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Hot, humid pregnancy harms child growth more than heat alone — Level A1 — A man riding a bike down a street next to a woman

Hot, humid pregnancy harms child growth more than heat aloneCEFR A1

20 Dec 2025

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Adapted from Harrison Tasoff-UC Santa Barbara, Futurity • CC BY 4.0

Photo by Leo_Visions, Unsplash

Level A1 – Beginner
2 min
79 words
  • Many regions are hot and very humid.
  • Humidity makes it hard for the body to cool.
  • This can affect a woman in pregnancy.
  • Heat and humidity during pregnancy harm child growth.
  • The strongest harm is very early or very late.
  • Late pregnancy can cause heat-related early labor.
  • Researchers compared heat alone with heat plus humidity.
  • They used weather and child health records to study.
  • Many people live near hot coastal areas.
  • They want better weather warnings for pregnancy.

Difficult words

  • humidity — amount of water in the air
  • pregnancy — time when a woman has a baby inside
  • harm — to cause damage or a negative effect
  • coastal — near the sea or the ocean
  • warning — a message that tells people about danger
    warnings

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

Discussion questions

  • Have you ever felt very hot and humid weather?
  • Do you live near the sea or the coast?

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