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PFAS exposure weakens adults’ immune response — Level A1 — a sign that is lit up in the dark

PFAS exposure weakens adults’ immune responseCEFR A1

24 Apr 2026

Adapted from Michigan State, Futurity CC BY 4.0

Photo by Phill Brown, Unsplash

Level A1 – Beginner
2 min
76 words
  • New scientific study shows PFAS weaken adult immune systems.
  • PFAS are used in many household products today.
  • Examples include nonstick pans and stain-resistant fabrics.
  • These chemicals do not break down in nature.
  • PFAS can build up slowly in the human body.
  • People exposed by contaminated drinking water show higher levels.
  • Higher PFAS levels made bodies produce fewer antibodies.
  • Fewer antibodies mean a weaker response to new viruses.
  • Some families already see health problems from exposure.

Difficult words

  • immuneProtected from certain diseases or infections
  • householdThings used in a home
  • chemicalA substance used in products or industry
    chemicals
  • contaminateMake something dirty or unsafe
    contaminated
  • antibodyA protein the body makes to fight germs
    antibodies
  • weakenMake something less strong or effective

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

Discussion questions

  • Do you have nonstick pans at home?
  • Do you drink tap or bottled water at home?
  • Are you worried about chemicals in products you buy?

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