Is CRP Entzündung useful for skin aging?

CRP (C-reactive protein) is a non-specific marker of systemic inflammation. Chronically elevated CRP is associated with inflammaging, a low-grade inflammation that contributes to skin aging. However, CRP is not a direct or specific biomarker for skin aging. The evidence for using CRP testing to assess or predict skin aging is weak, based mostly on observational studies without proven causality. Direct-to-consumer tests marketing CRP as a 'skin aging indicator' overstate its utility. A normal CRP does not rule out skin aging, and an elevated CRP can result from many other causes (infection, stress, smoking). For skin health, established factors like UV protection, hydration, and antioxidants are far more impactful. Therefore, CRP measurement alone is not useful for skin aging assessment.