EurekAlert! -- Physicians who prescribe erectile dysfunction drugs for their male patients should be sure to discuss the importance of safer sex practices, even with older patients: that is an important implication of a report in the July 6 issue of Annals of Internal Medicine. The analysis of insurance records of more than 1.4 million U.S. men over 40 found that those who used ED drugs were more likely to have sexually transmitted diseases than were non-users.