[Complementary and Alternative Medicine in Oncology - What Makes Sense?].

The basis of any complementary therapy should be the recommendation of a healthy lifestyle (diet, nutrition, exercise, stress-reduction), and appropriate self-help techniques (e. g. thermotherapy, herbal OTC-products) aimed at releasing the patients' most debilitating symptoms. For therapy-resistant or strong symptoms, more invasive interventions or medical treatments with an acceptable evidence base can be used (e. g. acupuncture for cancer pain, herbal prescriptions). The effects of any complementary intervention should be controlled for a period of six weeks after its administration. Patients should be advised not to use products or methods with possibly harmful side effects or negative interactions with conventional medications.