fat and early humans

fat and early humans - Evolution of Humans and the Human...

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Evolution of Humans and the Human Brain Importance of Body Fat and arachidonic and docosahexaenoic (DHA) acids Updated: August 30, 2009 Joseph L. Dixon Rutgers University Based on a recent book by: Stephen C. Cunnane Survival of the Fattest World Scientific Pub Co., NJ 8/09 1
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This lecture is for the purpose of introducing the concept that modern humans and their physical makeup and dietary needs are the result of their development and evolution over the last 5 million years. Of especial importance is the fact that humans have more body fat than other land mammals. One explanation for this is that fat is important for the development of the human brain, and humans, especially women, need to have a store of fat available for brain development. 8/09 2
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Millions of Years A.afarensis A.afarensis H.rudolfenis H. habilis H. erectus H. heidelbergensis H.neanderthal H.sapiens Phylogenetic Tree of Human Origins A- Australopithecus H- Homo 4 3.5 3 2.5 2 1.5 1 0.5 0 First Human?? Bipedality Ardipithecus ramidus 4.4 million years 1.5M - Had Modern Human Feet 8/09 3
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8/09 4
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H. heidelbergensis 4 3.5 3 2.5 2 1.5 1 0.5 0 Millions of Years A.afarensis A.afarensis H.rudolfenis H. habilis H. erectus H.neanderthal H.sapiens Phylogenetic Tree of Human Origins A- Australopithecus H- Homo *Nature 2007 **Nature 2008 ***Sci 2009 Traveled Social & Fire Made it to China Overlap* Made It to Spain** 1.5M - Had Modern Human Feet*** 8/09 5
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1 0.5 0 Millions of Years H. sapiens H. neanderthal H. heidelbergensis Social & Fire Modern Humans 8/09 6
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H. sapiens H. neanderthal 200K 150K 100K 50K 0 Years Better tools, Cold Adapted, Heavier Cave paintings, “Venus of Willendorf” Modern Speech 10,000 yr ago First Agriculture 3,500 yr ago Horses domesticated 8/09 7
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This note was uploaded on 09/02/2009 for the course 709 255 taught by Professor Byrd-bredbenne during the Fall '08 term at Rutgers.

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fat and early humans - Evolution of Humans and the Human...

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