President Obama’s 2010 overhaul of the nation’s health insurance system appears to have helped significantly reduce the number of uninsured American young adults, according to a new Gallup survey and U.S. Census data.

The percentage of 18- to 25-year-olds without health insurance dropped 3.6 points since the third quarter of 2010, when a key provision of the Affordable Care Act allowing many young adults to remain on their parents’ health plans first took effect, Gallup found.

Roughly one quarter – 24.4 percent – now report being uninsured, down from 28 percent late last year. The decline represents nearly 1 million more young adults who now have health insurance, according to official estimates based on the Gallup data.

“Going without coverage puts every young American just a car accident or surprise diagnosis away from a lifetime of medical debt or worse,” said Health and Human Services Secretary Kathleen Sebelius. “The good news is today one million young adults are no longer living with that fear and uncertainty.”

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The Gallup findings were corroborated by a separate U.S. Census analysis released earlier this month that also noted a decline in uninsured young adults and simultaneous increase in those with coverage.  Both studies attributed the change to the Affordable Care Act.

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