CT scans could cause 5% of cancers, study finds; experts note uncertainty

Photo: CT scan machine. Photo credit: U.S. Navy photo by Journalist Seaman Joseph Caballero (RELEASED). Wikimedia. Public Domain. Article by Beth Mole. Ars Technica – Apr 14, 2025. Study: JAMA Internal Medicine.

Computed tomography scans have become vital, even lifesaving, medical imaging for diagnosing and monitoring health conditions. But they do expose patients to ionizing radiation at levels linked to higher risks of cancer. In a new study in JAMA Internal Medicine, researchers tried to estimate what those higher risks are exactly—and although the estimates come with uncertainty, they may seem startling. […]

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