2

votes

Are there any negative health consequences to eating no raw foods?

Answered on September 12, 2014
Created October 18, 2011 at 1:12 PM

Is there any evidence that humans need some raw food to be maximally healthy? Or can we eat a 100% cooked food? In other words, assuming a cooked diet that is otherwise very healthy (and that answers all of the body's vitamin/mineral needs), is there any reason to think there is something else (e.g., digestive enzymes, un-denatured proteins) in raw food that we need?

P.S. I know all about the wonders of raw milk vs. pasteurized milk, but I'd like to put that aside since dairy is by no means required for human health.

Second related question:

Assuming fruit is identified as something that makes sense to eat raw (because it's palatable and easy to digest raw or because polyphenols are degraded during cooking, or for another reason), is there any evidence that humans need to eat anything other than fruit (e.g., vegetables, nuts, meat) raw?

77877f762c40637911396daa19b53094

(78467)

on October 19, 2011
at 07:10 AM

I am myself puzzled about AGEs in diet like you mention. I rechecked again after your complain. There is some conflicting evidence around. See this thread: http://paleohacks.com/questions/803/heat-damage-ages-and-oxidised-fat#axzz1bD1PoOSr

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 10:50 PM

Maj; thanks for you answers. I will look into it more carefully as your confidence suggests you probably do know what you're talking about. :) Btw, this is the original Jay

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 09:50 PM

Maj...to your confusion again there are TWO JAY's on this thread.... read "not OP"...

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:17 PM

@Trevis: don't you eat salads ? I eat 2-4 large salads every day. That is big part of my raw part of the day.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:16 PM

So what is the point of your speak ? I don't get it. Choose whatever you want from 30-70 to 70-30, just don't go extreme.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:14 PM

*Yes, vitamins are lost during cooking but are the vitamins that remain more easily assimilated?* Hm... I guess that would be no. Cooking doesn't improve bio-availability of vitamins, only of certain cartenoids AFAIK. *Tap water does contain fluoride but does it all boil away when heated* It doesn't boil away, it concentrates. Chloride boils away, especially in the shower, directly in your mouth and nose. *and are dietary AGEs even bad?* AGEs are bad! dietary are from mars, it doesnt matter. *are cooked proteins easier to digest* - yes, I said that, however, not all you eat is protein.

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 08:58 PM

Well back to an anthropological view...do we know any humans that lived on 100% cooked food? If not I would question it as the most viable of diets. If so then look at their health. I personally don't know any, but I believe there are some that thrived on primarily raw with some cooked. Just don't see 100% of either being best I guess.-----> Not OP---->

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 08:58 PM

Well back to an anthropological view...do we know any humans that lived on 100% cooked food? If not I would question it as the most viable of diets. If so then look at their health. I personally don't know any, but I believe there are some that thrived on primarily raw with some cooked. Just don't see 100% of either being best I guess.

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 08:38 PM

Your answer contains claims that might be meaningless... Yes, vitamins are lost during cooking but are the vitamins that remain more easily assimilated? Yes, there are digestive enzymes in food, but are the endogenous enzymes we produce exhausted to a greater extent when we digest un-cooked protein and, in the final analysis, are cooked proteins easier to digest? Some cooking does produce AGEs, but does all cooking (e.g., steaming) and are dietary AGEs even bad? Tap water does contain fluoride but does it all boil away when heated? Nutrition is about nuance.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 08:30 PM

Yes, I guess, never seen such food in my life tho. I consider fermented foods like natto or dairy to be raw. I eat lots of dairy - goat, cow, whatever...

667f6c030b0245d71d8ef50c72b097dc

(15976)

on October 18, 2011
at 07:10 PM

That evidence is me:) ah I guess an occasional mesclun salad sneaks in. And beef liver. That's it though, promise

667f6c030b0245d71d8ef50c72b097dc

(15976)

on October 18, 2011
at 07:09 PM

@maj, unpasteurized sauerkraut kimchi etc would be included in your idea of raw? Those are the only things I eat that I don't cook. Just curious.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:41 PM

The question is not does it matter, but how much it matters. What is the ratio between harm / benefit. That is the hard question, but why bothering... its not fun to cook every meal.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:40 PM

Those are not claims btw, those are facts.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:39 PM

You can say that on various shake diets you eat 100% cooked food. Protein shakes are basically - cooked by industry. Last chance was one of such diets. I don't know if I am kidding or not.

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 06:31 PM

I've read all of these claims before. Is there any evidence that any of this matters for humans? Are there any examples of people that ate 100% cooked food?

7b11ed525ffa23bc7257684e27488a6a

(366)

on October 18, 2011
at 05:22 PM

I agree with this answer. Weston Price found that cultures untouched by civilization ate at least some of their animal foods raw. Of course, fruit, nuts, herbs and such lend themselves to eating raw after gathering. It takes time and energy to cook as well.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:36 PM

It has lot of valid points tho, most notably that fire was around 700 000 years.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:34 PM

It has some valid points tho, most notably that we cook 700 000 years.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:34 PM

That article is biased.

F1b39d4f620876330312f4925bd51900

(4090)

on October 18, 2011
at 03:25 PM

Great Article! I take exception to lightly cooked fish -sushi is worth the risk! haha!

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 03:12 PM

Agree with your points. Cooking makes food poisoning much less likely, so is it better to steam oysters and spinach to limit that risk or is there something inherently good about raw foods that might be lost if cooked?

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 03:10 PM

I don't eat many salad greens and when I do, it's usually spinach. I suppose I could eat that raw...

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6 Answers

4
E5c7f14800c5992831f5c70fa746dc5c

(12857)

on October 18, 2011
at 01:24 PM

probably not. I have seen zero evidence that you need raw food to be healthy

667f6c030b0245d71d8ef50c72b097dc

(15976)

on October 18, 2011
at 07:10 PM

That evidence is me:) ah I guess an occasional mesclun salad sneaks in. And beef liver. That's it though, promise

2
77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:27 PM

I think there are.

I believe humans should eat around 50-50 raw - cooked.

Why ?

Many vitamins are lost with cooking - vitamin C, folate, CoQ10 etc... this depends on time and temperature ofc. Supplements are OK, but they are NOT REPlACEMENT. We still don't know about many molecules that are beneficial for our health and new are discovered each year. Synergistic property of raw food vitamins is well known.

Others leech into the water and are often lost this way.

Cooking itself produces AGEs depending on food content and dietary AGEs do get absorbed somehow

Cooking will denature proteins. They might fold back but some require chaperons and can not fold back. They will get digested but generally not into amino acids but short proteins - peptides which still might have biological role if folded properly.

Cooking aparature introduces additional toxins and if you use tap water it concentrates fluoride.

Thats negative, on positive we have less phatogens, less certain kinds of toxins, easier digestion, new food choices etc...

On the raw side we have intact enzymes which help digestion, intact proteins and non rancid fats. On the negative side, more toxins and limited food choices which means malnutrition which means disease and death.

So, ideally, I think we should balance it out. My raw input are mostly vegetables, occasional fruit and nuts, rarely eggs and meat.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:17 PM

@Trevis: don't you eat salads ? I eat 2-4 large salads every day. That is big part of my raw part of the day.

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 08:58 PM

Well back to an anthropological view...do we know any humans that lived on 100% cooked food? If not I would question it as the most viable of diets. If so then look at their health. I personally don't know any, but I believe there are some that thrived on primarily raw with some cooked. Just don't see 100% of either being best I guess.

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 06:31 PM

I've read all of these claims before. Is there any evidence that any of this matters for humans? Are there any examples of people that ate 100% cooked food?

667f6c030b0245d71d8ef50c72b097dc

(15976)

on October 18, 2011
at 07:09 PM

@maj, unpasteurized sauerkraut kimchi etc would be included in your idea of raw? Those are the only things I eat that I don't cook. Just curious.

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 09:50 PM

Maj...to your confusion again there are TWO JAY's on this thread.... read "not OP"...

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:40 PM

Those are not claims btw, those are facts.

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 08:38 PM

Your answer contains claims that might be meaningless... Yes, vitamins are lost during cooking but are the vitamins that remain more easily assimilated? Yes, there are digestive enzymes in food, but are the endogenous enzymes we produce exhausted to a greater extent when we digest un-cooked protein and, in the final analysis, are cooked proteins easier to digest? Some cooking does produce AGEs, but does all cooking (e.g., steaming) and are dietary AGEs even bad? Tap water does contain fluoride but does it all boil away when heated? Nutrition is about nuance.

77877f762c40637911396daa19b53094

(78467)

on October 19, 2011
at 07:10 AM

I am myself puzzled about AGEs in diet like you mention. I rechecked again after your complain. There is some conflicting evidence around. See this thread: http://paleohacks.com/questions/803/heat-damage-ages-and-oxidised-fat#axzz1bD1PoOSr

7b11ed525ffa23bc7257684e27488a6a

(366)

on October 18, 2011
at 05:22 PM

I agree with this answer. Weston Price found that cultures untouched by civilization ate at least some of their animal foods raw. Of course, fruit, nuts, herbs and such lend themselves to eating raw after gathering. It takes time and energy to cook as well.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:39 PM

You can say that on various shake diets you eat 100% cooked food. Protein shakes are basically - cooked by industry. Last chance was one of such diets. I don't know if I am kidding or not.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:16 PM

So what is the point of your speak ? I don't get it. Choose whatever you want from 30-70 to 70-30, just don't go extreme.

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 10:50 PM

Maj; thanks for you answers. I will look into it more carefully as your confidence suggests you probably do know what you're talking about. :) Btw, this is the original Jay

3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 08:58 PM

Well back to an anthropological view...do we know any humans that lived on 100% cooked food? If not I would question it as the most viable of diets. If so then look at their health. I personally don't know any, but I believe there are some that thrived on primarily raw with some cooked. Just don't see 100% of either being best I guess.-----> Not OP---->

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 06:41 PM

The question is not does it matter, but how much it matters. What is the ratio between harm / benefit. That is the hard question, but why bothering... its not fun to cook every meal.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 09:14 PM

*Yes, vitamins are lost during cooking but are the vitamins that remain more easily assimilated?* Hm... I guess that would be no. Cooking doesn't improve bio-availability of vitamins, only of certain cartenoids AFAIK. *Tap water does contain fluoride but does it all boil away when heated* It doesn't boil away, it concentrates. Chloride boils away, especially in the shower, directly in your mouth and nose. *and are dietary AGEs even bad?* AGEs are bad! dietary are from mars, it doesnt matter. *are cooked proteins easier to digest* - yes, I said that, however, not all you eat is protein.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 08:30 PM

Yes, I guess, never seen such food in my life tho. I consider fermented foods like natto or dairy to be raw. I eat lots of dairy - goat, cow, whatever...

1
5c8139d7937126906bd9133bb6e10315

on October 18, 2011
at 02:41 PM

I recently wrote a post about why you should eat primarily cooked food: http://www.radiancenutrition.com/2011/08/19/put-down-that-kale-smoothie-why-you-should-cook-your-food/

Diana

F1b39d4f620876330312f4925bd51900

(4090)

on October 18, 2011
at 03:25 PM

Great Article! I take exception to lightly cooked fish -sushi is worth the risk! haha!

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 03:12 PM

Agree with your points. Cooking makes food poisoning much less likely, so is it better to steam oysters and spinach to limit that risk or is there something inherently good about raw foods that might be lost if cooked?

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:36 PM

It has lot of valid points tho, most notably that fire was around 700 000 years.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:34 PM

That article is biased.

77877f762c40637911396daa19b53094

(78467)

on October 18, 2011
at 04:34 PM

It has some valid points tho, most notably that we cook 700 000 years.

1
3846a3b61bc9051e4baebdef62e58c52

(18635)

on October 18, 2011
at 02:12 PM

Some components are more bioavailable raw while some are more available after heating. Could you live on only cooked? Probably. But, I would just hypothesize that you would get a greater variety of nutrients from utilizing both. And in addition to raw fruits how about salad greens (I would not cook down red leaf lettuce)?

4781cf8ae1bfcb558dfb056af17bea94

(4359)

on October 18, 2011
at 03:10 PM

I don't eat many salad greens and when I do, it's usually spinach. I suppose I could eat that raw...

0
293ba4c95d190bc616b27d85b10d705a

(661)

on October 18, 2011
at 02:43 PM

for me, constipation

0
13a44ea00b0c9af0b6d0f3d5f5c2cfca

(7223)

on October 18, 2011
at 01:23 PM

I can't answer your question in its entirely, but I'd be wary of consuming nuts that weren't raw unless I soaked and dehydrated them and/or roasted them at low temps myself. In other words, I wouldn't buy roasted nuts because the high temps used in commercial roasted nuts can break down the natural oils and lead to oxidation.

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