SAN JOSE, Calif. — Researchers at Stanford University have developed a new tool that can compute the “biological age” of human organs by processing a single vial of blood. The tool, unveiled ...

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A new Stanford study used blood proteins to analyze the "biological" age of brains and other organs compared to the person's actual age.

I feel healthy overall — but I had to wonder: is my vegetarian lifestyle helping me age gracefully, or quietly wearing me down? To find out, I turned to Function Health’s biological age test.

Direct-to-consumer biological age tests promise insights into how your body is aging, but experts say they should be taken with caution.

Direct-to-consumer biological age tests promise insights into how your body is aging, but experts say they should be taken with caution.

Biological age tests aim to capture some of these changes, offering a snapshot of how well, or how poorly, we are aging on a cellular level. Our DNA is also affected by the aging process.