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Why Do Some Animals Live Longer Than Others? — white mouse lot toy

Why Do Some Animals Live Longer Than Others?CEFR A2

24 Nov 2025

Adapted from Iqbal Pittalwala - UC Riverside, Futurity CC BY 4.0

Photo by James Wainscoat, Unsplash

AI-assisted adaptation of the original article, simplified for language learners.

A new study found that a process called alternative splicing helps explain why some mammals live longer than others. This study looked at 26 species of mammals with lifespans that vary greatly.

Researchers discovered that how genes are spliced, rather than just how active they are, is important for maximum lifespan. They found interesting patterns in the brain, showing it plays a key role in lifespan and health.

This research suggests that specific changes in splicing can help us understand aging better and may help create ways to promote healthy aging.

Difficult words

  • splicingJoining parts of genes together.
  • lifespanLength of time a living thing lives.
  • speciesGroup of similar living things.
  • researchGathering information or facts about something.
    study
  • discoverFind out something new.
    discovered
  • agingProcess of getting older.
  • promoteHelp something grow or succeed.

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Why do you think some mammals live longer than others?
  • How can understanding splicing help us with health?
  • What ways might promote healthy aging in the future?

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