
Viagra® and Cialis® help blood flow temporarily, but why the blood flow is impaired is the real story. In most men, ED reflects endothelial dysfunction—the same vascular impairment linked to heart disease.
The endothelium lines every blood vessel, producing nitric oxide (NO)—the chemical signal that tells arteries to relax. Inflammation, high sugar, smoking, and low testosterone reduce NO production, restricting flow to the smallest vessels—especially penile tissue.
Our St. Louis practice blends vascular medicine with functional optimization:
Persistent ED warrants testing for cardiovascular risk. The penis is an early indicator—the “check-engine light” of vascular health.
ED is rarely just psychological—it’s physiological. Restoring endothelial health improves vitality, confidence, and long-term heart health.
👉 Learn about our Men’s Health & Hormone Optimization and Red-Light Therapy for Circulation.