A lifespan is the length of time a living organism lives. The study of lifespan is called gerontology and the science of lengthening life is called biogerontology. There are many different contributing factors to lifespan, including genetics, lifestyle choices, and access to healthcare.
The longest-lived human on record was Jeanne Calment, who lived to be 122 years old. However, the average lifespan has increased significantly over the past century due to advances in medicine and public health. In 1900, the global average life expectancy was just 31 years old. Today, it is 72 years old.
There are many different contributing factors to longevity and scientists are still working to understand all of them. Genetics plays a role in how long an individual will live but lifestyle choices also play a significant part. For example, individuals who smoke cigarettes or don’t exercise regularly tend to have shorter lifespans than those who live healthier lifestyles. Additionally, people who have access to quality healthcare tend to live longer than those who don’t.
While we have made great strides in lengthening lifespans over the past century, there is still much work to be done. Scientists continue to research ways to further improve public health and increase longevity for all humans beings across the globe.