“In the US, lung cancer causes most cancer deaths in a year, but it is now on a decline as the rate of incidence had reduced from 40 per cent of all the cancer cases to 30 per cent,” he said.

Showing concern over lung cancer being detected in younger age groups, Dr Bains said that even youth of 21 to 23 year age group have been detected with lung cancer. “The reason why rate of death by lung cancer is high is because the disease comes to light at a later stage. Therefore, people should be careful about the chest problems,” he said. Dr Bains said though it is difficult to say whether the lung cancer is also caused due to familial reasons, the possibility still could not be ruled out.