What to watch with Fertility Check and Sport?

When combining a Fertility Check with sports testing, focus on overlapping markers: testosterone, cortisol, LH, FSH, prolactin, and inflammatory markers like IL-6. In athletes, low testosterone and high cortisol may signal overtraining, which can also impair fertility. Genetic variants (e.g., FADS2 rs174575 for omega-3 conversion, PPARA rs4253778 for fat oxidation) have small effect sizes and are not reliable predictors for either domain. Microbiome tests for children lack clinical validation. The evidence for a direct fertility–sport interaction is mostly mechanistic or observational (e.g., cortisol and sperm quality). Practical advice: do not overinterpret single genetic results; lifestyle factors (sleep, nutrition, training load) dominate. Safety note: avoid unregulated supplements that claim to boost testosterone or fertility without medical supervision. Consult a specialist for personalized interpretation.