Harald Lesch examines the health impacts of noise pollution

In the Terra X documentary ‘Krank durch Krach’ (Sick from Noise), Professor Harald Lesch explores how various sounds affect human well-being. The film examines the dangers of noise pollution, ranging from street traffic and construction sites to aircraft turbines and high noise levels in restaurants.

Research indicates that constant exposure to noise can lead to chronic stress, as the brain perceives even subconscious sounds. The documentary highlights that the qualitative nature of sound is often more significant than pure volume; for instance, the difference between a jackhammer and birdsong can impact psychological health differently.

Lesch follows researchers in Munich who are studying how to create pleasant acoustic environments in urban areas and investigates the effects of absolute silence on the human body.