Is Folsäure useful for Allergie?

The usefulness of folic acid (folate) for allergies is not well supported by current evidence. Some observational studies suggest that adequate maternal folic acid intake during pregnancy may be associated with a lower risk of childhood allergies, but results are inconsistent and other studies show no effect or even an increased risk. For adults with existing allergies, there is no strong evidence that folic acid supplementation provides benefit. While folate plays a role in immune function, high-dose supplementation can mask vitamin B12 deficiency and is not recommended without a confirmed deficiency or medical advice. Overall, the evidence is mixed and insufficient to recommend folic acid for allergy prevention or treatment. Standard allergy management (e.g., antihistamines, avoidance, immunotherapy) remains the priority.