The provided context documents contain no information about MC4R and sport. MC4R (melanocortin-4 receptor) is a gene primarily involved in appetite regulation and energy homeostasis. Some studies have linked MC4R variants to obesity risk, which could indirectly affect athletic performance, but there is no strong evidence that MC4R directly enhances sports ability or recovery. The evidence is weak and mostly based on association studies. Therefore, using MC4R genetic test results to guide training or nutrition is not supported by current science. Consumers should be cautious about overinterpreting such results, as the practical relevance for sport is unclear.
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