How are CYP1A2 and skin aging related?

The relationship between CYP1A2 and skin aging is not well established in current evidence. CYP1A2 is a liver enzyme primarily involved in metabolizing caffeine, estrogens, and various drugs. It is only minimally expressed in skin tissue, making a direct role in skin aging processes like collagen degradation or oxidative damage unlikely. Some mechanistic studies suggest that CYP1A2 activity may influence systemic oxidative stress or hormone levels (e.g., estrogen metabolites), which could indirectly affect skin health. However, the evidence is weak and largely derived from in vitro or animal models. Genetic variants in CYP1A2 (e.g., rs762551) are sometimes marketed in the context of caffeine metabolism and 'anti-aging,' but no robust clinical data support a direct link to skin aging. For improving skin health, proven strategies such as sun protection, balanced nutrition, and adequate sleep remain far more impactful. Relying on CYP1A2 genotyping for skin aging is not evidence-based at this time.