Australians enjoy the advantages of a modified welfare state and compare favourably with the rest of the world in terms of nutrition, living and working conditions, and general rates of life expectancy. Cardiovascular disease and cancers account for most deaths, but accidents, particularly road accidents, represent the largest single category of health hazards during the first half of life. Improvements in health care led to a rise of more than 50 percent in average life expectancy during the 20th century.
Health care provision is managed by the states and territories, though broad national policies are framed by the federal government through the Department of Health and Aging. The national government also influences health service standards through its financial arrangements with the states and territories, through grants and benefits to individuals and organizations, and by regulating health insurance. Health care is also delivered by local governments, semi voluntary agencies, and private enterprises. Public and private hospitals provide good-quality care and support medical research that has established an excellent international reputation. Private health insurance covers about one-third of Australians.