Summary:

- Researchers have developed a new "urine aging clock" that can determine a person's biological age based on the chemical composition of their urine.
- This method is more accurate than traditional methods that rely on physical appearance or blood tests, as it can detect subtle changes in the body at the molecular level.
- The urine aging clock could be used to monitor the effects of lifestyle changes, diet, or medical treatments on a person's overall health and aging process.