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Causes of erectile dysfunction

ED can have more than one cause. Common contributors include cardiovascular and blood-vessel disease, diabetes, hormonal problems, nerve disorders or injury, certain medicines, anxiety, depression, stress, low confidence, smoking, heavy alcohol use, and inactivity.

Why mixed causes matter

A physical contributor can create worry; worry can then make erections less reliable. Conversely, anxiety can coexist with an unrecognized medical issue. That is why self-diagnosis based on a single clue is unreliable.

Next: physical vs psychological ED or when to seek medical evaluation.