Can Leaky Gut Test help with skin aging?

The idea that a 'Leaky Gut' test can help with skin aging is based on the hypothesis that increased intestinal permeability promotes systemic inflammation, which may accelerate skin aging. However, there are no validated clinical studies showing that such a test directly improves skin aging outcomes. Most commercial tests measure markers like zonulin or lipopolysaccharides, but their relevance to individual skin health is unclear. The evidence is mostly mechanistic or marketing-driven. At best, the test might serve as a general awareness tool, but it does not replace medical evaluation. Proven strategies for skin aging include a balanced diet, sun protection, antioxidants, and, if gut issues are suspected, a doctor-supervised diagnostic workup. Without robust human trials, the benefit remains speculative.