SHOULD WOMEN UNDER 50 HAVE MAMMOGRAMS TO detect breast cancer? The National Cancer Institute and the American Cancer Society say yes -- every year or two. But a Canadian study last year seemed to say no, and an accumulation of new research supports that conclusion. While older women benefit from the specialized X-ray procedure -- those who have mammograms are less likely to die of breast cancer than those who don't -- there appears to be no difference in mortality for younger women. Mammograms may be much less likely to detect incipient tumors in younger women because their breast tissue is...
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