Lung cancer is one of the deadliest cancers which is a leading cause of death worldwide. Usually associated with people who smoke, lung cancer can also exhibit a few lesser-known symptoms, and one among them is clubbing – a condition that causes your nails to grow larger towards the fingertips. The condition also makes the nails bulge and curve downwards and doctors say at least 80 per cent of people with lung cancer develop this. Read on to know more about it. , Health News, Times Now