Evidence-minded men's performance guide

Erectile Dysfunction Guide

Understand erection quality, blood flow, lifestyle factors, medications and when to seek medical care.

Medical notice: This page is educational only and is not medical advice. Speak with a qualified healthcare professional about erectile dysfunction, hormone symptoms, medications, supplement interactions, pain, numbness, or sudden sexual-function changes.

What erectile function depends on

Erection quality depends on blood flow, nerve signaling, hormone status, sleep, stress, cardiovascular health, medication effects, relationship context and mental arousal.

Common causes

Common contributors include poor sleep, smoking, alcohol, stress, anxiety, high blood pressure, diabetes risk, cardiovascular disease, medication side effects and low activity.

First steps