Does low testosterone cause erectile dysfunction (ED)?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Low testosterone can contribute to erectile dysfunction (ED), particularly in men with significantly low levels. However, ED is rarely caused by low testosterone alone. It typically results from a combination of physical, hormonal, vascular, neurological, and psychological factors working together.

Because ED has many possible causes—ranging from cardiovascular issues and diabetes to stress, medications, or hormonal imbalances—identifying the right one is essential for effective treatment. Guessing can delay care or lead to the wrong solution. Taking a free, instant, online symptom check can help you quickly narrow down possible causes based on your unique symptoms and confidently plan your next steps with a healthcare provider.

Reviewed for medical accuracy: 07/15/2026

Important Next Steps

Learn if ED could signal low testosterone Discover likely causes of erectile dysfunction now See whether your symptoms need care today Find OTC options for erectile dysfunction relief Find a doctor for low testosterone care Discover medically valid home remedies for ED Understand if low testosterone is causing ED

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Explanation

Testosterone is a hormone that is important for a man's sexual health. When testosterone levels are too low—a condition called hypogonadism—it can lead to problems such as a low sex drive and sometimes trouble with erections.

Research shows that for some men who have low testosterone, taking testosterone replacement therapy can help improve their ability to get and keep an erection. However, erectile dysfunction (ED) is usually not caused by low testosterone alone.

Other issues, like problems with blood flow, nerve damage, stress, or other health conditions such as diabetes or heart disease, can also play a big role in ED. In simple terms, low testosterone might be one piece of the puzzle when it comes to ED.

If you're concerned about ED or low testosterone, it's important to speak with a doctor. They can check your hormone levels and look at other possible reasons for your symptoms. To help identify what might be causing your symptoms, you can start by taking a free symptom checker assessment. With the right information, your doctor can help decide the best treatment plan for you.

(References)

Rizk PJ, Kohn TP, Pastuszak AW, Khera M. Testosterone therapy improves erectile function and libido in hypogonadal men. Curr Opin Urol. 2017 Nov;27(6):511-515. doi: 10.1097/MOU.0000000000000442. PMID: 28816715; PMCID: PMC5649360.
Onyeji IC, Clavijo RI. Testosterone replacement therapy and erectile dysfunction. Int J Impot Res. 2022 Nov;34(7):698-703. doi: 10.1038/s41443-021-00512-w. Epub 2022 Jan 8. PMID: 34997198.
Wang Y, Jiang R. Androgens and erectile dysfunction: from androgen deficiency to treatment. Sex Med Rev. 2024 Jun 26;12(3):458-468. doi: 10.1093/sxmrev/qeae030. PMID: 38719619.

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