Can IgG help with skin aging?

The question of whether IgG (immunoglobulin G) can help with skin aging lacks scientific support. IgG is an antibody primarily involved in immune responses and chronic inflammation. Some companies market IgG tests to identify food sensitivities and claim that an elimination diet can slow skin aging. However, these claims are not backed by robust clinical evidence. Skin aging is mainly driven by UV exposure, oxidative stress, glycation, and collagen degradation—factors unrelated to IgG. No studies demonstrate a direct benefit of IgG measurements or supplements for skin aging. Those seeking to improve skin health should focus on proven strategies like sun protection, antioxidant-rich diet, and adequate hydration. IgG tests are often expensive and lack standardization. Therefore, the answer is: No, IgG does not have a demonstrated role in counteracting skin aging.