(REUTERS) — Breast cancer screenings may not lead to fewer deaths, suggests a new study of U.S. data.
In areas of the U.S. with high levels of screening, more tumors were diagnosed - but breast cancer death rates were no lower than in areas with fewer screenings, researchers report.
Each year, about 230,000 U.S. woman are newly diagnosed with breast cancer, according to the National Cancer Institute.
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While screening guidelines very, the government-backed U.S. Preventive Services Task Force says average-risk women should have mammograms every other year between ages 50 and 74. Getting screened before age 50 should be an individual decision, according to the Task Force.