Renowned heart surgeon Dr Shriram Nene said heart disease remains a major health concern in India and globally, and people need to act on risk factors such as family history, diabetes, high blood pressure, physical inactivity and obesity

A recent study conducted by researchers from across disciplines at University of Delhi's Hindu College and Zakir Hussain College found that the capital's average winter PM2.5 concentration was nearly seven times the national standard and about 18 times of the WHO guideline