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Vitamin C may protect reproductive health from potassium perchlorate (Level A1) — A glass of orange juice with a slice taken out of it

Vitamin C may protect reproductive health from potassium perchlorateCEFR A1

12 Jan 2026

LevelA1
A2
B1
B2

Adapted from Brian Consiglio-U. Missouri, Futurity • CC BY 4.0

Photo by Samantha Gilmore, Unsplash

Level A1 – Beginner
2 min
72 words
  • A team of scientists studied a chemical in the environment.
  • The chemical is potassium perchlorate in explosives and fireworks.
  • They used small fish called medaka for the tests.
  • Researchers exposed male fish to the chemical.
  • The chemical caused lower fertility in the male fish.
  • It also caused clear damage to the fish testes.
  • Another group of fish received vitamin C at the same time.
  • These fish had better fertility and less damage.

Difficult words

  • chemical — a substance used in products or experiments
  • environment — the natural world around people and animals
  • fertility — ability to produce young or offspring
  • testis — the male organ that makes sperm
    testes
  • expose — to put in contact with a substance
    exposed
  • vitamin — a nutrient that helps protect the body
    vitamin C

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 C?
  • Have you ever seen fireworks?
  • Do you like fish?

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