14 Facts About Life expectancy


Mathematically, life expectancy is the mean number of years of life remaining at a given age.

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Life expectancy is used in plant or animal ecology, and in life tables .

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Life expectancy was under 25 years in the early Colony of Virginia, and in seventeenth-century New England, about 40 percent died before reaching adulthood.

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However, a study by Jose A Tapia Granados and Ana Diez Roux at the University of Michigan found that life expectancy actually increased during the Great Depression, and during recessions and depressions in general.

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Life expectancy is likely to be affected by exposure to high levels of highway air pollution or industrial air pollution.

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Some argue that shorter male life expectancy is merely another manifestation of the general rule, seen in all mammal species, that larger-sized individuals within a species tend, on average, to have shorter lives.

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Period life expectancy remains a commonly used statistic to summarize the current health status of a population.

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Factors that are associated with variations in life expectancy include family history, marital status, economic status, physique, exercise, diet, drug use including smoking and alcohol consumption, disposition, education, environment, sleep, climate, and health care.

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Future trends in life expectancy have huge implications for old-age support programs like U S Social Security and pension since the cash flow in these systems depends on the number of recipients who are still living .

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Life expectancy forecasting is usually based on two different approaches:.

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Life expectancy is one of the factors in measuring the Human Development Index of each nation along with adult literacy, education, and standard of living.

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Life expectancy is used in describing the physical quality of life of an area or, for an individual when the value of a life settlement is determined a life insurance policy is sold for a cash asset.

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Disparities in life expectancy are often cited as demonstrating the need for better medical care or increased social support.

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Life expectancy is commonly confused with the average age an adult could expect to live.

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