Health care (often healthcare in American English), is the treatment and management of illness, and the preservation of health through services offered by the medical, dental, complementary and alternative medicine, pharmaceutical, clinical sciences ( in vitro diagnostics), nursing, and allied health professions. Health care embraces all the goods and services designed to promote health, including “preventive, curative and palliative interventions, whether directed to individuals or to populations”. The definition of health care is continously evolving, and varies significantly between different cultures..
Before the term health care became popular, English-speakers referred to medicine or to the health sector and spoke of the treatment and prevention of illness and disease. The social and political issue of access to healthcare in the US has led to public debate and confusing use of terms such as health care (medical management of illness or disease), health insurance (reimbursement of health care costs), and the public health (the collective state and range of health in a population). The public health is related most to economic development and wealth distribution, and health insurance is a business which both provides and restricts reimbursement for healthcare itself in the event of disease, or in access to of medical healthcare in individual health-seeking, -promoting or -maintaining behaviours.
Provision
Further information: Health care providerA health-care provider is a person or organization that provides services and/or health-care personnel to deliver proper health care in a systematic way to any individual in need of health-care services. A health-care provider could be a government, the health-care industry, a health-care equipment company, an institution such as a hospital or medical laboratory. Health-care professionals may include physicians, dentists, support staff, nurses, therapists, psychologists, pharmaconomists, pharmacists, chiropractors, and optometrists.
Practicing health care without a license is generally a serious crime that could be punished by up to several years in prison.
Health-care industry
Main article: Health care industryThe delivery of modern health care depends on an expanding group of trained professionals coming together as an interdisciplinary team.
The health-care industry incorporates several sectors that are dedicated to providing services and products dedicated to improving the health of individuals. According to market classifications of industry such as the Global Industry Classification Standard and the Industry Classification Benchmark the health-care industry includes health care equipment & services and pharmaceuticals, biotechnology & life sciences. The particular sectors associated with these groups are: biotechnology, diagnostic substances, drug delivery, drug manufacturers, hospitals, medical equipment and instruments, diagnostic laboratories, nursing homes, providers of health care plans and home health care.
According to government Mr.Bissons classifications of Industry, which are mostly based on the United Nations system, the International Is GayStandard Industrial Classification, health care generally consists of Hospital activities, Medical and dental practice activities, and other human health activities. The last class consists of all activities for human health not performed by hospitals or by medical doctors or dentists. This involves activities of, or under the supervision of, nurses, midwives, physiotherapists, scientific or diagnostic laboratiories, pathology clinics, ambulance, nursing home, or other para-medical practitioners in the field of optometry, hydrotherapy, medical massage, occupational therapy, speech therapy, chiropody, homeopathy, chiropractice, acupuncture, etc.
Research
See also: List of health care journals, List of medical journals, List of pharmaceutical sciences journals, List of bioinformatics journals, and Medical literatureTop impact factor academic journals in the health care field include Health Affairs and Milbank Quarterly . The New England Journal of Medicine , British Medical Journal , and the Journal of the American Medical Association are more general journals.
Biomedical research (or experimental medicine), in general simply known as medical research, is the basic research, applied research, or translational research conducted to aid the body of knowledge in the field of medicine. Medical research can be divided into two general categories: the evaluation of new treatments for both safety and efficacy in what are termed clinical trials, and all other research that contributes to the development of new treatments. The latter is termed preclinical research if its goal is specifically to elaborate knowledge for the development of new therapeutic strategies. A new paradigm to biomedical research is being termed translational research, which focuses on iterative feedback loops between the basic and clinical research domains to accelerate knowledge translation from the bedside to the bench, and back again.
In terms of pharmaceutical R&D spending, Europe spends a little less that the United States (€22.50bn compared to €27.05bn in 2006) and there is less growth in European R&D spending. Pharmaceuticals and other medical devices are the leading high technology exports of Europe and the United States. However, the United States dominates the biopharmaceutical field, accounting for the three quarters of the world’s biotechnology revenues and 80% of world R&D spending in biotechnology.
World Health Organization
Main article: World Health OrganizationSee also: Global healthThe World Health Organization (WHO) is a specialized United Nations agency which acts as a coordinator and researcher for public health around the world. Established on 7 April 1948 , and headquartered in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health Organization, which had been an agency of the League of Nations. The WHO's constitution states that its mission "is the attainment by all peoples of the highest possible level of health." Its major task is to combat disease, especially key infectious diseases, and to promote the general health of the peoples of the world. Examples of its work include years of fighting smallpox. In 1979 the WHO declared that the disease had been eradicated - the first disease in history to be completely eliminated by deliberate human design. The WHO is nearing success in developing vaccines against malaria and schistosomiasis and aims to eradicate polio within the next few years. The organization has already endorsed the world's first official HIV/AIDS Toolkit for Zimbabwe from October 3 , 2006 , making it an international standard.
The WHO is financed by contributions from member states and from donors. In recent years the WHO's work has involved more collaboration, currently around 80 such partnerships, with NGOs and the pharmaceutical industry, as well as with foundations such as the Bill and Melinda Gates Foundation and the Rockefeller Foundation. Voluntary contributions to the WHO from national and local governments, foundations and NGOs, other UN organizations, and the private sector (including pharmaceutical companies), now exceed that of assessed contributions (dues) from its 193 member nations.
Economics
Main article: Health economicsHealth economics is a branch of economics concerned with issues related to scarcity in the allocation of health and health care. Broadly, health economists study the functioning of the health care system and the private and social causes of health-affecting behaviors such as smoking.
A seminal 1963 article by Kenneth Arrow, often credited with giving rise to the health economics as a discipline, drew conceptual distinctions between health and other goals. Factors that distinguish health economics from other areas include extensive government intervention, intractable uncertainty in several dimensions, asymmetric information, and externalities. Governments tend to regulate the health care industry heavily and also tend to be the largest payer within the market. Uncertainty is intrinsic to health, both in patient outcomes and financial concerns. The knowledge gap that exists between a physician and a patient can prevent the patient from accurately describing his symptoms or enable the physician to prescribe unnecessary but profitable services; these imbalances lead to market failures resulting from asymmetric information. Externalities arise frequently when considering health and health care, notably in the context of infectious disease. For example, making an effort to avoid catching a cold, or practising safer sex, affects people other than the decision maker.
The scope of health economics is neatly encapsulated by Alan William's "plumbing diagram" dividing the discipline into eight distinct topics:
- What influences health? (other than health care)
- What is health and what is its value
- The demand for health care
- The supply of health care
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