National Geographic
June 9, 2025 at 05:30 PM
A simple blood draw might now detect returning cancer months before a scan ever could—but is earlier always better? Personalized blood tests that analyze circulating tumor DNA are showing promise in spotting microscopic recurrence in cancers like lung and colon. But with high costs, emotional stress, and uncertain survival benefits, experts are urging caution.
https://on.natgeo.com/BRWA06092025
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