How are Selen and skin aging related?

Selenium is an essential trace element that acts as a cofactor for selenoproteins such as glutathione peroxidases, which help neutralize oxidative stress in the skin. Some observational studies suggest that low selenium levels may be associated with accelerated skin aging (wrinkling, loss of elasticity). However, the evidence is mostly mechanistic; robust clinical trials demonstrating that selenium supplementation slows skin aging are lacking. Moreover, excessive selenium intake can be toxic (selenosis). At-home selenium tests provide only a snapshot and cannot reliably predict skin aging outcomes. Consumers should be cautious of marketing claims linking selenium directly to anti-aging benefits. A balanced diet rich in selenium (Brazil nuts, fish) is generally sufficient; supplementation should only be considered under medical guidance.