As research into longevity advances, scientists are finding new ways to test a once-speculative idea: that aging itself could become a target of medicine.

Researchers are investigating whether, instead of doctors waiting for age-related diseases to appear, it could be possible to measure and influence the biological changes that happen as we age.

The goal would be to intervene in the biological processes of aging before they contribute to disease, so that people would not just live longer, but also have more years of good health, known as health span.