Jan 22, 2026Arterial Stiffness Interventions: Cocoa Flavanols, Nitrates, Aged Garlic, and RCT OutcomesArterial stiffness (measured as pulse wave velocity) is an independent cardiovascular risk factor that increases with age. Cocoa flavanols, dietary nitrates, and aged garlic extract each show significant reductions in RCTs. Lifestyle factors (exercise, sodium restriction) remain foundational.