Maximum Average Life Span

Let us consider whether there might be an upper limit to the average life span that could be achieved by a large human population. Average life span, or life expectancy at birth, refers to how long people live on average in a population. In the United States, life expectancy is currently around 75 years for men and 80 years for women (34). Accordingly, these numbers describe the average length of life that can be anticipated, given the mortality conditions of today. For example, baby boys born this year will live an average of 74 years, assuming that age-specific death rates (Fig. 4a) do not change in the future. Just as occurs today, some of these newborns will die in infancy from congenital ailments, some will be killed in car accidents as young adults, and some will succumb in old age to cancer or heart disease.

TABLE 4 Average Change (in Years Per Decade) in Key Mortality Indicators, Sweden
Your Heart and Nutrition

Your Heart and Nutrition

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