Alzheimer's Universe (www.AlzU.org) was created for family members of people with AD, people with mild cognitive impairment due to AD and mild AD, as well as AD caregivers and healthcare providers. The website provides three evidence-based courses with interactive lessons and activities that have been shown to increase knowledge about AD, willingness to participate in an AD prevention clinical trial, and intent to make specific lifestyle changes in effort to reduce AD risk. AlzU.org also includes online cognitive assessment measures that are accessible via web and mobile app.