Medium avatar
10

Tell it to me straight: the negative side effects of too much protein

by (10653)
Updated about 2 hours ago
Created December 15, 2011 at 6:01 AM

Trust me, I have gone through so much reading on this subject and I'm still confused. I eat 2-3 times my recommended intake of protein and have been doing so every day for several months. Is there any evidence thus far on long-term, potentially negative, effects of too much protein? Fat storage? Is it insulinogenic? Something to do with the kidneys? And what the heck are uncoupling proteins? Or is there really no such thing as "too much protein?" I have a cornucopia of questions but I don't know where I want to begin and frankly, I don't know when it will end. I know there's not an end-all-be-all answer but any contribution backed by legitimate sources will help.

7fc82eebafd44badc73c520f44660150
3280 · February 23, 2014 at 6:08 PM

Here's a handy calculator for macro's http://www.freedieting.com/tools/nutrient_calculator.htm

518bce04b12cd77741237e1f61075194
11557 · February 14, 2012 at 2:52 AM

Actually 2 SD around deficiency..

368568eb91f1b58d2f52c9c566d331b5
182 · December 19, 2011 at 3:13 PM

Neither one of those deal with the study I posted. Post something legit that doesn't follow the forum hivemind = downvotes. Sad.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 2:08 PM

The easiest thing to do is simply add coconut oil to coffee, even when you're doing IF; I mix it with cocoa powder to avoid the oil slick at the top, but have it however you enjoy it. Experiment and see what you enjoy. (The point of IF, at least to me, is to shut down the insulin spikes, so the tablespoon or two from coconut oil with coffee doesn't interfere with this, *and* keeps me from hunger.)

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 2:05 PM

It sounds like you're doing great, but only need some small tweaks if you feel hungry. Yes, you could add some more coconut oil to food, but actually eat it, another idea is to make "Buttery Coffee" or "Creamy Macadamia Coffee" from here: http://www.primaltoad.com/coffee-smoothies/ - you could also add some fattier cuts of meat, or even a few rashers of bacon.

Medium avatar
10653 · December 17, 2011 at 5:14 AM

I don't crave SAD foods at all. I'm not very active (do some weightlifting, walking/hiking, and bodyweight exercises but very low intensity). I eat 1800-2200 calories a day, regardless of whether or not I workout. I IF and eat low carb (20-60 g/day). I do cook with coconut oil and butter/ghee but how would I add to that? Like instead of cooking with 1 tbsp, cook with 2?

559aa134ff5e6c8bcd608ba8dc505628
3631 · December 17, 2011 at 3:40 AM

I was trying to get at this a few months ago with this convoluted question of mine: http://paleohacks.com/questions/70375/more-about-excess-protein-and-what-mcgraw-hill-says#axzz1gl5d5IT2 Funny how you tried to answer it then. :) I've learned more about the citric-acid cycle and metabolism since i posted that, but many questions remain... I'm glad to see you got a lot more/more precise answers than i did! It's still a bit mysterious though, right?

559aa134ff5e6c8bcd608ba8dc505628
3631 · December 17, 2011 at 3:39 AM

I was trying to get at this a few months ago with this convoluted question of mine: paleohacks.com/questions/70375/… Funny how you tried to answer it then. :) I've learned more about the citric-acid cycle and metabolism since i posted that, but many questions remain... I'm glad to see you got a lot more/more precise answers than i did! It's *still* a bit mysterious though, right?

559aa134ff5e6c8bcd608ba8dc505628
3631 · December 17, 2011 at 3:38 AM

I was trying to get at this with this convoluted question of mine. http://paleohacks.com/questions/70375/more-about-excess-protein-and-what-mcgraw-hill-says#axzz1gl5d5IT2 Funny how you tried to answer it then. :) I've learned more about the citric-acid cycle and metabolism since i posted that, but many questions remain... I'm glad to see you got a lot more/more precise answers than i did! STILL a bit mysterious tho, right?

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 1:11 AM

And so did Mark Sisson: http://www.marksdailyapple.com/red-meat-study/

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 1:11 AM

Yeah, but that's when they count red meat to include stuff like spam, pepperoni, and other crap. They can play games with stuff like have a survey to ask who eats meat and not exclude smokers, or have more smokers in the red meat camp than in the vegan camp, etc. I could have swore Robb Wolf had a podcast question on this. He did: http://robbwolf.com/2011/03/08/psepisode70/

Cf32992bfa1907147c7cdc451bba9c63
2890 · December 16, 2011 at 10:05 PM

RDA is determined by the minimum amount to ensure neutral protein balance in 2 standard deviations above the median. So it is far from ideal, it is what prevents deficiencies, which is what it is intended to be.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:56 PM

Sorry, didn't mean to suggest is as "go count calories" as much as fix the protein for your target weight so you get enough for repairs, and a little bit more for glucose, then eat enough fats until you're not hungry. Also keep in mind that grams of meat is not grams of protein. Meat is something like 25% protein, rest is mostly water and some fat. So make sure when you count grams of protein you multiply by 3 or 4 to get the portion size in meat.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:47 PM

Plan to get enough protein for your target weight as per above post, then use coconut oil and other fats to make up the remaining calories. (And use L-Glutamine if you need to quash carb cravings.) I'm kind of wondering what your meals and workouts look like.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:43 PM

No, not unless you're a lioness. :) If you're that hungry, take some time and see what you're craving. Are you working out like crazy? Like crossfit 5x a week? If not, you're probably craving some micro nutrient in the food you're craving, and it's a challenge to figure out what it is. It could also be that you're addicted to SAD foods and haven't gotten over the carb addiction, but I've seen you on PH for quite a while, so that's unlikely to be it. Maybe try to figure out how many calories you're eating and see if you eat at least 2000 if you're inactive, upto 4000 if you're very active

E2b72f1912f777917d8ee6b7fba43c26
2379 · December 16, 2011 at 4:41 PM

(rabbit meat has virtually no fat)

E2b72f1912f777917d8ee6b7fba43c26
2379 · December 16, 2011 at 4:40 PM

The risk factor is not to consume any fat along with lots of protein for a longer period of time. Suppose you would be living on an island, which has nothing but rabbits to offer, "protein poisoning" might become a bigger issue.

D1c02d4fc5125a670cf419dbb3e18ba7
13692 · December 16, 2011 at 2:33 PM

No it's not open to debate. Your word is the final say :-) I agree regarding the protein. Beyond the evidence regarding life extension, the typical bodybuilding meme of 1 gram per pound of bodyweight seems to be the paradigm so many people have. http://paleohacks.com/questions/53035/how-much-exercise-needed-for-1-1-5-grams-of-protein-per-day/53071#53071

737471a5bc1c8b81d968c3f3fcd13b71
379 · December 16, 2011 at 2:23 PM

I have an idea of possible negative consequences, just from what I thought immediately after reading your question. Protein is very satiating (ever noticed you can eat a can of pringles easy but not a dozen eggs, even though the calories are the same? The eggs would be about 950, the pringles approx 900.) So, if large amounts of protein are consumed prior to eating any other foods, there may exist an unintentional calorie deficit, or lack of necessary nutrients from veggies. You'd feel too full to eat anything else you need.

Medium avatar
10653 · December 16, 2011 at 4:16 AM

So what are the symptoms of ammonia toxicity? Should I be concerned because I do eat that much protein most days and I'm 5'3", 105 lbs.

Be1dbd31e4a3fccd4394494aa5db256d
17949 · December 16, 2011 at 4:01 AM

And there's another one. ncbi.nlm.nih.gov/pubmed/15532008 The one weakness of these studies I can think of is small population size. Ray Peat has suggested that dietary tryptophan is to blame raypeat.com/articles/aging/… And he suggests that this wouldn't happen with tryptophan-free protein like in bone broth and gelatin. So perhaps making that swap could help people achieve optimal testosterone levels. Also his article counts as another view on the side-effects of too much tryptophan.

Be1dbd31e4a3fccd4394494aa5db256d
17949 · December 16, 2011 at 4:00 AM

And there's another one. http://www.ncbi.nlm.nih.gov/pubmed/15532008 The one weakness of these studies I can think of is small population size. Ray Peat has suggested that dietary tryptophan is to blame http://raypeat.com/articles/aging/tryptophan-serotonin-aging.shtml And he suggests that this effect would happen with tryptophan-free protein like in bone broth and gelatin. So perhaps making that swap could help people achieve optimal testosterone levels. Also his article counts as another view on the side-effects of too much tryptophan.

Medium avatar
10653 · December 16, 2011 at 3:36 AM

But I'm guessing it's not normal to feel ravenous all the time... haha.

286a4ff7c362241c5c4b020df4972212
1288 · December 15, 2011 at 9:55 PM

I follow Rosedale and I am at about 40% sometimes more - but still eat less than 80 gms a day

C7e3ba0ed51a6195ae022822a8f056ac
673 · December 15, 2011 at 8:57 PM

^^ Exactly. If you can stomach eating natural protein (in addition to carbs/fat that you consume) to detrimental excess then that's just nasty.

5ef574d7893bc816ec52e04139e9bc09
6087 · December 15, 2011 at 7:06 PM

I would only be remotely concerned about this issue if you're taking supplemental whey or something. Even then, I really doubt you can comfortably overdo protein.

5ef574d7893bc816ec52e04139e9bc09
6087 · December 15, 2011 at 7:02 PM

Yeah I have a theory that the reason Indians age really badly and become crazy ugly is due to their terrible diets.

5ef574d7893bc816ec52e04139e9bc09
6087 · December 15, 2011 at 7:01 PM

lol nice ^

25b139cc1954456d9ea469e40f984cd3
2889 · December 15, 2011 at 6:48 PM

Either not due to protein per se, or due to intakes well above 3xbodyweight in grams, as strength athletes routinely consume such quantities with no ill effects.

Medium avatar
10653 · December 15, 2011 at 6:27 PM

I'm at about 35% right now...

25b139cc1954456d9ea469e40f984cd3
2889 · December 15, 2011 at 6:25 PM

That's not due to protein per se.

Medium avatar
10194 · December 15, 2011 at 4:17 PM

That's why I recommend reading A House for Mr. Biswas. A poor vegetarian diet is the worst of all diets.

A968087cc1dd66d480749c02e4619ef4
20411 · December 15, 2011 at 2:53 PM

Don't make me cry!

Medium avatar
10194 · December 15, 2011 at 1:08 PM

Constipation...

C00e493393828df34be65ddc25456c7c
610 · December 15, 2011 at 8:11 AM

What's 2-3 times your recommended protein intake? I think some can handle more protein than others. If you do well on excess protein and have no issues why stress about it?

B91162c65eab8082b414048a30759a77
2565 · December 15, 2011 at 7:27 AM

lol first time god and protein were tagged in the same question

Total Views
5.4K

Recent Activity
25b139cc1954456d9ea469e40f984cd3

Last Activity
73D AGO

Followers
0

Get Free Paleo Recipes Instantly

13 Answers

25b139cc1954456d9ea469e40f984cd3
17
2889 · December 15, 2011 at 6:06 AM

You might gain unsightly muscle, lose fat, and look hot. This would be tragic.

A968087cc1dd66d480749c02e4619ef4
20411 · December 15, 2011 at 2:53 PM

Don't make me cry!

A968087cc1dd66d480749c02e4619ef4
5
20411 · December 15, 2011 at 2:51 PM

Well, there are folks that think too much protein can be problematic for longevity (Rosedale, Mercola, Ornish). I'm not sure if they are correct or not. My sense is that if you are in the range of 20-25% of calories as protein, you're probably okay.

5ef574d7893bc816ec52e04139e9bc09
6087 · December 15, 2011 at 7:01 PM

lol nice ^

286a4ff7c362241c5c4b020df4972212
1288 · December 15, 2011 at 9:55 PM

I follow Rosedale and I am at about 40% sometimes more - but still eat less than 80 gms a day

Medium avatar
10653 · December 15, 2011 at 6:27 PM

I'm at about 35% right now...

082bf04a7486991c5e573a66f1404b3e
5
813 · December 15, 2011 at 9:12 AM

My understanding (always my opening caveat :P) is that excess protein in your diet simply gets excreted out in the urine; meaning hugely excessive intake can put more stress on the kidneys.

Having said that, the "RDA" for protein has nothing to do with what most human bodies are capable of utlising; it's probably more like the point below which you start losing bone density or something.

Anyway, as a ball-park figure, if you're eating below 200g a day, I'd say there's nothing to worry about (and even on paleo not many get close to even that).

However, if you're still concerned - just drink more water to oil the ol' kidneys :)

Aside from wasted money (as protein is generally the most expensive macronutrient from a supermarket-shelf point of view), I don't really see any downsides in taking a bit more than strictly necessary.

Cf32992bfa1907147c7cdc451bba9c63
2890 · December 16, 2011 at 10:05 PM

RDA is determined by the minimum amount to ensure neutral protein balance in 2 standard deviations above the median. So it is far from ideal, it is what prevents deficiencies, which is what it is intended to be.

E2b72f1912f777917d8ee6b7fba43c26
3
2379 · December 15, 2011 at 6:52 AM

Well if you consume too much lean protein, a condition called "rabbit starvation" or "protein poisoning" could occur. But really unlikely in a normal diet though. http://en.wikipedia.org/wiki/Rabbit_starvation

25b139cc1954456d9ea469e40f984cd3
2889 · December 15, 2011 at 6:25 PM

That's not due to protein per se.

25b139cc1954456d9ea469e40f984cd3
2889 · December 15, 2011 at 6:48 PM

Either not due to protein per se, or due to intakes well above 3xbodyweight in grams, as strength athletes routinely consume such quantities with no ill effects.

E2b72f1912f777917d8ee6b7fba43c26
2379 · December 16, 2011 at 4:41 PM

(rabbit meat has virtually no fat)

E2b72f1912f777917d8ee6b7fba43c26
2379 · December 16, 2011 at 4:40 PM

The risk factor is not to consume any fat along with lots of protein for a longer period of time. Suppose you would be living on an island, which has nothing but rabbits to offer, "protein poisoning" might become a bigger issue.

64433a05384cd9717c1aa6bf7e98b661
2
15226 · September 07, 2013 at 12:44 AM

Dietary protein isn't directly related to uncoupling protein intake. This question has a pretty in-depth explanation of uncoupling proteins, but in a nutshell they allow your body to dissipate fat as heat when there is too much fat in the cell and you don't need to make any more energy (ATP)

http://paleohacks.com/questions/78385/where-do-the-calories-go/78418#78418

edit: to make more sense

Be1dbd31e4a3fccd4394494aa5db256d
2
17949 · December 16, 2011 at 3:40 AM

Just putting it out there that more protein than is beneficial (I'm not going to say more than "needed" because as has been pointed out, it's silly to base recommendations on what you absolutely need to avoid death) lowers testosterone levels in males. http://jap.physiology.org/content/82/1/49.long And I have seen a few others that show this.

So while there seem to be some benefits to a certain amount of protein, it may work against somebody trying to gain muscle if more than is needed for optimal muscle growth is consumed. Protein is essential for muscle growth but just how much is optimal is probably overestimated by nearly everyone.

This is open to debate if anyone has objections.

Be1dbd31e4a3fccd4394494aa5db256d
17949 · December 16, 2011 at 4:00 AM

And there's another one. http://www.ncbi.nlm.nih.gov/pubmed/15532008 The one weakness of these studies I can think of is small population size. Ray Peat has suggested that dietary tryptophan is to blame http://raypeat.com/articles/aging/tryptophan-serotonin-aging.shtml And he suggests that this effect would happen with tryptophan-free protein like in bone broth and gelatin. So perhaps making that swap could help people achieve optimal testosterone levels. Also his article counts as another view on the side-effects of too much tryptophan.

Be1dbd31e4a3fccd4394494aa5db256d
17949 · December 16, 2011 at 4:01 AM

And there's another one. ncbi.nlm.nih.gov/pubmed/15532008 The one weakness of these studies I can think of is small population size. Ray Peat has suggested that dietary tryptophan is to blame raypeat.com/articles/aging/… And he suggests that this wouldn't happen with tryptophan-free protein like in bone broth and gelatin. So perhaps making that swap could help people achieve optimal testosterone levels. Also his article counts as another view on the side-effects of too much tryptophan.

D1c02d4fc5125a670cf419dbb3e18ba7
13692 · December 16, 2011 at 2:33 PM

No it's not open to debate. Your word is the final say :-) I agree regarding the protein. Beyond the evidence regarding life extension, the typical bodybuilding meme of 1 gram per pound of bodyweight seems to be the paradigm so many people have. http://paleohacks.com/questions/53035/how-much-exercise-needed-for-1-1-5-grams-of-protein-per-day/53071#53071

F2cd77a6d2133ca3ae5b4353c4047577
2
943 · December 16, 2011 at 3:20 AM

Many cite deamination or the conversion of amino acids into ammonia as the most notable danger in consuming protein in quantity.

Paul Jaminet, for example, claims that somewhere between 150 and 200 grams of protein depending on body/liver size, one will start to experience ammonia toxicity. This occurs because the body is no longer able to convert the ammonia to urea and the nitrogen and ammonia lingers in the body as a toxin.

http://perfecthealthdiet.com/?p=2712

Eat more fat. From what I've read, it's rather unlikely you could consume saturated fat in quantities that would be toxic to the body since it's utilized by such a vast number of organs/systems.

Medium avatar
10653 · December 16, 2011 at 4:16 AM

So what are the symptoms of ammonia toxicity? Should I be concerned because I do eat that much protein most days and I'm 5'3", 105 lbs.

7fc82eebafd44badc73c520f44660150
3280 · February 23, 2014 at 6:08 PM

Here's a handy calculator for macro's http://www.freedieting.com/tools/nutrient_calculator.htm

96440612cf0fcf366bf5ad8f776fca84
0
17136 · December 16, 2011 at 2:52 AM

The rule seems to be .5 to 1.5g of protein per lbs of target weight. You fill up the rest of the macros with fat and a little bit of carbs and all is good.

But don't bother measuring... Let your hunger guide you. As long as you don't fool it with excitotoxins or the wrong kinds of carbs, it will lead you in the right direction.

There's no reason to eat tons of meat, unless you feel ravenous. In which case, by all means, give in to your carnivorous side. I do. :) But usually only after an extra large work out, or longer than usual IF.

Protein does trigger insulin (but, also glucagon, so not as bad as carbs), so high excess can be as bad as excess carbs. We need only as much as is needed for protein repairs, and a bit more for neoglucogenesys, if we're not doing carbs. (But it's better to get enough of each of fat, protein, and carbs than have to convert.)

Unless you have kidney problems, don't worry about it, and even then, there were some papers saying that eating protein/fat can help rather than hurt kidney issues. We've had more than a million years worth of adaptation as humanoids, and loads more as mammals. Our senses are keen enough to guide us as long as we stay away from things that fool us. Cravings for specific foods are very useful as the point to what nutrients we need in those foods (assuming we're not addicted.)

Too much protein without fat can lead to rabbit fever, but you're unlikely going to have that issue unless all you eat is lean protein, and nothing else.

Medium avatar
10653 · December 16, 2011 at 3:36 AM

But I'm guessing it's not normal to feel ravenous all the time... haha.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:43 PM

No, not unless you're a lioness. :) If you're that hungry, take some time and see what you're craving. Are you working out like crazy? Like crossfit 5x a week? If not, you're probably craving some micro nutrient in the food you're craving, and it's a challenge to figure out what it is. It could also be that you're addicted to SAD foods and haven't gotten over the carb addiction, but I've seen you on PH for quite a while, so that's unlikely to be it. Maybe try to figure out how many calories you're eating and see if you eat at least 2000 if you're inactive, upto 4000 if you're very active

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 2:08 PM

The easiest thing to do is simply add coconut oil to coffee, even when you're doing IF; I mix it with cocoa powder to avoid the oil slick at the top, but have it however you enjoy it. Experiment and see what you enjoy. (The point of IF, at least to me, is to shut down the insulin spikes, so the tablespoon or two from coconut oil with coffee doesn't interfere with this, *and* keeps me from hunger.)

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 2:05 PM

It sounds like you're doing great, but only need some small tweaks if you feel hungry. Yes, you could add some more coconut oil to food, but actually eat it, another idea is to make "Buttery Coffee" or "Creamy Macadamia Coffee" from here: http://www.primaltoad.com/coffee-smoothies/ - you could also add some fattier cuts of meat, or even a few rashers of bacon.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:47 PM

Plan to get enough protein for your target weight as per above post, then use coconut oil and other fats to make up the remaining calories. (And use L-Glutamine if you need to quash carb cravings.) I'm kind of wondering what your meals and workouts look like.

96440612cf0fcf366bf5ad8f776fca84
17136 · December 16, 2011 at 9:56 PM

Sorry, didn't mean to suggest is as "go count calories" as much as fix the protein for your target weight so you get enough for repairs, and a little bit more for glucose, then eat enough fats until you're not hungry. Also keep in mind that grams of meat is not grams of protein. Meat is something like 25% protein, rest is mostly water and some fat. So make sure when you count grams of protein you multiply by 3 or 4 to get the portion size in meat.

Medium avatar
10653 · December 17, 2011 at 5:14 AM

I don't crave SAD foods at all. I'm not very active (do some weightlifting, walking/hiking, and bodyweight exercises but very low intensity). I eat 1800-2200 calories a day, regardless of whether or not I workout. I IF and eat low carb (20-60 g/day). I do cook with coconut oil and butter/ghee but how would I add to that? Like instead of cooking with 1 tbsp, cook with 2?

7bf306ada57db47547e9da39a415edf6
0
11254 · December 15, 2011 at 6:52 PM

Doubtful. Protein overload may be doable, but it would be pretty uncomfortable and probably require some sort of refined food.

Now the flip side to this is Rosedale (and others) who are saying that limiting protein will keep you living longer. They aren't saying protein is dangerous per se, but that excess protein turns on growth factors and this encourages bigger muscles but seems to also encourage aging. So their game is to keep protein intake under 20g or so a serving and between 60-80g a day so as not to trigger this pathway.

I like the idea, but I am wondering if it actually works that way. Perhaps a better application would be to mimic the seasonal food situation in earlier times. High summer= food abundance and growth while the dead of winter= being cold and hungry while a lot of those processes that promote longevity kick in.

Cf4576cbcc44fc7f2294135609bce9e5
0
3125 · December 15, 2011 at 3:20 PM

just one more comment i would like to make is most vegitarians like to argue this point with the paleo diet people because they can use numbers. As we all know paleo diet folk, never count calories because its pointless. i have never heard of a person getting fatter eating paleo yet i know plenty of vegitarians that eat so many carbohydrates they become diabetic. for instance, the country of india are mostly vegitarians ,yet suffer from diabetes at an alarming rate just as americans do.

5ef574d7893bc816ec52e04139e9bc09
6087 · December 15, 2011 at 7:02 PM

Yeah I have a theory that the reason Indians age really badly and become crazy ugly is due to their terrible diets.

Medium avatar
10194 · December 15, 2011 at 4:17 PM

That's why I recommend reading A House for Mr. Biswas. A poor vegetarian diet is the worst of all diets.

Cf4576cbcc44fc7f2294135609bce9e5
0
3125 · December 15, 2011 at 3:08 PM

i laughed when i read the RDA for protein. that's the minimal amount to prevent death. You know just like the RDA for Vitamin C will prevent death but not sub clinical survey diseases such as gingivitis and atherosclerosis and many more unknowns.i have no answer except that a healthy mind will tell a healthy body what to burn as fuel. All you have to do is relax and say to yourself, what sounds good to eat right now. you would be amazed that the mind can control food intake to the point that just overeating a single cucumber slice daily for twenty years will make you fat. By the way since switching to a paleo diet my protein intake has increased like eveybody elses. yet, i seem to get less dehydrated than before. So maby extra protein improves kidney function? who knows? i dont.

518bce04b12cd77741237e1f61075194
11557 · February 14, 2012 at 2:52 AM

Actually 2 SD around deficiency..

Dfada6fe4982ab3b7557172f20632da8
0
5332 · December 15, 2011 at 9:38 AM

I think a lot of the negative consequences are actually about the lack of other nutrients when trying to subsist on only protein. And there's nothing conclusive enough to make official guidelines (and we all know how willing they are to jump to the wrong conclusions without evidence). And still that's 300g+ depending on your size for a high-protein diet, which I don't think you're eating!

368568eb91f1b58d2f52c9c566d331b5
-1
182 · December 15, 2011 at 7:18 PM

Not protein per se, but there appears to be an increased risk of colorectal cancer from red meat - http://www.ncbi.nlm.nih.gov/pubmed/21209396

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 1:11 AM

And so did Mark Sisson: http://www.marksdailyapple.com/red-meat-study/

96440612cf0fcf366bf5ad8f776fca84
17136 · December 17, 2011 at 1:11 AM

Yeah, but that's when they count red meat to include stuff like spam, pepperoni, and other crap. They can play games with stuff like have a survey to ask who eats meat and not exclude smokers, or have more smokers in the red meat camp than in the vegan camp, etc. I could have swore Robb Wolf had a podcast question on this. He did: http://robbwolf.com/2011/03/08/psepisode70/

368568eb91f1b58d2f52c9c566d331b5
182 · December 19, 2011 at 3:13 PM

Neither one of those deal with the study I posted. Post something legit that doesn't follow the forum hivemind = downvotes. Sad.

Answer Question

Login to Your PaleoHacks Account

Get Free Paleo Recipes