018 AUA Guideline treats them differently, permitting a...

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Xialla

Using a Constriction Device Safely: Wear Time, Warning Signs, and When to Seek Care

A constriction device works by restricting blood flow, which is also why incorrect use can cause injury. This article covers the 30-minute wear limit, the warning signs that mean remove it immediat...

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A group of clinicians in white coats and shirtsleeves in discussion. Overlaid text reads: ED AUA Guideline, 3 of 5 in the series.
Treatments

Shared Decision-Making in Erectile Dysfunction Care

The 2018 AUA Erectile Dysfunction Guideline identifies shared decision-making as central to ED care and does not follow a stepwise treatment model. This article covers what that means for the clini...

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A group of clinicians in white coats and shirtsleeves in discussion. Overlaid text reads: ED AUA Guideline, 2 of 5 in the series.
Treatments

What the AUA Guideline Says About Venous Leak and Why Surgery Is Generally Not Recommended

The 2018 AUA Erectile Dysfunction Guideline does not recommend traditional penile venous surgery for most men. This article explains Statement 22, the distinction between arterial and venous causes...

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A group of clinicians in white coats and shirtsleeves in discussion. Overlaid text reads: ED AUA Guideline, 1 of 5 in the series.
Treatments

The AUA Guideline on Erectile Dysfunction

The AUA Erectile Dysfunction Guideline is the leading evidence-based document that shapes how urologists evaluate and treat ED in the United States. This article explains what the 2018 guideline is...

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A couple embracing in shallow surf on a tropical beach, with palm trees and moored sailboats behind them.
Xialla

Xialla Customer Reviews on Trustpilot

Xialla has over 600 Trustpilot reviews with a rating of 4.4 to 4.6. This article covers what customers most commonly report, what they report when the device does not work, and what review data can...

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A middle-aged couple standing together on a balcony at sunset, facing each other, with the ocean behind them.
Xialla

Xialla Customer Care and Support

At Xialla, everything begins with a simple, unwavering promise: You are the most important person to us. We will always take care of you. We will always be there to help you. This is not marketing ...

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Four doctors in white coats with stethoscopes and clipboards conferring in a hospital corridor.
Clinical Evidence

Xialla Featured in the International Journal of Impotence Research

In August 2023, the International Journal of Impotence Research (IJIR), one of the leading peer-reviewed journals in sexual medicine, published a perspective article highlighting Xialla as a novel ...

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Venous Leak

Venous Leak: Causes, Symptoms, Diagnosis, and Treatment

Venous leak, also known as veno-occlusive dysfunction or venogenic erectile dysfunction, is a common yet often under-recognized vascular cause of erectile difficulties. For many men, it means blood...

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A couple standing close together, silhouetted against the sea at sunset on a coastal dune.
Xialla

The Development History of Xialla

Twenty years ago, the idea for Xialla emerged from a desire to create a better solution for venous leak and related intimacy challenges. What began as a simple homemade prototype has grown into a p...

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An older couple embracing on a terrace at sunset, foreheads touching, with a coastline and sea behind them.
Venous Leak

Why Venous Leak Is Difficult to Treat

Venous leak — also called veno-occlusive dysfunction — is a common but particularly stubborn cause of erectile dysfunction. While many men respond well to pills or other treatments that increase bl...

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A couple embracing on a beach at sunset, foreheads touching, with waves breaking behind them.
Xialla

Testicular Ascent and Scrotal Support During Intercourse

The testicles rise during arousal through the cremasteric reflex, which is normal but uncomfortable for some men. This article explains the reflex, how Xialla's anchoring loop limits the movement, ...

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A grey-bearded man and a woman walking a sandy path through coastal greenery at sunset, smiling at each other.
Xialla

Soft Glans Syndrome: Why the Head of the Penis May Not Firm Up

Some men achieve adequate rigidity in the shaft of the penis while the head remains soft or less full. This is soft glans syndrome, and it has three distinct underlying mechanisms that respond to d...

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A couple embracing on a clifftop above a beach at sunset, backlit by low sun over the sea.
Xialla

Appearance and Positioning: Why Xialla Exposes More of the Shaft

Men using Xialla often notice more of the penile shaft is visible. This is caused by the anchoring loop holding the scrotum rearward, and is a change in positioning rather than in the penis itself....

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Nigel Shaw, founder of Xialla, smiling in a living room, wearing glasses and a linen shirt.
Prostate

Enlarged Prostate, Uremia, and Kidney Failure: A Patient Case

This is my personal story of benign prostatic hyperplasia (BPH), obstructive kidney damage, the “uremic fog” that can accompany it, and the remarkable recovery that followed proper treatment. I’m s...

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A clinician presenting to a large conference audience beside a slide titled "Managing Veno-Occlusive Dysfunction in Erectile Dysfunction", showing labelled diagrams of the penile veins.
Venous Leak

How Xialla Addresses Veno-Occlusive Dysfunction

Venous leak, also known as veno-occlusive dysfunction (VOD) or corporoveno-occlusive dysfunction (CVOD), represents one of the most significant yet often under-addressed contributors to erectile dy...

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An older couple walking hand in hand beside a river through autumn woodland.
Mental Health

Realistic Expectations About Sex and Your Body

Unrealistic expectations about erection, desire, and intercourse add pressure on top of any physical difficulty. This article summarizes common myths, the sexual response cycle, and how vascular, n...

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A middle-aged couple standing arm in arm on a ship's deck at sunset, looking at each other.
Lifestyle

Adapting to Changing Sexuality with Aging

As we age, our bodies and sexual responses naturally evolve. Contrary to popular mythology, aging does not inevitably mean the end of satisfying intimacy. With understanding, adaptation, and the ri...

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An older couple seen from behind, embracing on a hilltop overlooking a valley at sunset.
Xialla

Skin Slack and Direct Contact During Intercourse

Penile skin is loose enough to accommodate erection, which means it can move independently of the shaft during intercourse. Rearward anchoring reduces that slack. This article explains the mechanic...

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A couple reclining together on a sofa in a bright room, the woman resting against the man's shoulder.
Xialla

The Purpose of Xialla’s Anchoring Strap and Adhesive Pad

Many customers ask about the strap and adhesive component that comes with their Xialla device. It’s a thoughtful question — and understanding the “why” behind this part of the design helps you get ...

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A couple sitting close together in a wooden rowing boat on a calm river, surrounded by summer greenery.
Xialla

How to Reduce Irritation From Xialla Adhesive Patches

Many men tell us the Xialla rings work beautifully for them, but a small number experience mild skin irritation or itching for a few days after removing the adhesive patch. One customer, Robert (no...

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A middle-aged couple embracing beside a canal in Venice, gondolas moored behind them.
Mental Health

Discussing Xialla With a Reluctant Partner

Even when the Xialla works well medically, a rare but painful obstacle can arise: partner reluctance. A wife or partner may see the ring and associate it with “sex toys,” performance props, or some...

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A couple sitting at a table on a shaded terrace overlooking a coastal town and the sea.
Xialla

Foreskin Retraction and Glans Exposure

The glans carries a high density of sensory nerve endings, and how much of it is exposed affects stimulation. In uncircumcised men, rearward traction from Xialla's anchoring holds the foreskin retr...

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A couple walking hand in hand along a beach at sunset, silhouetted against the surf.
Xialla

Girth and Firmness: Why Blood Retention Affects How Full an Erection Is

Girth during an erection depends on how completely the erectile tissue expands, which depends on blood retention as well as inflow. This article explains why reduced venous outflow affects fullness...

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