Obesity may interfere with prostate cancer blood test
(USA Today) UPDATED 2007-11-20
Blood tests that screen for prostate cancer may not be able to
accurately diagnose the disease in obese men, new studies show.
Obese men have lower concentrations of prostate-specific antigen
(PSA) in their blood, either because they have higher blood volume
or lower levels of testosterone, researchers suggest. Because most
cases of prostate cancer are diagnosed after a blood test registers
high PSA levels in the blood, obesity could cause the test to miss
the presence of the disease.
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