The health care industry incorporates several sectors that are dedicated to providing health care services and products. As a basic framework for defining the sector, the United Nations’ International Standard Industrial Classification categorises health care as generally consisting of hospital activities, medical and dental practice activities, and “other human health activities”. The last class involves activities of, or under the supervision of, nurses, midwives, physiotherapists, scientific or diagnostic laboratories, pathology clinics, residential health facilities, patient advocates, or other allied health professions, e.g. in the field of optometry, hydrotherapy, medical massage, yoga therapy, music therapy, occupational therapy, speech therapy, chiropody, homeopathy, chiropractics, acupuncture, etc.
In addition, according to industry and market classifications, such as the Global Industry Classification Standard and the Industry Classification Benchmark, health care includes many categories of medical equipment, instruments and services as well as biotechnology, diagnostic laboratories and substances, and drug manufacturing and delivery.
For example, pharmaceuticals and other medical devices are the leading high technology exports of Europe and the United States.The United States dominates the biopharmaceutical field, accounting for three-quarters of the world’s biotechnology revenues