What Causes Erectile Dysfunction in Men?

Generally, male erectile dysfunction (ED) may result from excessive psychological stress, chronic disruption of circadian rhythms, testosterone deficiency syndrome, peripheral neuropathy associated with type 2 diabetes, or occlusion of the penile cavernosal arteries. If persistent symptoms occur, it is advisable to seek timely evaluation and treatment at a reputable hospital’s urology or andrology department. A detailed analysis follows:

1. Excessive Psychological Stress

Chronic stress from work or daily life—accompanied by anxiety and tension—can inhibit central nervous system–mediated excitatory signaling, thereby impairing initiation of erection. Patients are encouraged to actively regulate emotions, engage regularly in outdoor physical activity, enhance communication and emotional support with their partners, and avoid excessive self-criticism.

2. Chronic Disruption of Circadian Rhythms

Prolonged sleep deprivation and excessive fatigue disrupt endocrine rhythms, reduce peak secretion of sex hormones, and diminish overall physical energy—leading to insufficient erectile rigidity. Establishing regular sleep habits—including 7–8 hours of quality sleep per night—and minimizing late-night activities are essential. A balanced approach combining work and rest helps prevent physical exhaustion.

3. Testosterone Deficiency Syndrome

Inadequate testosterone production by the testes directly reduces libido and impairs maintenance of erection, often accompanied by decreased energy levels and reduced body/facial hair. Under medical supervision, testosterone replacement therapy may include oral testosterone undecanoate soft capsules, intramuscular testosterone propionate injection, or testosterone enanthate injection. Regular follow-up testing of serum sex hormone levels is recommended.

4. Peripheral Neuropathy in Type 2 Diabetes

Chronic hyperglycemia damages peripheral nerves and vascular endothelium surrounding the penis, impairing both neural transmission of erection signals and penile blood perfusion—resulting in diminished erectile function. Medications such as mecobalamin tablets, epalrestat tablets, and calcium dobesilate capsules may be prescribed to improve nerve conduction and microvascular health. Strict glycemic control remains paramount.

5. Cavernosal Artery Occlusion

Atherosclerotic stenosis or occlusion of penile arterial supply limits cavernosal blood inflow, preventing full erection or resulting in markedly poor rigidity. When pharmacotherapy proves ineffective, surgical interventions—including penile arterial bypass surgery, cavernosal stent placement, or penile prosthesis implantation—may be considered. Postoperative rehabilitation must strictly follow physician instructions.

In daily life, maintaining emotional stability and avoiding prolonged anxiety is crucial. Adhering to regular sleep-wake cycles, minimizing nocturnal activity, following a balanced diet to maintain healthy body weight, routinely monitoring blood glucose and lipid profiles, and seeking prompt medical consultation for persistent erectile abnormalities—all help prevent disease progression. Self-treatment with unproven remedies or non-prescribed medications should be avoided.