What role does FADS1 play in Sport?

FADS1 encodes delta-5 desaturase, a key enzyme in polyunsaturated fatty acid metabolism, converting alpha-linolenic acid (ALA) into EPA and DHA. In sports, this is relevant because omega-3 fatty acids modulate inflammation, muscle recovery, and potentially endurance. However, the provided context contains no direct studies linking FADS1 variants to athletic performance. The evidence is primarily mechanistic: certain FADS1 polymorphisms can reduce endogenous EPA/DHA synthesis, which might theoretically impair recovery or increase inflammation after exercise. Yet robust human trials showing a clear performance impact are lacking. Athletes with less efficient variants might benefit from direct intake of long-chain omega-3s (e.g., fish oil), but this remains speculative. A FADS1 genetic test alone is insufficient to guide training or nutrition. The evidence base is weak and warrants caution. Practical recommendations should emphasize overall omega-3-rich nutrition rather than genotype-specific interventions until stronger data emerge.