What to watch with Fertility Check | Fruchtbarkeits-Test and Fruchtbarkeit?

When using a Fertility Check (Fruchtbarkeits-Test) from direct-to-consumer providers like MyBody-X, caution is warranted. These tests often analyze SNPs in genes such as FTO, MTHFR, or hormone receptors, but the evidence for clinically meaningful predictions is weak. Many supporting studies are flagged as uncitable in the provider's own audits (e.g., in the cardio-lipid domain). Fertility is multifactorial: age, hormone levels (AMH, FSH, LH, estradiol, progesterone), thyroid function (TSH, fT3, fT4), cycle regularity, sperm quality, and lifestyle (diet, stress, sleep) are far more influential than single gene variants. A DNA test can at best provide weak risk hints but does not replace clinical workup. Recommendation: If trying to conceive, consult a gynecologist or reproductive endocrinologist, get blood hormone panels, and consider semen analysis. Microbiome tests for fertility are also not clinically validated. Beware of exaggerated claims and avoid self-medication (e.g., iodine supplements) based on such tests.