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Researchers at Johns Hopkins University have developed a blood test capable of detecting cancer up to three years before symptoms appear. The test identifies circulating tumor DNA in blood samples, offering a potential window for early intervention and improved treatment outcomes. Using samples from the Atherosclerosis Risk in Communities (ARIC) study, the researchers demonstrated the test's ability to detect cancer markers well in advance of diagnosis. This early detection could lead to less aggressive treatments and improved survival rates, potentially reshaping annual physicals and cancer screening. Further research is needed to refine accuracy and accessibility.

Prepared by Olivia Bennett and reviewed by editorial team.