Myths vs facts: Fertility Check and Fruchtbarkeit

The question of myths vs facts around fertility tests (e.g., MyBody-X Fertility Check) is important, as many direct-to-consumer products overpromise. Fact: Fertility is multifactorial – hormones, age, lifestyle, genetics, environment. A single test (blood, saliva, DNA) captures only a small piece. Myth: A DNA test for single variants (e.g., GPX1 or FOXO3) predicts fertility. Evidence is mechanistic or GWAS-based, not clinically validated for fertility. Fact: Hormonal markers like AMH, FSH, or estradiol have stronger evidence but are time-dependent and require doctor interpretation. Myth: A 'fertility score' from DNA is a reliable predictor. Reality: Effect sizes of individual SNPs are tiny, and most studies are population-level, not individual. Safety note: Anyone with fertility concerns should consult a specialist, not rely solely on DTC tests. The provided context lacks specific fertility studies, so evidence is rated 'marketing/unclear'.