How are Fertility Check and Stress related?

The relationship between Fertility Check and Stress cannot be directly answered from the provided context. The available information covers DNA tests for athletic genetics (ACTN3), weight management (Slim DNA test), and an IgG blood test for food intolerances. None of these specifically address fertility or stress. In general, chronic stress can affect fertility via the HPA axis, increasing cortisol and disrupting reproductive hormones. Some consumer tests measure cortisol or other stress markers, but a validated 'Fertility Check' that causally links stress to fertility outcomes is not supported by strong evidence in this context. The evidence level is unclear or based on mechanistic reasoning. Consumers should be aware that such tests are often marketing-driven and not diagnostic. For genuine fertility concerns, clinical evaluation by a specialist is recommended.