30 to 50 million US men have ED — but only 25 percent get treatment. This 2026 guide covers the full erectile mechanism, all causes (vascular, neurological, hormonal, medication-induced, psychological), why ED predicts heart disease by 3 to 5 years, the PDE-5 inhibitor comparison table, and the complete stepwise treatment pathway from lifestyle to penile implants.

Erectile dysfunction affects 30 million men in the USA — yet most never discuss it with a doctor. This complete guide covers every physical and psychological cause, how ED can be an early warning sign of heart disease, and all treatment options from lifestyle changes to generic PDE-5 inhibitors at up to 85% off branded prices.