Can we measure how rapidly our bodies are aging?

Scientists have discovered new ways to measure how rapidly the body is aging. For example, it’s possible to determine body age by measuring the length of telomeres—the ends of the chromosomes inside of every cell. And a 2024 study found that levels of certain proteins in the blood correspond to body age. It’s hoped that this information can help lead to anti-aging treatments and also help motivate people to make lifestyle changes (if necessary) to slow the process.