Health Butler gets most of its information from the accredited organizations such as the Centers for Disease Control and Prevention (CDC), the National Institutes of Health (NIH), the U.S. Department of Health and Human Services (USDHHS), and other health organizations. This information is collected and analyzed by our Quality Assurance Committee and is then collated into the simple descriptions seen on our site. We frequently update our site and strive to provide our users with current information. The nature of medical information is such that changes occur rapidly and cannot always be immediately reflected in our website.