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High-dose antioxidants may harm sperm and offspring — Level A1 — white mouse lot toy

High-dose antioxidants may harm sperm and offspringCEFR A1

16 Feb 2026

Adapted from Texas A&M University, Futurity CC BY 4.0

Photo by James Wainscoat, Unsplash

Level A1 – Beginner
2 min
81 words
  • A new study found harm from antioxidants in mice.
  • Researchers gave antioxidant supplements to male mice.
  • Male mice took antioxidants before mating with females.
  • The supplements can damage sperm and sperm DNA.
  • Baby mice showed changes in head and face shape.
  • Female pups had smaller heads and closer-set eyes.
  • Fathers looked healthy but babies still changed.
  • High antioxidant doses can be unbalanced and harmful.
  • Many vitamin pills include strong antioxidant ingredients.
  • Men who plan children should be careful with supplements.

Difficult words

  • antioxidanta substance that can stop some cell damage
    antioxidants
  • supplementa pill or substance taken for extra vitamins
    supplements
  • damageto cause harm or injury to a person or thing
  • spermmale reproductive cells used for fertilization
  • dosea measured amount of medicine or supplement
    doses

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

Discussion questions

  • Do you take vitamin pills?
  • If you planned a child, would you be careful with supplements?
  • Do you know anyone who takes supplements?

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