Over the past few decades, life expectancy has increased dramatically around the globe. In ancient times, the recorded life span of human beings was around 50-60 years. But, in the present era, a significant change can be seen, increasing the life span to a new number range i.e., from 70-80 years approximately. The causes behind this change are various. However, this discrepancy is carried out in different ways by today's population. Some hold this as an advantage and few see this as a disadvantage.