Evidence check: Folsäure in the context of Allergie

The evidence on folic acid (folate) in the context of allergies is mixed and inconclusive. Some observational studies suggest that high maternal folic acid intake during pregnancy may be associated with a slightly increased risk of childhood allergies (e.g., asthma, eczema), while others find no association or even a protective effect. The mechanisms are not well understood, and confounding factors (diet, lifestyle, genetics) are difficult to control. The provided context (MyBody-X) does not contain specific data on folic acid and allergies. Consumer DNA tests may include variants in folate-related genes (e.g., MTHFR), but their predictive value for allergy risk is negligible. Folic acid is essential for health, especially before and during pregnancy, but excessive supplementation (above 1 mg/day) is not recommended without medical need. For allergy prevention, a diverse diet rich in natural folates (leafy greens, legumes) is prudent. Evidence level: mixed/unclear. Caveat: No strong causal link established; individual risk assessment requires clinical evaluation.