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MODEL RELEASED. Allergy test result. Complementary medicine practitioner discussing the results of an allergy test with her patient. A sensor (black rod at lower centre) was pressed against acupuncture points on the skin, measuring electrical signals and identifying any that are abnormal. It is used to diagnose allergies to environmental pollutants and food types. This informs the patient which substances need to be avoided, reducing fatigue, aches and other ailments. It is based on the principles of acupuncture, in which energy flows through the body in channels, and blockages lead to disorders. (KEYSTONE/SCIENCE PHOTO LIBRARY/ANNABELLA BLUESKY/SOCIETY FOR COMPLEMENTARY MEDICINE)