NSAID painkillers, statins, and some diuretics may distort the results of prostate cancer screening tests, according to a new study. A diagnosis of prostate cancer is commonly made on a high PSA (prostate-specific antigen) level, but researchers found that some common drugs may lower PSA levels and distort test results.

"Our study reveals that men regularly consuming NSAIDs [non-steroidal anti-inflammatory drugs], statins, and thiazide diuretics may have lower serum PSA levels compared to men who are not taking these medications," Dr. Steven L. Chang, lead author of a paper published in the Journal of Clinical Oncology, said in a HealthDay report.

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