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Most US drug trials do not mirror racial and ethnic diversity — Level A2 — man in white chef uniform holding black and silver power tool

Most US drug trials do not mirror racial and ethnic diversityCEFR A2

17 Dec 2025

Adapted from Jules Bernstein - UC Riverside, Futurity CC BY 4.0

Photo by National Cancer Institute, Unsplash

Level A2 – High beginner / Elementary
2 min
109 words

Researchers at two California universities reviewed pivotal clinical trials done between 2017 and 2023. They found that only a small share of trials used to approve new drugs reflect the United States racial and ethnic makeup. Enrollment of Black and Hispanic people fell from 2021, while Asian participation rose and white participation stayed mainly steady.

The study notes many trials follow International Council for Harmonisation standards and take place in a few regions. It says much of Africa and large parts of Latin America are rarely included. The authors recommend setting diversity goals early, choosing testing locations to match local needs, and collecting biological samples to study drug responses.

Difficult words

  • triala medical study to test a medicine
    clinical trials, trials
  • enrollmentthe act of people joining a study
  • diversitythe presence of many different kinds of people
    diversity goals
  • regiona large area of a country or world
    regions
  • samplea small biological part taken for study
    biological samples
  • approveto officially allow or accept something

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

Discussion questions

  • Why is it important for drug trials to include people from different racial and ethnic groups?
  • What can researchers do to include people from Africa or Latin America?
  • Would you join a clinical trial? Why or why not?

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