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Old 08-13-2008, 07:51 AM   #1
Craig Adams
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Default Carb choices for Zoner thinking Paleo

As a Zoner who has also followed the good food / bad food list in the CF journal I try to steer clear of potatoes, sweet potatoes or any starchy veg. You know, the whole insulin / glycemic index thing.

As I start to learn about Paleo, I see that it says tubers are good stuff. Even though part of the modern justification for following the Paleolithic prescription seems to be control of insulin. I have also seen posts by some zone/paleo CFers that rate starchy veg as being better for you than grains. But Dr. Sears and the glycemic index beg to differ when it comes to whole oats and barley.

Specifically, what is with:
1. The conflict between Paleo recommending tubers vs. the Zone as well as CF publications listing tubers as a "bad" choice; arenít both Zone and Paleo just trying to control insulin when it comes to carbs?

2. And the specific merit of eating potatoes, sweet taters, umm...carrots, etc. with respect to the hormonally induced effect on fat they have...i.e. their effect on insulin. I mean, I just checked, a sweet potato has a glycemic load very similar to corn, and I'm pretty sure a Zoner nor a Paleo would eat corn. Beans are another source of similar confusion, they control insulin better than yams, but Robb seems to advocate eating yams but not beans.

In the same way that there is nothing magic about the specific ratios in the Zone, can't we say there isnít anything magic about not eating a grain (corn) or a legume on Paleo. What it comes down to is its effect on insulin right? Combining Zone and Paleo:
Sweet potatoes/yams, Yes Paleo, No Zone Ė
Kidney beans, No Paleo, Yes Zone Ė
Corn, No Paleo, No Zone...They all effect insulin very similarly, so what gives? Frackin confusing.

Sorry for the long rant in my first post here.

CA
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Old 08-13-2008, 09:05 AM   #2
Scott Borre
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There's more to food than just what effect it has in insulin. Such as nutritional content.
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Old 08-15-2008, 06:05 AM   #3
Darryl Shaw
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Ignoring for a moment arguments about the relative nutrient density/calorie density of tubers vs grains and how they might affect insulin levels there is a growing body of evidence to support the hypothesis of Richard Wrangham that it was the consumption of cooked tubers that lead to the increase in brain size and development that created modern humans and not our hunting ability. Therefore as we've probably been eating roast tubers for close to 2 million years our bodies have had plenty of time to adapt to them unlike grains which we've only been eating on a regular basis for around 10,000 years.

Did Cooked Tubers Spur the Evolution of Big Brains?

Digging Chimps Provide Insights Into Early Human Diet.

As far as I'm concerned roots, shoots and tubers are ideal foods for people who are concerned with weight/insulin control as they tend to be extremely nutritious while having relatively low calorie densities compared with grains and due to their high water and celulose content they're very filling which makes it far less likely that you'll overeat.
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Old 08-15-2008, 08:01 AM   #4
Craig Adams
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Hey, thanks for the thoughtful response Darryl. Great article.

Please give me an example of what is meant by roots, shoots and tubers. I thought tubers were just edible roots. And shoots...hmm, like bamboo shoots, would that include water chestnuts too...hmm. I'm thinking of ways to incorporate roots, shoots and tubers into my PWO diet, but all I'mm coming up with is sweet potatoes and yams.

CA
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Old 08-15-2008, 08:37 AM   #5
Frank Needham
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This looks like a good resources for tubers:
http://www.uga.edu/rootandtubercrops...h/photographs/
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Old 08-16-2008, 04:41 AM   #6
Darryl Shaw
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Quote:
Originally Posted by Craig Adams View Post
Please give me an example of what is meant by roots, shoots and tubers. I thought tubers were just edible roots. And shoots...hmm, like bamboo shoots, would that include water chestnuts too...hmm. I'm thinking of ways to incorporate roots, shoots and tubers into my PWO diet, but all I'mm coming up with is sweet potatoes and yams.

CA
I have no idea what distinguishes a root from a tuber but luckily some smart people have done all the research for me.

http://www.montessorimaterials.org/S...lbmaterial.pdf

http://en.wikipedia.org/wiki/Root_vegetables
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Old 08-16-2008, 12:27 PM   #7
Craig Adams
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Darryl, you are a champion. It is easy to respect a guy who posts helpful information, even if...especially if it is not always from personal knowledge. You could have said, check the internet, but you learned a little and posted helpful info ta boot. Above and beyond the call of duty. Thx.

And Frank, awesome link.

Sweet potoato is a tuberous root, which is different from a tuber, which is a potato and a yam. Incidentally, the orange flesh yams we can buy in american grocery stores sold next to the sweet potatoes are really all sweet potatoes, just different varieties. A true yam is much larger and much more fiberous.

Hmm, I hadn't thought about garlic as a root or tuber...but there ya go, it's a bulb. Surprisingly high in carbs if you use a lot like I do. I make a dip for parties that is about 50 or 60 garlic cloves roasted in the oven and smashed up with olive oil and a little goat cheese.

Anyway, thanks.

CA
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Old 08-18-2008, 06:15 AM   #8
Darryl Shaw
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Craig, if you want to try some of the more unusual roots and tubers available try looking in your local Chinese and African stores.
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Old 08-18-2008, 01:57 PM   #9
sarena kopciel
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here are a couple of those roots and tubers in an Asian market
http://www2.snapfish.com/slideshow/A...44/t_=27687640
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Old 08-19-2008, 06:08 AM   #10
Darryl Shaw
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While we're on the subject of roots and tubers it seems that yams are one of Usain Bolt's favourite foods.

Quote:
KINGSTON, Jamaica (Reuters) - Usain Bolt streaked to 100 metres Olympic gold at the Beijing Olympics on Saturday thanks to yam power, his father said.

Wellesley Bolt said his son was partial to the vegetable grown in the north-western area of Jamaica where the sprinter was born.

"It is definitely the Trelawny yam," Bolt senior told Reuters seconds after his son smashed the world record on the way to landing the biggest gold medal in sport.
http://africa.reuters.com/sport/news/usnBAN656276.html

Trelawny Yam Festival - All About Yams.
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