It is no new news that chronic exposure to polluted air is really hard on lungs. Such high level of pollution is actually very unhealthy in the long term and leads to a number of health hazards.
Dr. Lindsay J. L. Forbes of University of London, UK, has reported the detailed study to Reuters. The smogs since the 1950s have been affecting the quality of life and high levels of pollution in the long term actually reduce lung function over time. The whole process is rather complex and cannot be just explained in layman terms but the scientist alludes to these extreme levels of pollution to be affecting many sides of our lives since long.