Researchers at Stanford have developed a test that estimates the biological age of organs by analyzing a vial of blood, with the potential to revolutionize health care.

The groundbreaking test, coordinated by Professor Tony Wyss-Coray, uses artificial intelligence to compare protein levels in the blood with average age values, thus estimating the 'biological age' of organs. The study of 45,000 people showed that biologically aged organs are associated with an increased risk of chronic diseases. Although the test promises to improve health monitoring, bioethics experts warn of the risks of its use, including possible strain on the transplant system.