What to watch with Fertility Check and Haut?

When combining a Fertility Check and a Skin (Haut) test, be aware of several limitations. Fertility Check panels often include MTHFR, but routine MTHFR testing is not recommended by the USPSTF (PMID:37526720) or professional societies (PMID:38474735); standard folate supplementation (400–800 µg) is sufficient regardless of genotype. Skin tests claim to personalize skincare based on genes for collagen, antioxidants, etc., but the evidence for actionable, clinically meaningful predictions is weak (AHA, PMID:40079117). Furthermore, polygenic risk scores (PRS) for fertility or skin aging often lack portability across ancestries (PMID:36477530, 38374345). Combining both tests may inflate perceived accuracy and lead to unnecessary supplement use (e.g., high-dose methylfolate) or unwarranted anxiety. Safety note: high-dose methylfolate can mask vitamin B12 deficiency. Consult a healthcare professional before making decisions based on these tests. They provide correlational, not diagnostic, insights.