For additional information see these links:

The National Institutes of Health’s National Center for Complementary and Alternative Medicine is a good source of information on acupuncture:

http://nccam.nih.gov/health/acupuncture/introduction.htm

The Mayo Clinic also has a useful introduction on acupuncture:

http://www.mayoclinic.com/health/acupuncture/sa00086

Wikipedia’s entry on acupuncture gives a breadth of information, including history and information on scientific studies of acupuncture:

http://en.wikipedia.org/wiki/Acupuncture

Medline Plus is a website of health information maintained by the U.S. National Library of Medicine and the National Institutes of Health; this site has basic information on acupuncture and also provides many links to further information:

http://www.nlm.nih.gov/medlineplus/acupuncture.html