Health care encompasses the prevention, diagnosis, treatment, and management of diseases, illnesses, injuries, and other physical and mental impairments. It's delivered by a wide range of health professionals across various fields like medicine, dentistry, nursing, and therapy. Health care includes primary, secondary, tertiary, and public health services, covering a broad spectrum of medical and wellness practices.
Since 1970, the average life expectancy across OECD countries had a gain of 10 years.
In 1980, the WHO declared the worldwide eradication of smallpox, marking it as the first disease in human history to be eliminated through deliberate health care interventions.
In 2011, the health care industry across the 34 members of OECD countries consumed an average of 9.3 percent of the GDP or US$ 3,322 (PPP-adjusted) per capita. The US spent 17.7% (US$ PPP 8,508).
In 2013, the National Health Interview Survey in the United States revealed that skin disorders (42.7%), osteoarthritis and joint disorders (33.6%), back problems (23.9%), disorders of lipid metabolism (22.4%), and upper respiratory tract disease (22.1%, excluding asthma) were the most common reasons for people seeking physician care.
In 2020, the healthcare industry in the United States accounted for 18% of the country's gross domestic product.
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