Archive for the ‘Aging’ Category

The first 200 year old human has already been born

December 27, 2012

The journalist Henrik Lennart has a new book out  in Swedish – “Åldrandets gåta” (The Mystery of Aging), where he interviews the worlds leading researchers and demographers about aging. Our descendants will have to learn to have many careers within their lifetimes.

Science has long envisaged a limit to how long a person can live – around 120 years. But now research is catching up with our fantasies. Henrik Lennart interviews the world’s leading researchers specializing in aging. They all come to the same conclusion: We, and especially our children, will live far longer than is common today.

Why? Improved standards of living come into play but also our lifestyles. Advice from the experts can differ: eat fewer calories, stand up when you are working, fast or cut down on meat and sugar. These choices certainly affect the aging of cells, and when researchers finally find the genes that control lifespan and have learned how to control them, the question will become:

How old would we like to be?

Aftonbladet reports:

Some researchers believe that the first human who will live to be 200 years old is already living.

“According to our calculation, half of the children born in Sweden in 2012 will live to be 104 years old”, says demographer James Vaupel.  Life expectancy has increased steadily over the past hundred years. ….. Today, the average life expectancy in Sweden is 83 years for women and 79 for men.

In a new book “The Mystery of Aging” journalist Henrik Lennart has  interviewed demographers and scientists who believe that statisticians world-wide have systematically underestimated the rate of increase of life expectancy and that this has been going on for a very long time.

Statisticians have not fully considered the influence of welfare reforms, better living conditions and more efficient healthcare. To get a more accurate picture one of the world’s best-known demographers James Vaupel, along with a group of prestigious scientists have made new calculations where they have added a factor to reflect the impact of as yet unknown developments – not dramatic but which can be expected in the future.

Their calculations show that half of all the children born in Sweden this year will live to be 104 years old. “In the future, we could live to be ten times older. Why not? It will take time to get there but it is certainly not impossible. In my opinion it is quite likely that there is a rather small child already born somewhere who will live to be more than 200 years old”, says James Vaupel who is interviewed in “The Mystery of Aging.”

Svenska Dagbladet adds:

James Vaupel and Cambridge researcher Jim Oeppen have previously shown that the curve of women’s life expectancy in the Western world has increased at an even and steady pace of three months per year for 160 years. Swedish statistics extend further back than in most other countries, and this increase has been by an average of 2.5 months per year since 1751.

Previously, scientists believed that there was a ceiling for the average life expectancy of  a little over 80 years. Today this ceiling has shifted up at least a decade, and continues to rise.

“We no longer know if there is any ceiling and where it lies if it does exist”, says James Vaupel.

At this rate everybody will be living to around 200 years by 2500.

By 2100 a world population decline and a shortage of a “productive population” will be the problem

November 3, 2012

There are still alarmists and Malthusians who believe that the world will face catastrophe due to overpopulation. They believe that the carrying capacity of the earth has been exceeded, that there will be food shortages, energy shortages and resource shortages in every field; that – in short – the population will not be able to sustain itself let alone to maintain growth.

But like so many alarmist theories (be it global warming or peak oil or peak gas or GM crops) the overpopulation meme builds on beliefs and ignores evidence. The environmentalists are increasingly taking faith-based and anti-science positions. Alarmism invokes political correctness and “consensus beliefs” rather than evidence to silence criticism . Even hard-core environmentalists are beginning to question this myopic adhesion to ideology (Environment360).

Just taking the overpopulation myth as an example, the data and projections in the United Nations, Department of Economic and Social Affairs, Population Division (2011): World Population Prospects: The 2010 Revision. New York (Updated: 15 April 2011) are pretty unambiguous and revealing. Within 100 years world population will be declining. The majority of children being born today in the developed world will live to be over 100 years old. There will begin to be a shortage of  the required “productive population” relative to the “supported populations of the young and the retired” – a problem already evident in Japan and other developed countries. In Sweden (and some other European countries) for example, this proportion is being maintained only by means of immigration and the slight consequent increase in average fertility rates. The “productive population” in Germany would be below the required level were it not for the “guest workers”. The 11 million or so “illegal immigrants” who are nearly all part of the “productive population” in the US  are a vital part of maintaining this balance.

The challenge in 2100 will be to maintain the balance between those “producing” to those “supported” in a declining and aging population. Perhaps immigration or population migrations or  productivity increases by the use of robots and an increase in the age one joins the “supported” population will be parts of the solution. I have no doubt that solutions will be found, but the “overpopulation problem” would have left the stage.

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