Health Butler's health information is derived from information published by a number of reliable government sources including the National Institutes of Health (NIH), Centers for Disease Control and Prevention (CDC), U.S. Department of Health and Human Services, and various disease-specific organizations including the American Cancer Society (ACS), American Heart Association (AHA), and others. Citations are provided at the bottom of every page containing referenced information. Our goal is to provide you with the clearest, most fundamental descriptions of research-supported screening procedures, immunizations, and other preventative healthcare measures. We encourage you to read our descriptions for a good overview, and if you want more detail we highly recommend enhancing your knowledge by visiting other accredited health information websites. Make wellness a priority by taking control of your own preventive care.

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