What to watch with LCT and skin aging?

The question about LCT (lactase gene) and skin aging lacks direct scientific evidence. LCT variants determine lactose digestion capacity and are not causally linked to skin aging. Indirect connections are conceivable: lactose intolerance may reduce dairy intake, potentially affecting vitamin D and calcium status, which could theoretically influence skin health. Additionally, altered gut microbiota due to lactose malabsorption might promote low-grade inflammation, a known factor in skin aging. However, no specific studies confirm these pathways. The evidence is purely mechanistic and speculative. For those concerned about skin aging, established factors such as UV protection, antioxidants (e.g., vitamins C, E), and a balanced diet are far more relevant. Genetic testing for LCT alone provides no actionable insights for skin aging.