Its worth quoting this extract from  here  A series of publications has focused on the effects of exposure to low frequency  Hz high intensity  dB noise a range of structural lung changes having been reported mainly in rats but also in humans These data suggest that low frequency high intensity noise may lead to structural and functional changes in the airways pleural mesothelium and lung parenchyma With frequencies from commercial loud speakers typically in the range of  Hz to  kHz it is the lower frequency band of  Hz which is usually boosted in big music venues for enhanced effect These low frequencies could indeed be particularly damaging to the lung parenchyma if they coincide with its natural frequency of around  Hz Furthermore Mahagnah and Gavriely showed that in normal humans the lung acts as a low pass filter with flat transmitted energy up to  Hz or  Hz In view of these experimental results the most compelling observation in our four patients is that the lower frequency band which tends to be boosted in the kind of music they listen to corresponds with those frequencies thereby ensuring maximal acoustic energy transfer to the lungs