How are Zink and skin aging related?

Zinc is an essential trace element involved in collagen synthesis, antioxidant defense, and wound healing. Some studies suggest that zinc deficiency may accelerate skin aging by impairing collagen production and promoting oxidative stress. Topical zinc (e.g., in sunscreens) can protect against UV-induced skin aging. However, the evidence is mostly mechanistic and from observational studies; large clinical trials are lacking. The provided context does not contain specific information on zinc and skin aging. Therefore, the strength of evidence is limited. A balanced diet with zinc-rich foods (e.g., oysters, meat, nuts) is advisable, but supplements should only be taken if deficiency is confirmed. DNA tests for zinc-related genes (e.g., SLC30A8) have small effect sizes and are not clinically relevant for skin aging.