India, Sept. 6 -- Your chronological age and organ age may not always go hand in hand. Sometimes, younger people have organs that have aged beyond their years, and the lungs are no exception. This means you may be young, but your lungs could be functioning like those of someone much older.ALSO READ: Can non-smokers get lung cancer? Pulmonologist shares 5 preventive habits

Much like chronological age, lung age is expressed in years, but it tells how well your lungs are functioning and whether they have sustained premature damage. What does a specialist have to say on this?

Dr Souparna Saha, pulmonologist at Naryana RN Tagore Hospital, Mukundapur, Kolkata, described what lung age means, why younger adults may have older lungs, and which f...