Quick answer
Telomeres: definition
Telomeres are protective caps at the ends of chromosomes that shorten with each cell division; very short telomeres can trigger cell senescence.
Telomeres, explained
Telomere length is associated with aging, but it's highly variable between people and less precise than epigenetic clocks for estimating individual biological age.
Why it matters
Telomere attrition is one of the hallmarks of aging.
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Telomeres FAQs
What is Telomeres?
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