Saturday, August 1, 2026
Science

Q&A: Why do telomeres shorten when a cell divides, and how does it affect human aging?

In each cell of your body, DNA is stored in structures called chromosomes. When cells divide, these chromosomes are copied, but over time, the copying process degrades. After many cycles of making copies, the ends of the chromosomes become shorter and can sometimes get damaged. Thankfully, we have t...

Q&A: Why do telomeres shorten when a cell divides, and how does it affect human aging?
Image: Phys.org
In each cell of your body, DNA is stored in structures called chromosomes. When cells divide, these chromosomes are copied, but over time, the copying process degrades. After many cycles of making copies, the ends of the chromosomes become shorter and can sometimes get damaged. Thankfully, we have telomeres, which are like protective caps on the ends of our chromosomes that help to decrease the damage when cells divide.

Originally published at Phys.org

The Morning Briefing

Subscribe to our Newsletter

Be the first to receive the latest news, market analysis and updates — delivered straight to your inbox.