Harvard Health Letter

Can this DNA test help predict your longevity?

Telomeres-made of your DNA-are biomarkers of aging. There’s no crystal ball in medicine that can predict how fast you’re aging or how long you’ll live. But the latest trend in private screening tests claims to provide a tantalizing clue. The tests offer a snapshot of the length of your telomeres—the protective caps at the ends of chromosomes in your cells. …

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