Complementary and alternative medicine (CAM) has been defined as “diagnosis, treatment and/or prevention which complements mainstream medicine by contributing to a common whole, satisfying a demand not met by orthodoxy, or diversifying the conceptual framework of medicine.
Many cancer patients seem to experience both physical (e.g. more energy, less pain or nausea) as well as psychological (e.g. less anxiety or depression) benefits from using CAM . Thus, many cancer patients try at least, one type of CAM . Reliable prevalence data do, however, not exist.