Evidence check: LCT in the context of Sport

The provided context does not include specific information about the LCT gene in a sports setting. In general, LCT variants (e.g., rs4988235) determine lactase persistence. For athletes, lactose intolerance may affect dairy consumption for recovery or nutrition, but the evidence for a direct performance impact is weak and depends on individual tolerance. A DNA test alone cannot guide diet; an elimination trial or breath test is more reliable. Evidence: gwas (well-established, but not from context). Caveat: Do not overinterpret; individual responses vary.