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A study at Ohio State University found that those who at fast food every day saw test scores improve 20 percent less than those who didn't over three years. The test started when children were 10 years old, and compared test scores in reading, math and science.

Even when researchers took other variables into account, the fast food seemed to have a significant effect.

Read The Washington Post's full breakdown, or check out the original study (Note: Most of the study is behind a paywall.)

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A 1-year-old receives the measles-mumps-rubella vaccine at a clinic in Texas. Of the nearly 2,000 U.S. measles cases reported this year, 93% of those who were infected were unvaccinated or their vaccination status was unknown, according to the Centers for Disease Control and Prevention. (Jan Sonnenmair/Getty Images)

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Yemaya Lyles (right) wipes away tears during a news conference in front of the Rockdale County Public Schools administration building on Tuesday, Dec. 19, 2023. Lyles' son, Antonio, was assaulted by a paraprofessional, who has since been fired and charged with battery. Lyles says her case against the school district has dragged on since then. (Miguel Martinez/AJC 2023)

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