Evidence check: Nährstoffcheck in the context of longevity

A nutrient check (Nährstoffcheck) as offered by MyBody-X (e.g., VitalCheck Basic or Women’s Wellness Check) measures biomarkers such as vitamin D, iron/ferritin, thyroid profile, cholesterol, and HbA1c. These provide a snapshot of current nutritional status but are not specifically validated for longevity. The evidence linking individual nutrient levels to extended lifespan is weak and largely based on observational studies. Longitudinal data showing that optimizing these markers via testing significantly increases life expectancy are lacking. MyBody-X itself markets the tests as providing 'impulses for everyday life' without medical evaluation – indicating a marketing focus. Scientifically, nutrient checks are useful for detecting acute deficiencies, but as a longevity tool they are insufficiently supported. Portability issues (similar to polygenic scores) also apply, as reference ranges are often based on Caucasian cohorts. Conclusion: The nutrient check is a helpful tool for general wellness, but longevity claims are marketing-driven and not evidence-based.