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Do low‑calorie sweeteners affect blood sugar and health? (Level A1) — white digital device beside white pen

Do low‑calorie sweeteners affect blood sugar and health?CEFR A1

8 Jul 2026

Adapted from Tufts University, Futurity CC BY 4.0

Photo by Towfiqu barbhuiya, Unsplash

Level A1 – Beginner
2 min
84 words
  • Many foods and drinks now have low-calorie sweeteners.
  • People often use them to reduce added sugar intake.
  • Scientists are studying whether they affect blood sugar.
  • Randomized trials compare sweeteners with water or placebo.
  • Trials found higher fasting insulin after using sweeteners.
  • Some studies also saw worse long-term blood sugar measures.
  • Gut microbes may change when sweeteners pass through.
  • Experts say to be cautious and study more.
  • Replacing lots of sugary drinks might be better.
  • Labeling often lists sweeteners but not their amounts.

Difficult words

  • sweetenersubstance that gives food a sweet taste
    sweeteners
  • randomizeto put things in no set order
    Randomized
  • triala scientific test of a treatment or idea
    Trials
  • insulina hormone that controls blood sugar
  • microbea very small living thing often in the body
    microbes
  • labelinformation on food packages about contents
    Labeling

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

Discussion questions

  • Do you drink sugary drinks?
  • Do you check labels when you buy food?
  • Would you choose water instead of a sugary drink?

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