Health (or health care) is the treatment and prevention of illness. Health care is delivered by professionals in medicine, dentistry, nursing, pharmacy and allied health.
The social and political issues surrounding access to health care in the US have led to vigorous public debate and the almost colloquial use of terms such as health care (medical management of illness), health insurance (reimbursement of health care costs), and public health (the collective state and range of health in a population).