Diabetes can affect both the nerves and blood vessels needed for normal erections. NIDDK reports that men with diabetes may develop ED earlier and are substantially more likely to experience it than men without diabetes.
High blood glucose over time can damage nerves and blood vessels. Both systems are essential for erection: nerves help transmit arousal signals, while blood vessels must open and maintain enough flow to the penis.
NIDDK notes that ED risk in diabetes is higher when blood glucose is not well controlled and when high blood pressure, high cholesterol, excess weight, inactivity, smoking or excess alcohol are also present.
Good diabetes management can help prevent additional nerve and vascular damage. Blood-pressure and cholesterol management, physical activity, weight management and smoking cessation also support the same systems involved in erectile function.
A clinician may address glucose control and other risk factors while also considering established ED treatments. Prescription PDE5 inhibitors can help some men, but response varies, and medication choice should account for cardiovascular history and other prescriptions.
Yes. NIDDK reports that more than half of men with diabetes will develop ED and that diabetes substantially increases the risk compared with men without diabetes.
Better glucose, blood-pressure and cholesterol control can help limit nerve and vascular damage and is an important part of overall management, although some men still need specific ED treatment.
Clinical context is drawn from primary U.S. health agencies and established medical organizations. Links are provided so readers can check the source directly.