Re: Early farmers malnourished?

on Mon, 5 Dec 2005 22:28:53 -0600, deowll <deowll@xxxxxxxxxxxxx> sez:

` <johnwl4@xxxxxxx> wrote in message
` news:1133627943.368172.84140@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
` > "Deowll Malnourished doesn't always mean lack of calories. The diet
` > was often poor.
` > How is often known. The condition was often chronic for most or even
` > all of
` > the people. In some cases an elite few doesn't show malnourishment.
` > Sanitation was worse in villages because people built up more
` > pollution.
` > Chronic diseases were apparently more commo"
` >
` > Yes, an a good many diseases were mutated from ones that afflicted
` > domestic stock. Also, of course, plants may not give a balanced diet
` > - people eating 15 pounds of potatoes a day, trying to get enough
` > protein - including the essential amino acids.
` > That said, a person who starves to death can certainly be said to
` > be malnourished. HG people either had something to eat, that was
` > reasonably balanced, or they died, so, of course, any skeletons
` > wouldn't show evidence of malnutrition, not to mention the fact that
` > there are going to be fewer skeletons. Farmers can survive long
` > enough to be malnourished.
` > I mentioned this before. Are there any studies which show the
` > genetic reason why humans cannot make the essential amino acids.
` > IIRC, Gorillas can make them - Can Chimpanzees?


` I don't know. I do know enough to conclude that some people can live
` well on diets that would kill others which makes it hard to know what
` is a balanced diet.

AIUI, this is about how habituation affects the expression of enzymes. The
more of a food you eat, the more of the enzymes necessary to break it down
you produce. People who habitually eat lots of beans metabolize them all
before bacteria can get to them and generate methane. Alcoholics have
enough of the necessary enzyme to metabolize not just alcohol, but
other related molecule forms, to survive ingestions of substances
which would kill people with a normal diet. There are probably dozens
of these relationships, most unknown.


` > Incidentally, Jois, there is some material in Jobling, et. al.
` > about the domestication of plants - goes for the Karadadag region of
` > domestication for wheat ( yeah, I peeked at the back of the book to see
` > if the butler did it - this book is never going to make the best seller
` > list for light reading.) Quite a bit on lactose intolerance -
` > interesting that the genetic change that allows herding people to
` > digest lactose is in an intron far away from the lactase gene.
` > Example of something Evelyn Keller talked about in _The Century of the
` > Gene_ that the expression of genes is quite complicated.
` > REgards
` > John GW
` >



--
==========================================================================
vincent@triumf[munge].ca Pete Vincent
Disclaimer: all I know I learned from reading Usenet.
.

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