Renowned cardiac expert Dr. Naresh Trehan has sounded a strong alarm over the rising air pollution in Delhi-NCR, calling it “a disaster for humanity.” He said public health is at “very high risk” with more people suffering from lung problems, asthma, and strokes, urging the government to stop the blame game and take serious action to curb stubble burning and pollution at the source. Top cardiologist Dr. Naresh Trehan, Chairman of Medanta Hospital, has called Delhi's air pollution a "public health emergency," warning that hospital visits for respiratory illnesses have tripled ... Dr. Naresh Trehan, a graduate from King George Medical College, is a renowned Cardiovascular and Cardiothoracic surgeon, trained and practiced at New York Unive more.. About Dr. Naresh Trehan Dr. Naresh Trehan, the Chairman and Managing Director of Medanta – The Medicity, Dr. Naresh Trehan is a world-renowned cardiovascular and cardiothoracic surgeon. He has been awarded the highly prestigious Padma Bhushan and the Padma Shri by the Government of India. Dr. Trehan has over 48,000 successful open heart surgeries to his credit and is the driving force behind the one-of-its-kind hospital.