"We did not anticipate that there would be an increase in this group and we believe it may be an indicator of a new risk factor for gastric cancer which has not yet been identified."

VOA: standard.2010.05.12

There is no strong indicator that an STD causes prostate cancer, and researchers suspect that trichomonas is just one inflammation-causing factor that may contribute to the cancer or make it grow faster.

CNN: Prostate cancer linked to sexually transmitted disease