HealthDirectory4U.com provides useful information on health, fitness, alternative medicine, animal health, dentistry, fitness, health insurance, long term care, nutrition, pharmacy, weight loss & yoga.
The Foundation to Further Consciousness
Gives information about various techniques of expanding consciousness and does research into the physiology underlying it.
http://www.brainbloodvolume.com/
Trepanation Guide
An indepth source of information on medical and historical aspects of this ancient surgical procedure. Includes references and citations as well and advanced reading suggestions.
http://www.trepanationguide.com/
Trepanation Trust
provides scientific information, images, and articles about the practice of trepanation, including people who've done it themselves
http://www.trepanation.com/