Exposure to noise seriously harms human health. It can cause sleep disturbances or heart and metabolic conditions, it affects performance at school and work and triggers changes in social behavior. Specialists at Swiss TPH investigate how exposure to road, railway or aircraft noise causes sleep disturbances and heart and metabolic disorders of people living in Switzerland and abroad. They determine source-specific exposure-response functions due to the acoustical characteristics of noise and elucidate the role of individual factors such as age, gender, noise sensitivity and genetic predispositions. A better understanding of the health impact of noise exposure is highly relevant for regulating environmental noise.