Renin is a hormone produced by the kidneys that helps control blood pressure. Renin works with other chemicals to narrow (constrict) blood vessels, which increases blood pressure; a decrease in renin levels helps lower blood pressure.
Normally, this mechanism keeps blood pressure within a healthy range. However, some people develop chronic high blood pressure (hypertension). When this occurs, medications may be used that block the action of renin on blood vessels.
| Author: | Caroline Rea, RN, BS, MS |
| Medical Review: | Caroline S. Rhoads, MD - Internal Medicine Alan C. Dalkin, MD - Endocrinology |
| Last Updated: July 28, 2008 | |
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