Exposure to radiation from medical tests is a very important problem and in the New England Journal of Medicine, they took a look. A study of 952,000 non-elderly adults found that over two-thirds were exposed to twice as much radiation as they would have received from natural sources because of medical imaging. Women and older individuals were at greater risk for radiation exposure. The study found that CT scans and nuclear tests accounted for three-quarters of non-treatment-based medical radiation exposure. An accompanying editorial called for the clinical trials to prove whether or not diagnostic tests and imaging prevented major medical problems or reduced costs, or whether they're worth the inherent risk of developing cancer from radiation exposure. A report by the National Council on Radiation Protection and Measurement, Americans are exposed to a great deal of radiation.
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