Below are some helpful Internet resources on this topic. Mayo Clinic does not own or control any of these sites and is not responsible for their content. Inclusion of these sites does not imply endorsement by Mayo Clinic.
www.nlm.nih.gov/medlineplus/
MEDLINEplus National Library of Medicine
nccam.nih.gov
National Center for Complementary and Alternative Medicine, part of the National Institutes of Health
www.ninds.nih.gov
National Institute of Neurological Disorders and Stroke
www.arthritis.org
Arthritis Foundation