What to watch with Fitness Vitality DNA and allergy?

Combining Fitness Vitality DNA tests with allergy testing requires careful scrutiny. Current evidence indicates that direct-to-consumer (DTC) nutrigenetic tests for fitness and vitality traits are clinically unvalidated (evidence: unclear). For allergies, some genetic markers exist, such as HLA-DQA1 (rs2071559) for celiac disease, but this is not diagnostic – many carriers never develop celiac. Food intolerance tests (IgG or genetic) also have limited evidence; the gold standard remains an elimination diet. A DNA test alone cannot confirm an allergy or intolerance. The lactase persistence marker rs182549 (MCM6) is relevant for lactose intolerance, but genetics is only part of the picture. Be aware that such tests should not be used for medical diagnosis. If you suspect a true allergy, consult a doctor for specific IgE tests or provocation tests. Overall, the evidence for claimed associations is mixed to unclear, and many claims are driven by marketing rather than robust science.