[State of respiratory system under prolonged exposure to aerosols and vapors of heavy metals salts].

Study covering 480 male workers of chemical enterprise revealed that chronic exposure to allowable ambient air concentrations of metal salts doubles occurrence of respiratory tract diseases. 75% of the healthy workers constantly exposed to heavy metal salts demonstrate lower level of oxidative processes, and 15% of the examinees were diagnosed as having primary histotoxic hypometabolism.