Hi DPC
Your actual statement was " Cancer was HARDLY present and non detectable in the past. When we look back to the times of ancient Egypt - no cancer. Ancient Greece or Rome - no cancer."
Unfortunately that is not the case. Cancer was known in those times and referred to in various written articles. They certainly would not have known all the range of cancers that we can detect today, but that does not say those cancer didn't exist.
Life expectancy - I'm sorry, but I'm afraid that I disagree regarding the increase in life expectancy over time. Average life expectancy in neolithic and paleolithic times has to be estimated and there are methods of doing this. Further information on this can be obtained from Caspari, Rachel & Lee, Sang-Hee (July 27, 2004). "Older age becomes common late in human evolution". Proceedings of the National Academy of Sciences 101 (20): 10895–10900 and the references therein.
In more modern times records have been kept and there has been a lot of analysis of parish registers of births and deaths in the pre industrial period. If you want the references I can get them but it will take sometime as I am not going into a major library for some few weeks.
For modern times good records exist as governments around the world have collected such figures. I would recommend the following article: Kinsella Kevin G., (1992), Changes in Life Expectancy 1900 - 1990, American Journal of Clinical Nutrition 55, 1196S-1202S For Australia the average life expectancy at birth for males in 1900 was 53.2 years and for females 56.8 years. In 1990 it had risen to 73.5 and 79.8 respectively. Australian Bureau of Sattistics indicate that in 2007 this had risen to 79 and 84: http://www.abs.gov.au/. Perhaps your Youtube reference got 2000, not 1900 as the base for the two year increase.
If you want data on cancer statistics then I would recommend http://vcrdata.cancervic.org.au:8082/ccv/ It is data from the Victorian Cancer Registry. The Australian Institute of Health and Welfare publishes data for Australia, but it is not as easily accessible and there is no reason to believe that Victoria is significantly different from other states.
Regards
Sailor
Exhortation to Apprentices in the Art of Navigation:
“When so ever any Shipmaster or mariner shall set forth from land out of any river or haven, diligently to mark what buildings, castles, towers, churches, hills, downes, windmills and other marks are standing upon the land…..all of which, or many of them, let him portray with his pen, how they bear and how far distant. A. Ashley, 1583
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