What role does Glukose play in skin aging?

Glucose plays a significant role in skin aging primarily through non-enzymatic glycation. Glucose molecules bind to collagen and elastin fibers, forming advanced glycation end products (AGEs). These AGEs cross-link the fibers, making them stiff and less elastic, which contributes to wrinkles, loss of firmness, and a dull complexion. Elevated blood glucose also increases oxidative stress, damaging skin cells and promoting inflammation. UV exposure accelerates this process. However, the evidence is largely mechanistic—based on cell and animal studies—with limited direct human trials establishing clear dose-response relationships. Genetic variants, such as those in SOD2 (rs4880), may modulate individual susceptibility by affecting mitochondrial antioxidant defense. Dietary strategies like low-glycemic diets or supplements (e.g., carnosine) are proposed to reduce glycation, but clinical proof remains moderate. In summary, glucose is a relevant contributor to skin aging, but the evidence is mixed and context-dependent; lifestyle and genetics interact.