What role does Nährstoffcheck play in allergy?

A nutrient check (e.g., MyBody-X) measures biomarkers like vitamin D, zinc, omega-3, or iron, which can influence immune function. In allergy, some observational studies suggest that deficiencies in vitamin D or zinc may be associated with increased allergic responses, but the evidence is not strong enough to recommend routine nutrient testing for allergy management. The check can identify potential gaps, but it does not diagnose allergies or replace clinical allergy testing (e.g., skin prick or specific IgE). Results should be interpreted cautiously; they are not a substitute for medical advice. Evidence: practice/unclear. No direct clinical trials from the provided context support a causal role of nutrient status in allergy outcomes.