Myths vs facts: CYP2C19 and Haut

CYP2C19 is a liver enzyme that metabolizes several drugs, including clopidogrel and proton pump inhibitors. Marketing often claims that CYP2C19 variants directly affect skin health, sensitivity, or aging. However, the scientific evidence for such claims is weak to unclear. While CYP2C19 expression has been detected in skin cells, its functional role there remains poorly understood. The primary clinical relevance of CYP2C19 is drug metabolism, not skin physiology. Myths tend to overstate the impact of a single gene on skin, whereas facts show that skin conditions are polygenic and heavily influenced by environmental factors like UV exposure, diet, and lifestyle. A consumer DNA test cannot reliably predict your skin health. Never change your medication based solely on a genetic test – always consult a physician. Evidence: unclear/mixed.