Life Expectancy Law and Legal Definition

Life expectancy is a statistic measuring the age a person is expected to live until based on age, race, and gender. Life expectancy is commonly used by actuaries to calculate insurance premiums. Average life span and live expectancy in the United States have grown dramatically in this century, from about 47 years in 1900 to about 75 years in 1990. This advance is due largely to improvements in sanitation, the discovery of antibiotics, and medical care.

The down side of increased longevity is increased risk of certain diseases and disorders. As significant number of older people suffer from arthritis and hypertension. The leading cause of death among seniors is heart disease, cancer and stroke. Life expectancy varies by wealth, gender and ethnicity. The rich, for example, with better access to food and healthcare, live longer than the poor. In aggregate, life expectancy is a reflection of living conditions in a particular country.