Angiotensin converting enzyme: An enzyme that helps the body regulate blood pressure. Abbreviated ACE. SLIDESHOW How to Lower Blood Pressure: Exercise Tips See Slideshow From Heart Health Resources Educating Around a Challenging DiagnosisTaking Her Health to Heart Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19