Life expectancy has dramatically increased over the centuries, rising from around 20 years to 78 today, largely due to advancements in infant mortality rates. The significant gains in the 20th century stemmed from saving young lives, allowing more individuals the chance to grow old. Interestingly, life expectancy continues to rise, with an additional three months added each year for those reaching age 65. This ongoing trend reflects not just longer lives, but healthier ones as well.
