What do “epigenetic clocks” actually measure? These lab tests have become popular tools for studying biological aging, or how the body’s cellular function changes at a faster or slower rate than expected. However, the underlying biology behind each of these measurements has remained largely unknown until now.
A recent USC Leonard Davis School of Gerontology-led study published in npj Aging shows that five of the most widely used epigenetic clocks measure different aspects of biological aging. The research team also developed new gene expression-based clocks to complement existing epigenetic clocks, which show even stronger predictive power for age-related disease and mortality.
Biology versus the calendar
Scientists have long known that people ag...
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