Summary:

- This article discusses the concept of "biological age" - the age of a person's body and organs, which can be different from their chronological age.
- Researchers have developed methods to measure biological age, such as analyzing DNA methylation patterns, which can provide insights into a person's overall health and lifespan.
- The article explains that factors like lifestyle, genetics, and environmental exposures can influence a person's biological age, and that understanding one's biological age can help individuals take steps to improve their health and longevity.