Pulmonology is a branch of medical science that deals with issues associated with the respiratory tract.

Lifespan is defined as the time period which a healthy individual should live under normal circumstance. One can increase their life expectancy by leading a healthy lifestyle and availing the best treatment in case of any illness. Life expectancy, however, can also get disrupted due to several health and environmental factors. While one can do very little about any accidents, taking some precautions can help people avoid certain life-threatening diseases.