Conclusionsó Our study first shows a strong and independent association between ED and silent CAD in apparently uncomplicated type 2 diabetic patients. If our findings are confirmed, ED may become a potential marker to identify diabetic patients to screen for silent CAD. Moreover, the high prevalence of ED among diabetics with silent CAD suggests the need to perform an exercise ECG before starting a treatment for ED, especially in patients with additional cardiovascular risk factors. Prostate cancer: Prostate cancer doesn't cause ED on its own, but treatment (radiation, hormonal manipulation, or surgery to remove the cancer) can lead to erectile problems. Permanently alters or may injure erection bodies looking for viagra ? canadian pharmacy viagra for sale online Psychological causes: stress, mental disorders (clinical depression, schizophrenia, substance abuse, panic disorder, generalized anxiety disorder, personality disorders or traits.), psychological problems, negative feelings.