Ronald Reagan Alzheimer's Breakthrough Act of 2005

Ronald Reagan Alzheimer's Breakthrough Act of 2005 - Amends the Public Health Service Act to make Alzheimer's disease research a priority within the National Institute on Aging. Requires the Director of the Institute to: (1) undertake an Alzheimer's Disease Prevention Initiative to accelerate the discovery of new risk and protective factors, to rapidly identify therapies and preventive interventions, and to implement effective prevention and treatment strategies; (2) conduct and support cooperative clinical research regarding Alzheimer's; and (3) conduct research concerning early detection and diagnosis, the relationship between Alzheimer's and vascular disease, and interventions designed to help caregivers. Authorizes the Director to establish a National Alzheimer's Coordinating Center to facilitate collaboration among Alzheimer's Disease Centers and Alzheimer's Disease Research Centers.

Requires the Secretary of Health and Human Services, acting through the Director of the Centers for Disease Control and Prevention (CDC), to educate the public and public health community regarding Alzheimer's disease.

Authorizes the Secretary to award grants or cooperative agreements to develop coordinated respite care programs on a statewide basis. Defines "respite care" to mean planned or emergency care provided to a child or adult with a special need in order to provide temporary relief to the family caregiver of such child or adult. Directs the Secretary to award a grant or cooperative agreement to a public or private nonprofit entity to establish a National Resource Center on Lifespan Respite Care.