Genus volume 75 , Article number: 11 Cite this article. Metrics details. Significant reductions in mortality are reflected in strong increases in life expectancy particularly in industrialized countries. Previous analyses relate these improvements primarily to medical innovations and advances in health-related behaviors. Mostly ignored, however, is the question to what extent the gains in life expectancy are related to structural changes in the populations due to increasing education levels.
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Longevity has been increasing over the past century thanks to medical advances and lifestyle improvements. Not only has the average life expectancy increased since , but a larger number of people are living to older ages, driven in part by a steep decline in the high infant mortality rate that characterized the early s. Life expectancy once a person reaches age 65 is now about to 84 years of age in the United States and about 86 in Japan. Life expectancy in Australia, Canada and the United Kingdom fall between 84 and 86 for people at age 65, according to statistics from the Organisation for Economic Co-Operation and Development. The pair then introduced a new longevity tool , designed to help consumers and advisors estimate how long of a retirement they may need to plan for. Life expectancy likely will continue to increase but at a slower rate in the future, including at older ages, they said. Hall and Peterson outlined several factors, based on data from the Institute and Faculty of Actuaries, associated with mortality that affect whether a person is likely to live to or beyond the average life expectancy.
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By Debora Mackenzie. When countries develop economically, people live longer lives. Development experts have long believed this is because having more money expands lifespan, but a massive new study suggests that education may play a bigger role. The finding has huge implications for public health spending.
Overpopulation is an undesirable condition where the number of the existing human population exceeds the actual carrying capacity of Earth. Overpopulation is caused by a number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which result in overpopulation. It is possible for a sparsely populated area to become densely populated if it is not able to sustain life.