What are the physical causes of ED?

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High blood pressure (also called hypertension)

High blood pressure can lead to damage to the blood vessels, which results in decreased blood flow. Not enough blood flows into the penis to get a firm erection.

Diabetes (high blood sugar)

Diabetes can increase the risk for having ED. Over time, high blood sugar can damage blood vessels and nerves in the penis.

High blood cholesterol

Over time, high blood cholesterol can cause blood vessels in the penis to narrow. Not enough blood flows into the penis to give a firm erection.

Nerve diseases

Men with diseases that affect the nerves, such as Parkinson’s disease and multiple sclerosis, are at a higher risk for having ED. The penis does not receive nerve messages from the brain or spinal cord. Without the nerve messages, blood does not flow into the penis.

Injuries or surgery to the pelvic area

Injuries or surgery to the pelvic area (especially prostate and rectal surgery) can damage nerves or blood vessels in the penis.

Low hormone levels

Low male hormone levels (such as testosterone) can decrease a man’s desire for sex and affect his ability to get an erection. Men with thyroid hormone levels that are too low or too high can also have ED.

ED as a possible side effect of medicine

Taking certain medicines may cause ED as a side effect. Medicines that can cause ED include:  Some medicines that treat high blood pressure, depression, or psychiatric conditions  and Antihistamines

Be sure to tell your doctor about all the medicines you take, including herbal supplements. And always talk with your doctor before you stop taking any medicines that your doctor has prescribed.

Lifestyle factors

Certain lifestyle factors may increase the risk for getting ED, such as:

• Smoking

• Being overweight

• Drinking too much alcohol

• Not being physically active

• Using recreational drugs, such as marijuana, cocaine, or heroin

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