10 - Nutri Sci Notes 9/10 2008-09-14 How food has evolved?...

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Nutri Sci Notes 9/10 22:31 How food has evolved? Food security in preindustrial societies Quantity of food available o Plentiful 38% o Adequate 46% o Subsistence 12% o Minimal 4% from the groups looked at most groups have a good amount of food.  Frequency of food shortage o Annual 24% o Rare 29% o Occasional 24% o Frequent 24% Never is not a category, pretty much everyone could deal with shortage Extent of food shortage o Mild 36% o Moderate 34% o Sever 29% Time spent on food production o Austrailain hunter gathers (hours/day) 2.1, 3.8, 5.1 o Amazonian farmers (hours/day) 3.5, 2.8, 2.0 o mean of 3.2
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Availability Diet composition has changed FAT AGRIC. 10-15% US 20-25% STARCH AGRIC. 60-75% US 20-25% REFINED SUGAR AGRIC 5% US 18-27% FIBER AGRIC 60-120% US 10-18% Ancient times=starch based diet
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This note was uploaded on 04/07/2009 for the course BIO 10167 taught by Professor Anderson,peterj. during the Fall '08 term at Wisconsin.

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10 - Nutri Sci Notes 9/10 2008-09-14 How food has evolved?...

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