JAMA : the journal of the American Medical Association
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Infection with Epstein-Barr virus (EBV) has been associated with an increased risk of multiple sclerosis (MS), but the temporal relationship remains unclear. ⋯ These results suggest a relationship between EBV infection and development of MS.
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The debate about the efficacy of prostate-specific antigen (PSA) screening for prostate cancer has received substantial attention in the medical literature and the media, but the extent to which men are actually screened is unknown. If practice were evidence-based, PSA screening would be less common among men than colorectal cancer screening, a preventive service of broad acceptance and proven efficacy. ⋯ Among men in the United States, prostate cancer screening is more common than colorectal cancer screening. Physicians should ensure that men who choose to be screened for cancer are aware of the known mortality benefit of colorectal cancer screening and the uncertain benefits of screening for prostate cancer.