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#51
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How did nature make human body so vulnerable to carbohydrate?
In article ,
Pat Paris wrote: On Mon, 24 Nov 2003 09:12:38 +1300, Miche wrote: I was just responding to the idea that seems to be going round the group that before agriculture people basically didn't eat carbohydrates. I've not seen anyone say that. Jean B. said she thought "most of the calories" came from game and I believe she is correct. they did, but not as 60-70% of the diet as people do after the "low-fat revolution". What percent of their diet would you say was carbohydrate? Read "Guns, Germs and Steel" by Jared Diamond. The answers are in there. Miche -- If you want to end war and stuff you got to sing loud. -- Arlo Guthrie, "Alice's Restaurant" |
#52
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How did nature make human body so vulnerable to carbohydrate?
I read "Eat Right 4 Your Type" and found it unconvincing. He just does
not provide good evidence for his theory. And it is counter-intuitive. Blood type is 2-3 genes. It may be statistically correlated with the rest of your genotype but it you can have 99% hunter gatherer genes and 1% agrarian blood type, if there is such a thing. Tim Josling Jean B. wrote: Tim Josling wrote: Just one other thing... you are a unique individual. Use the different diets as a starting point but at the end of the day you are looking for something that works for you. Some people are adapted to carbs, just like some people are somewhat adapted to dairy food. [snip] This sounds possibly akin to eating according to blood type. |
#53
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Cites (was How did nature make human body so vulnerable tocarbohydrate?)
Miche wrote:
Now the Alawa of the Northern terriotories Australia traditionally (i.e. non-Agriculturally) use Oryza rufipogon which can be coooked and stored for years. http://sites.uws.edu.au/vip/listerp/tbot.htm (also on that page: Screw palm (Pandanus spiralis) seed. The kernel within the seed is edible but difficult to extract. It is apparently high in oils and carbohydrates and highly sought after by people in the Top End.) I saw a TV show where they demonstrated this. It took all day to make a small cake. And this was something that only happened once a year at 'harvest time'. The Australian Aboriginal diet was very low in carbs. They are not adapted to carbs, thus when confronted by modern junk food diet they have terrible rates of diabetes etc. Noone is saying hunter gatherer diets had no carbs. Noone is saying that agricultural peoples have not adapted at all. But I am saying hunter gatherer diets were low in carbs, high in fiber, low in calories, high in famines (in many cases), and relatively high in protein. Bone marrow provided considerable fat. Tim Josling |
#54
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Cites (was How did nature make human body so vulnerabletocarbohydrate?)
Tim Josling wrote:
Miche wrote: Now the Alawa of the Northern terriotories Australia traditionally (i.e. non-Agriculturally) use Oryza rufipogon which can be coooked and stored for years. http://sites.uws.edu.au/vip/listerp/tbot.htm (also on that page: Screw palm (Pandanus spiralis) seed. The kernel within the seed is edible but difficult to extract. It is apparently high in oils and carbohydrates and highly sought after by people in the Top End.) I saw a TV show where they demonstrated this. It took all day to make a small cake. And this was something that only happened once a year at 'harvest time'. The Australian Aboriginal diet was very low in carbs. They are not adapted to carbs, thus when confronted by modern junk food diet they have terrible rates of diabetes etc. Noone is saying hunter gatherer diets had no carbs. Noone is saying that agricultural peoples have not adapted at all. But I am saying hunter gatherer diets were low in carbs, high in fiber, low in calories, high in famines (in many cases), and relatively high in protein. Bone marrow provided considerable fat. Tim Josling I think we can all agree that these people did not eat the junky processed carbs that most people eat in abundance now. -- Jean B. |
#55
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Cites (was How did nature make human body so vulnerable to carbohydrate?)
Tim Josling wrote in message ...
Miche wrote: Now the Alawa of the Northern terriotories Australia traditionally (i.e. non-Agriculturally) use Oryza rufipogon which can be coooked and stored for years. http://sites.uws.edu.au/vip/listerp/tbot.htm (also on that page: Screw palm (Pandanus spiralis) seed. The kernel within the seed is edible but difficult to extract. It is apparently high in oils and carbohydrates and highly sought after by people in the Top End.) I saw a TV show where they demonstrated this. It took all day to make a small cake. And this was something that only happened once a year at 'harvest time'. The Australian Aboriginal diet was very low in carbs. They are not adapted to carbs, thus when confronted by modern junk food diet they have terrible rates of diabetes etc. Noone is saying hunter gatherer diets had no carbs. Noone is saying that agricultural peoples have not adapted at all. But I am saying hunter gatherer diets were low in carbs, high in fiber, low in calories, high in famines (in many cases), and relatively high in protein. Bone marrow provided considerable fat. Tim Josling I agree. The point is that the people didn't eat carbs that often. For instance, black berries grow wild in PA. I used to eat them all the time. Basically, there was maybe one month out of the year when they were available, and you had to find the darn things. So, sure, there were carby foods available, but they were sparse. |
#56
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How did nature make human body so vulnerable to carbohydrate?
"Miche" wrote in message ... In article , Pat Paris wrote: On Mon, 24 Nov 2003 09:12:38 +1300, Miche wrote: I was just responding to the idea that seems to be going round the group that before agriculture people basically didn't eat carbohydrates. I've not seen anyone say that. Jean B. said she thought "most of the calories" came from game and I believe she is correct. they did, but not as 60-70% of the diet as people do after the "low-fat revolution". What percent of their diet would you say was carbohydrate? Read "Guns, Germs and Steel" by Jared Diamond. The answers are in there. Which boil down to-- not much compared to modern standards. Yes, cromagnon gathered starch/sugar, and knew about wheat and rice early on, but they didn't cultivate it until at least 7000 to 8000 years ago (in Turkey). Animal husbandry-- actual ranching, collecting a herd, culling, penning close to habitation, those are much stronger evidence-wise and go back almost 30 thousand years. Before that, there is no evidence that cromagnon cultivated or nurtured his food sources at all. In any case, 7 or 8 thousand years is *not enough time for us to evolve adaptations to our food. Not by a long shot. Our attraction to starch and sugar are for the obvious reason-- a high energy source in an environment where such food wasn't always easy to come by. I second the recomendation to read "Guns, Germs and Steel". Fascinating stuff. revek --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.543 / Virus Database: 337 - Release Date: 11/21/2003 |
#57
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Cites (was How did nature make human body so vulnerable to carbohydrate?)
On Mon, 24 Nov 2003 14:08:58 +1300, Miche
wrote: For those wanting cites, here they a snip Thank you for the citations. I must note, however, that while these citations show the availability of wild rice and other carbohydrates (some of which "may" be classified as "high carb" but not in the modern sense), they do not present evidence on the amount of carbohydrates in Paleolithic diets. Here are some that do: http://tinyurl.com/wc7o From the American Journal of Clinical Nutrition, 2000 March;71(3):682-692, Plant-animal subsistence ratios and macronutrient energy estimations in worldwide hunter-gatherer diets by Cordain L, Miller JB, Eaton SB, Mann N, Holt SH, Speth JD. "Our analysis showed that whenever and wherever it was ecologically possible, hunter-gatherers consumed high amounts (45-65% of energy) of animal food. Most (73%) of the worldwide hunter-gatherer societies derived 50% ( or =56-65% of energy) of their subsistence from animal foods, whereas only 14% of these societies derived 50% ( or =56-65% of energy) of their subsistence from gathered plant foods. This high reliance on animal-based foods coupled with the relatively low carbohydrate content of wild plant foods produces universally characteristic macronutrient consumption ratios in which protein is elevated (19-35% of energy) at the expense of carbohydrates (22-40% of energy)." http://tinyurl.com/wcb0 There are 8 major cereal grains which are consumed by modern man (wheat, rye, barley, oats, corn, rice, sorghum, and millet) [Harlan 1992]. Each of these grains were derived from wild precursors whose original ranges were quite localized [Harlan 1992]. Wheat and barley were domesticated only ~10,000 years ago in the Near East; rice was domesticated approximately 7,000 years ago in China, India, and southeast Asia; corn was domesticated 7,000 years ago in Central and South America; millets were domesticated in Africa 5,000-6,000 years ago; sorghum was domesticated in East Africa 5,000-6,000 years ago; rye was domesticated ~5,000 years ago in southwest Asia; and oats were domesticated ~3,000 years ago in Europe. Consequently, the present-day edible grass seeds simply would have been unavailable to most of mankind until after their domestication because of their limited geographic distribution. Also, the wild version of these grains were much smaller than the domesticated versions and extremely difficult to harvest [Zohary 1969]. http://tinyurl.com/wc7y The Southern Greek Palaeolithic, Mesolithic, and Neolithic Sequence at Franchthi Inhabitants of the cave were probably seasonal hunter-gatherers. No certain gathering of plant foods is attested before ca. 11,000 b.c., although large numbers of seeds of the Boraginaceae family may come from plants gathered to furnish soft "bedding" or for the dye which their roots may have supplied. First appearing at ca. 11,000 b.c. are lentils, vetch, pistachios, and almonds. Then ca. 10,500 b.c. and still well within the Upper Paleolithic period appear a few very rare seeds of wild oats and wild barley. Neither wild oats nor wild barley become at all common until ca. 7000 b.c., after which they become a regular and typical feature of the Upper Mesolithic botanical assemblage. http://tinyurl.com/wc8p `First farmers' with no taste for grain The Neolithic period is traditionally associated with the beginning of farming, yet in Britain - by contrast with much of the rest of Europe - the evidence has always been thin on the ground. Where are the first farmers' settlements? Where are the fields? The almost complete absence of this kind of evidence has led some archaeologists, over recent years, to question the view that people in Britain actually grew most of their food in the 4th and 3rd millennia BC. Now, a scientific study of Neolithic human bone seems to point in the same revisionist direction. The small-scale study - the first of its kind - of the bones of about 23 Neolithic people from ten sites in central and southern England, suggests that these `first farmers' relied heavily on animal meat for food, or on animal by-products such as milk and cheese, and that plant foods in fact formed little importance in their diet. The bones date from throughout the Neolithic, c 4100BC - c 2000BC. Miche (bowing out of this thread now) Bye. |
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