Paleo Diet and Paleolithic Diet Questions & Answers

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I saw that we have an ongoing thread for Paleo quotes so I thought it'd be cool to have a place to put new Paleo articles that come out. Especially easy to digest ones such as this Reuters article.

Reuters: Cancer Cells Slurp Fructose. (Fruit would have only been seasonal to hunter-gatherers so they naturally would have had a limited fructose intake).

http://www.reuters.com/article/idAFN0210830520100802

flag	asked Aug 3 2010 at 21:12 Ryan 1,336●9●18

	What was that Taubes quote? Maybe it's all just fructose ... – Paul Aug 3 2010 at 21:20
	Lustig (aka the fructose-is-evil doc) has hinted that he is working with Taubes on something, possibly a book. You know what that book will be about... – John R Sep 3 2010 at 12:19

Erik Cisler · Answer 1 · 2010-08-03 23:06:49Z UTC

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Fruit certainly isn't seasonal in the tropics.

answered Aug 3 2010 at 23:06

Erik Cisler
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This is as bad a dogmatic belief as saturated fat is bad for you. Most fruit is seasonal in the tropics. Fruit comes from flowers, flowers come from rested branches after a period of stress, such as the dry season in the tropics. Typically, the tree grows during the rainy season...hence most fruits ripen at the end of the dry season or the beginning of the rainy season. There are a few fruit bearing plants that do grow continuously and thus can be manipulated to having a longer period of fruit production (limit stress) such as banana, papaya and coconut (all single-branched plants!)..... – RLR Aug 20 2010 at 17:17

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....it may or may not be possible to grow bananas, coconut, papaya all year long (with manipulation), that I don't really know. What I do know is that ALL the trees ( I live in a tropical region) in my back yard, or around the neighborhood that just grow naturally by themselves with no human interaction, and we are talking orange, lemon, carambola, cas, mango, and even papaya and banana plants, I've never seen fruit on the trees for even half of the year. And they pretty much all put out fruit at around the same time.. evolutionary terms, no way man evolved with fruit available 365 – RLR Aug 20 2010 at 17:25

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Adding to the first part of this and just to clarify, trees do not grow branches and produce flowers at the same time. That is why the stress period is so essential for fruit production. The stress is needed to stop growth, the tree 'rests' and then flower production begins....then fruit....and oddly enough the temp is so constant in most tropical areas that often the stress isn't enough even with dry season that you often have much more growth than than fruit production. – RLR Aug 20 2010 at 17:35

Ryan · Answer 2 · 2010-08-20 08:10:04Z UTC

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Here's another one. Standing during the day reduces early awakening. It is theorized that we evolved to optimally live by spending much of our time on our feet everyday.

http://escholarship.org/uc/item/5bv8c7p3#page-1

answered Aug 20 2010 at 8:10

Ryan
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Matt · Answer 3 · 2010-09-03 11:32:51Z UTC

You should be as skeptical (if not more so) of science that agrees with your own prejudices as ones that disagree.

That study Reuters: Cancer Cells Slurp Fructose dose not really indicate anything at this stage. Its just a bunch of cancer cells grown in a dish being fed different pure sugars.

I think that if someone produced a similar study showing that saturated fat is bad because it poisoned some pancreas cells grown in a petri dish it would not be looked kindly on here.

Try this for a more reasoned view of what the study actually showed: Fructose and pancreatic cancer

As I mentioned before, there very well may be legitimate, science-based reasons to be worried about fructose and high fructose corn syrup. Steve Novella recently wrote a good review of the topic in which he wanted to point out that glucose and fructose are sugars, as is the main component of high fructose corn syrup. It's a high calorie, highly processed substance that has no other nutritional value other than as pure fuel. What Heaney's study doesn't really answer is just how different from the case in normal pancreatic cells is fructose metabolism in pancreatic cells or if it's even different? In the current study, HPDE6 cells, which are a cell line derived from normal pancreas cells, behaved the same as all the pancreatic cancer cell lines. Fructose supported its growth and was used primarily for ribose and nucleic acid synthesis.

There's a lot of hard work that needs to be done to validate the cell culture findings reported by Heaney's group, not the least of which is testing it in animal models. It's far too early to make any sort of recommendations about high fructose corn syrup and diet based on this study, and Heaney should have known better. Next up, I can see an article on NaturalNews.com touting this study as "proof" that high fructose corn syrup is pure, concentrated evil and that food manufacturers are out to kill us all, and Heaney will have given Mike Adams some choice quotes to use for that article.

Ryan · Answer 4 · 2010-09-03 07:40:17Z UTC

Along the line of Lights Out: Sleep, Sugar and Survival....disruption in the quality and quantity of sleep can lead to mental illness and early death.

http://www.bloomberg.com/news/2010-08-31/sleep-deprivation-may-trigger-mental-problems-in-young-people-study-finds.html

typeogirl · Answer 5 · 2011-06-23 17:38:41Z UTC

Here is an article, I hope it belongs here in the right place (if it's not I apologize). It is in the Washington Post, "Potatoes Bad, Nuts Good". http://www.washingtonpost.com/national/health-science/potatoes-bad-nuts-good-for-staying-slim-harvard-study-finds/2011/06/17/AGRWmIgH_story.html?fb_ref=NetworkNews

Seems to support Paleo eating...

New Paleo Articles

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