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Messages - Warren Dew

Pages: 1 ... 382 383 [384]
5746
Diet and nutrition / Re: Confused
« on: August 01, 2008, 02:22:36 PM »
Agreed, but certainly not melons or mangoes.

Melons still grow wild in Africa, so I'd guess that they were indeed part of the diet of our paleolithic ancestors.  Mangos are native to southeast Asia, so according to current anthropological theories, they wouldn't have been part of our diet for as long, though they'd still have been eaten before the neolithic.

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So I guess then, everyone should consider for himself/herself what kind of foods to stick with, since no modern food is really paleolithic anymore. Not even meat, since you buy it and not hunt it yourself. Meaning e.g. that if I would like to eat cheese I can still call it paleo and if I am a ovo-lacto-vegetarian I still call it paleo.

Because of the way the paleolithic diet is defined, I do think it can involve more thought on the part of the users than some other diets.  For people who actually want to understand their diet, rather than just blindly follow a set of rules, though, I think that's a good thing, not a bad thing.

That said, the definition is pretty clear:  eat things like our ancestors ate in the paleolithic, not things they didn't start eating until the neolithic.  The reasoning is that the neolithic - the time since the paleolithic - is too short, on an evolutionary time scale, for us to have fully adapted to new foods.  This reasoning applies in reverse, too, though - foods that we ate during the paleolithic are unlikely to have had enough time in the neolithic to mutate into something dangerous to us (perhaps barring genetically engineered foods).

Foods that we didn't eat at all during the paleolithic and only started eating in the neolithic, like cheese and other dairy, though, simply cannot be considered paleolithic.  That doesn't mean one can't eat them; it just means that if one does eat them, one should do so with eyes open to the possibility that they'll raise issues that a paleo diet wouldn't.

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Nobody answered the GI question. I guess it doesn't matter because paleo people wouldn't worry about it, right?

I only just figured out that you probably meant "glycemic index" by GI.

I think you're correct that from the paleolithic diet perspective, glycemic index is not as important as it is in some other diets; there were both highly glycemic and nonglycemic foods in the paleolithic, so it would be a secondary consideration.

That said, I personally think that there are some problems with paying too much attention to the glycemic index - problems that the paleo diet avoids.  In particular, glycemic index is normalized to caloric intake; when you compare the glycemic index of bread and that of fruit, for example, you're comparing, say, 1000 kcal of bread to 1000 kcal of fruit.

The problem with this is that 1000 kcal of bread is actually a lot less food than 1000 kcal of fruit.  1000 kcal of bread is less than a pound; 1000 kcal of, say, cantaloupe is more than six pounds.  Even if they have similar glycemic indices, eating a given amount of bread is going to make for a much higher sugar spike than eating the same amount of cantaloupe, and the same would go for other fresh fruit.

Now, if someone already has diabetes, they'll probably still need to avoid fruit as well as bread.  If someone is healthy and just wants to avoid diabetes, though, bread is probably a lot worse than fruit.  That's even ignoring the other reasons to avoid grains, some of which we know about - like lectins we probably haven't adapted to - and some of which we may not know about yet.

5747
Diet and nutrition / Re: Confused
« on: July 31, 2008, 07:04:07 PM »
I think that you need to take into account what was
actually available to your ancestors in the region of
the world where they lived. I live in Northern Europe and I
would believe that my genetical predecessors lived in
a rather cold climate. That affects my dietary choices.

That would be good thinking for the neolithic (new stone age) period.  For the paleolithic (old stone age), though, neandertals were the primary humanoids in cold areas, and anthropologists now think that we have little or no neandertal blood.  The current thinking is that our own ancestors were still in Africa for most of the paleolithic.

Of course, the anthropologists could be wrong.  Forty years ago, they believed that we were descended from neandertals and cro-magnons were a dead end, the opposite of what they believe today.  Theories could still switch back.

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Nor do I think that a scarce food supply increases the urge
to have carbohydrates. When you are really hungry, don't
you feel the urge for something fatty rather than something
sweet? Eskimos were known to toss away a killed caribou
without enough body fat for them to eat.

If I'm really hungry, I'll eat anything; I think that's what a.velasquez was saying.  Only if I'm not desperate for food will I get picky about what I eat.

5748
Diet and nutrition / Why do you use the paleo diet?
« on: July 30, 2008, 05:59:37 PM »

One of the things that interested me on coming to these boards was the diversity of reasons people have for looking at the paleo diet.  I thought it might be interesting to find out what the distribution of common reasons was like.

Feel free to post with more detail - especially if I missed your reason!

5749
Diet and nutrition / Re: Confused
« on: July 30, 2008, 07:17:23 AM »
As I understand it, the idea behind the paleo diet is to eat only things that were available during the paleolithic - the old stone age, when we were still hunter gatherers - or close modern equivalents.  This is because the paleolithic was long enough - hundreds of thousands of years - for us to adapt to those foods.  There's no question that we were consuming fruit - including fruit other than berries - back then; we were undoubtedly eating fruit even before the paleolithic, before we had tools at all.

Refrigeration and freezing would generally be considered acceptable, I think, because they don't change the content of the food.  This is in contrast to certain other forms of preservation, like canning with sugar or adding artificial preservatives, which do change what one is actually eating.  Similarly, we didn't have trucks back then, but we're allowed to consume meat that has been shipped by truck.

Milk and cheese are not paleo because we didn't start eating it until after we domesticated dairy animals in the neolithic, after the paleolithic.  While some modern humans have a mutation that permits digestion of milk sugar as an adult, the neolithic - roughly the last 10,000 years - has not been long enough for us to fully adapt to the composition of milk and other dairy products.  A similar argument goes for bread and alcohol.

You'll find differences of opinion regarding specific foods.  For example, modern fruits and vegetables have been bred, and in some cases genetically engineered, for appearance and other attributes in ways that hadn't happened by the paleolithic; that might affect their acceptability.  Most modern eggs and even meats have a different composition because we feed farm animals a different diet than they ate during the paleolithic.  Chocolate might be in the same category - there's a thread on it right now, I think.  I'm still learning about the details from the more knowledgeable people on this forum.

5750
Diet and nutrition / Re: Carrots and beets allowed?
« on: July 29, 2008, 09:47:21 PM »
Water chestnuts are an underground plant storage organ which can be eaten raw, so I'd guess that they would be okay.

5751
Diet and nutrition / Re: Meat in a low-carbon world
« on: July 27, 2008, 07:28:58 AM »
Why?  Itís an enormously expensive way to produce food, because it takes a calorie of fossil fuel energy to produce a calorie of food!  This has increased pollution as well as altering the planetís composition of species and shrunk its biodiversity.  Whatís going to happen to cheap corn when fossil fuel energy is no longer so cheap and available?

That's a good summary of the green revolution in your post.  I'd only note that while artificial nitrogen fixing was invented in the early 1900s, it wasn't until the middle of the century that it really transformed agriculture in the U.S.

It's "enormously expensive" in terms of the energy balance, but in terms of dollars, it's actually enormously cheap - as long as the fossil fuels hold out.  That's why the developed nations have enough spare food to give it away for free to the starving nations in the first place.

Once the fossil fuel runs out, we aren't going to be producing enough food to go around anyway, even if we all subsist on a diet of pure cornmeal.  Changing our diets just isn't going to help.  What we should be doing instead is replacing direct food aid - which drives their local food producers out of business - with aid designed to help them establish sustainable local sources of food.  Then they can eat what they want and can produce, and we can eat what we want and can produce.

5752
Diet and nutrition / Re: Where do you get your calories?
« on: July 26, 2008, 09:50:14 PM »
Another good option is to save bone scraps in the freezer until you get enough of them and then use them to make a long-simmered bone broth.  The Weston A Price Foundation claims that a cup of homemade bone broth has as much calcium as a cup of milk.  Dark leafy greens and sesame seeds both also have calcium.

Good point about the broth.  If nothing else, I can go back to rendering the turkey carcass at Thanksgiving and maybe add some vinegar to help with calcium extraction.

Greens are a traditional source of calcium, but it takes what seems to me like a tremendous volume of them to get the U.S. RDA - though as you point out, that much calcium might not actually be necessary.  Sesame seeds are why I eat the bread sticks, but I should probably just find them separately.

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All the major paleo authors use olive oil since it's one of the only oils you can get that is regularly cold-pressed from a paleo food.  It is one of only 2 plant oils that I use personally (the other being coconut oil).

I should check my grocery store for coconut oil.  Is it suitable for pan frying?  One issue with olive oil is that the smoke point seems kind of low for frying, which I do a lot of.

Would cold pressing make soy oil paleo?

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I eat the best quality meat that my time and budget will allow.  This does not always meet the grassfed standard.  However, I feel that the benefits of eating meat outweigh the risks of eating non-grassfed meat.  If it really bothers you, you can try to choose leaner cuts since chemicals get stored in fat tissue.

I agree with you here.  Grass fed beef doesn't actually have a lower dioxin content in the fat; its main known advantage is in having an omega 6 to omega 3 ratio that's only about 2:1.  Factory farmed beef is about 4:1, which is still substantially better than vegetable oils, especially corn oil at 20:1.  That's even ignoring the advantages animal fats have in more specific fatty acid makeup.

Anyway, I managed to substitute fruit and unsalted nuts for the grain based snacks for a few days, and things seemed to be working better.  Unfortunately 10g of shortbread last night and half a bun of bread today seems to have put me back to where I was.  I'm not sure my wife is ready for complete removal of grains from her diet yet.

5753
Diet and nutrition / Re: Question about snacking
« on: July 26, 2008, 04:56:05 PM »
My paleo snacks are fruit and nuts.

5754
Exercises / Re: New to the Paleolithic Diet and have questions..
« on: July 26, 2008, 03:59:53 PM »
i am into muscle building, as well i do lots of cardio, mostly HIIT. is the paleolithic diet good for muscle building? every muscle building diet ive heard about require lots of carbs.

If what you want to do is just increase muscle mass, the most important thing in your diet is probably protein.  Paleo would be fine for that since it allows unlimited meat.  For cardio, some carbohydrates is good, and paleo permits that too.

If you're specifically looking for extreme muscle definition, though, I think you may need to limit fat while building muscle?  Paleo may not be the best diet for that, since animal protein generally comes with a certain amount of fat.

5755
Diet and nutrition / Re: Where do you get your calories?
« on: July 22, 2008, 08:32:53 PM »
Thanks, everyone, for the information and suggestions!  I'd welcome any more.

Regarding the juice, I would prefer to replace the orange juice with whole fruit, but at present calcium enriched orange juice is my main source of calcium.  I'm trying to add more sardines as snacks, which would make the orange juice unnecessary.  I do want to keep some acidic fruit in my diet, as otherwise I get gallstones, and the home cure for that is painful.

Dairy is not an option, as I lack the neolithic adult lactase mutation needed to digest the stuff.

Nuts are a good idea.  Nuts do tend to cause me to chain feed just like refined carbohydrates do, but maybe unsalted nuts will help with that?

Snacks?  Not lunch?  Anyway, I would replace the breadsticks with a green salad topped with other raw veggies and an olive oil based dressing or something else fatty like nuts or avocado.

I generally prefer snacking thoughout the day to fixed meals - except in so far as meals are an opportunity to eat things that take more preparation than a snack justifies.  A salad is a good idea.  I'm not sure about the olive oil, though; why do we think olive oil is paleo?

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Eat a larger portion of meat.  Replace the potato with a cooked vegetable prepared in a paleo-friendly fat.

More meat is a possibility, though organic meat is expensive.  Frying mushrooms and vegetables in the fat that melts off the meat during cooking is a good idea.  Yeah, I know, that fat isn't exactly the same as that from wild aurochs, but the internal belly fat that wild ungulates have a lot of doesn't seem to be sold anywhere; I wouldn't even know what to ask for.

Here's the thing, though:  after a meal devoid of carbohydrates, I'll feel full, but I'll still have an urge to find some non-sweet carbs to eat.  If I ignore that urge, I'll often get a headache; perhaps my brain doesn't deal with ketosis well.  I guess I'm not trying to reduce the carbs so much as trying to find paleolithic carbs.  Are there carbohydrate rich root vegetables that are acceptably paleo?

5756
Diet and nutrition / Re: Grease
« on: July 20, 2008, 02:33:12 PM »
What are your thoughts on the health benefits/detriments of grease/lard?

I think that the currently popular stance against animal fat is based on dated information.  Here's how I see it:

Back in the '80s, there were studies that correlated heart disease with fat consumption.  Increased heart disease was correlated first with high fat consumption.  When people then tried to get a handle on whether certain kinds of fats were better or worse than others, it was found that in diets with equal amounts of fat, diets high in saturated fats were worse than diets that had more unsaturated fats.

Those studies, however, did not differentiate between animal fats and vegetable fats, and didn't differentiate between artificially hydrogenated fats and unhydrogenated fats.  It was simply assumed - without proof - that animal fats were worse than vegetable fats, simply because they have a higher saturated fat content.

Starting around 2000, some studies were done that made more detailed distinctions between different kinds of fats.  What these studies found was the following:

- worst were artificially hydrogenated vegetable oils like vegetable shortening (old style Crisco) and margarine
- unhydrogenated animal fats and vegetable oils were about the same
- fish oil was healthiest

Now, this was slightly puzzling from the point of view of saturated fat content, because animal fats had as much saturated fat as artificially hydrogenated fats.  Scientists then started looking for why the artificially hydrogenated fats seemed so much worse.

After a few more years of studies, they figured out why:  by far the worst fats are the "trans" fats, which are found only in trace amounts in nature, but which are created in large quantities in the hydrogenation process.  Since the purpose of hydrogenation is to increase the saturated fat content, significant amounts of trans fats are only found in conjunction with saturated fats. Animal fats got an undeserved bad name only by association with hydrogenated vegetable oils.

Note that these studies are based on modern animal fat composition and consumption patterns.  Fat from wild paleolithic animals was probably even healthier - perhaps comparable to modern fish oil, which mostly still comes from wild fish.  Farmed fish only became common recently, but there are already indications that it doesn't have the health benefits that wild fish does.

From a practical standpoint, there are still a couple of issues.  First, dioxins, which don't affect heart disease but do promote cancers, are ubiquitous in the modern environment and concentrate in animal fat.  There's actually slightly more of it in free range animals and eggs than in factory farmed animals and eggs, because it's picked up from dirt.  Of course, there was some dioxin in paleolithic times too - from forest fires and grass fires - but probably less than now.  Depending on just how bad the dioxin issue is, it might be a reason to avoid modern animal fats of all kinds.

The other practical issue is that it's practically impossible to find unhydrogenated lard, which would be the obvious choice for an animal based cooking oil.  It's for that reason that I still use soy oil for cooking - though I try to limit the amounts.  If I ever find organic lard, I'll switch.

5757
Diet and nutrition / Re: Eggs:how many and what kind do you eat?
« on: July 20, 2008, 12:30:28 PM »
If you care about omega 6 : omega 3 fat ratio, there's a big difference between regular eggs on the one hand, and organic or omega 3 eggs on the other.  Regular eggs are around 20:1 based on what I can find on the web, while omega 3 eggs are much closer to 1:1.

I've switched to omega 3 eggs, and have 1-2 a day, but I'm not really on the paleo diet yet.

5758
Diet and nutrition / Where do you get your calories?
« on: July 20, 2008, 12:24:54 PM »
I'm not on a paleo diet at the moment, primarily because I still eat bread and potatos.  I'm considering moving entirely to paleo for the possible long term health benefits.  I don't need to reduce my weight, so I don't need to reduce my calories.  I'm trying to figure out what I would replace the starch with.

Here's a typical day for me:

breakfast:  2 egg omelette with a little onion and 1/4 tomato, 6 oz orange juice

daytime snacks:  1/2 banana, sesame breadsticks with butter (maybe 300 kcal worth), 1/2 can sardines

dinner:  3 oz organic beef, 1/2 potato, small salad with no dressing (1/2 tomato is the only thing with much in the way of calories)

evening snacks:  1 oz popcorn or other grain based snack popped in soy oil, orange

It looks to me like about half my calories are from grain and potato starch.  What should I replace it with?  Where do you get your nonmeat calories?

5759
Introductions / Introduction
« on: July 20, 2008, 12:04:43 PM »
The forum says to introduce ourselves, so here I am.

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