Evidence check: NutriCare | INFINITY DNA-Test in the context of fertility

The requested tests 'NutriCare' and 'INFINITY DNA-Test' are not mentioned in the provided context. In general, DNA tests for fertility often analyze variants in genes like MTHFR, FTO, or ESR1, but their effects on fertility are small and multifactorial. Evidence is mostly from GWAS or observational studies, not RCTs. Such tests may offer hints but cannot replace clinical diagnosis or prognosis. Factors like age, hormone status, lifestyle, and medical history are far more important. Without specific studies on these products, the evidence level remains unclear. Beware of exaggerated marketing claims.