DirectoryHealthcare.com provides the useful information on animal health, diseases & conditions, fitness, general health, long term care, mental health, nutrition, weight loss & yoga.
Alzheimer Research Forum Has plenty of research information for both the professional and the patient. http://www.alzforum.org/
Alzheimer's Research Center Information about treatment and prevention of Alzheimer's disease and other dementing illnesses. http://www.alzheimersinfo.org
Taub Institute for Research on Alzheimer's Disease and the Aging Brain Sponsored by the U.S. National Institute on Aging, facilitating research and educational programs relating to Alzheimer's Disease and other age-related neurodegenerative diseases. http://www.alzheimercenter.org