Video: What is the secret to a healthy immune system?

Erika Mutius
Head of the Asthma and Allergy Department, University of Munich, Germany

Erika Mutinus from Ludwig-Maximilians University of Munich, Germany, says children who grow up on farms are less likely to develop allergies. Her research shows that exposure to bacteria and viruses can help build a healthy immune system.

Author: Erika von Mutius is head of the Asthma and Allergy Department of the Dr. von Hauner Children’s Hospital of the University of Munich, Germany.

Image: Cows look on during feeding. REUTERS/Eduard Korniyenko. 

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