What to watch with IgG and skin aging?

The question about IgG and skin aging is not supported by the provided context. IgG (Immunoglobulin G) is an antibody involved in immune function, not a direct genetic marker for skin aging. Consumer DNA tests that claim a link between IgG gene variants and skin aging lack robust evidence. Skin aging is primarily driven by UV exposure, lifestyle factors (smoking, diet), and collagen degradation. A DNA test for IgG does not provide clinically actionable information for skin health. Without blood-based IgG levels or validated studies, such claims are speculative. Be cautious of marketing hype: these results are not actionable. Recommended focus: proven anti-aging strategies (sunscreen, antioxidants, retinoids) rather than genetic IgG reports.