Health care
Health care or healthcare is the maintenance or improvement of health via the prevention , diagnosis , and treatment of disease , illness, injury, and other physical and mental impairments in human beings. Healthcare is delivered by health professionals (providers or practitioners) in allied health fields . Physicians and physician associates are a part of these health professionals. Dentistry , midwifery , nursing , medicine , optometry , audiology , pharmacy , psychology , and other health professions are all part of healthcare. It includes work done in providing primary care , secondary care , and tertiary care , as well as in public health . Access to health care may vary across countries, communities, and individuals, largely influenced by social and economic conditions as well as the health policies in place. Countries and jurisdictions have different policies and plans in relation to the personal and population-based health care goals within t