Can low testosterone cause erectile dysfunction?

Yes, low testosterone (low T) can contribute to ED, although it’s not the most common cause. Testosterone plays a key role in sexual desire (libido), and when levels drop, it can affect your mood, energy, and ability to get or maintain an erection. Symptoms of low T also include fatigue, reduced muscle mass, and trouble concentrating. If you suspect low T, your doctor can order a simple blood test. Treatment may include testosterone replacement therapy (TRT), but it’s not suitable for everyone. Managing stress, sleeping well, and exercising can also support healthy hormone levels naturally.