How are DNA Stoffwechseltest and fertility related?

DNA metabolism tests, such as those offered by MyBody-X, often analyze variants in the MTHFR gene (rs1801133), which regulates folate metabolism. Folate is critical for cell division and fetal neural tube development, suggesting a plausible link to fertility and pregnancy outcomes. However, the available GWAS data show associations of rs1801133 with homocysteine levels and other biomarkers, but direct clinical studies on fertility are lacking. Effect sizes are small (OR ~0.45–5.59) and not deterministic. The test cannot diagnose fertility issues or replace medical advice. Many claims are marketing-driven and not supported by robust evidence. A balanced diet rich in folate (e.g., leafy greens) is more impactful for fertility than a single genotype. Caution: Results should be interpreted alongside other factors (age, hormone status, lifestyle).