Starch 'fuel of human evolution'


	Starch 'fuel of human evolution'

Caleythia

9-10-2007 10:15 AM

483 views

tags:

evolution, science

Caleythia says:

Take that, Dr. Atkins.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/7a20c8c5-3ea8-497f-aadf-f71ad21af889/379A4EA7-4FC6-4FFF-8EBD-C509AB6BAF58/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.bbc.co.uk/2/hi/health/6983330.stm" href="http://news.bbc.co.uk/2/hi/health/6983330.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/health/6983330.stm"><FONT size="2"><B>Man's ability to digest starchy foods like the potato may explain our success on the planet, genetic work suggests. </B>
</FONT><P>
<FONT size="2">Compared with primates, humans have many more copies of a gene essential for breaking down calorie-rich starches, Nature Genetics reports.</FONT></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/health/6983330.stm"><FONT size="2">And these extra calories may have been crucial for feeding the larger brains of humans, speculate the University of California Santa Cruz authors. 
</FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/health/6983330.stm"><FONT size="2">They discovered humans carry extra copies of a gene, called AMY1, which is essential for making the salivary enzyme amylase that digests starch.
</FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/health/6983330.stm"><FONT size="2">And marginal food resources can become part of the staple diet. 
</FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/health/6983330.stm"><FONT size="2">"Now you can have population growth and expand into new territories." 
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