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Prostate Cancer

Obesity associated with lower PSA levels in men with prostate cancer

Published in Obesity and Diabetes Week, December 3rd, 2007

Higher body mass index (BMI) is associated with higher plasma volume, which may be related to lower prostate-specific antigen (PSA) levels among obese men, according to a study in the November 21 issue of JAMA.

Recent evidence has suggested that prostate cancer screening may be adversely affected by increased BMI. The ability to accurately detect prostate cancer can be compromised by any factor that decreases PSA concentration in the circulation, according to background information in the article. Several studies have found that obese men have lower PSA concentrations than non-obese men. "However, men with higher BMIs also have larger plasma volumes, which could...

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