Since the Q-fever epidemic, public worries about the relationship between living near livestock farms and potential health effects have risen in the Netherlands. Wageningen and colleague-institutes have studied this possible relationship. They tested the air quality nearby livestock farms and e.g. looked at anonymized patient dossiers and blood, feces and lung capacity tests. Close to livestock farming, less cases of asthma and nose allergies are seen but more cases of pneumonia. Ammonia emissions are related to reduced lung capacities. The study forms a basis for policy, dialogue and more in-depth research.