welche allergien gibt es — can a DNA test help?

DNA tests for allergies have very limited clinical utility. While certain genetic variants (e.g., in HLA genes or filaggrin) are associated with increased risk for some allergic conditions, the effect sizes are small and predictive value for individuals is negligible. Allergies are multifactorial, involving genetics, environment, microbiome, diet, and immune history. A DNA test cannot diagnose an allergy or reliably predict its onset. Clinical allergy testing (specific IgE, skin prick) remains the gold standard. Direct-to-consumer genetic tests often overstate the relevance of single SNPs, leading to false reassurance or unnecessary worry. If you have allergy symptoms, consult an allergist rather than relying on a DNA test. The evidence for DNA-based allergy prediction is weak and mostly based on association studies without clinical utility.