Selection of potential MYTHS

[Jimus Maximus]

Can someone please help me out? I'd like to think that I've reserched these boards pretty well over time but there's a list of things I've either picked up here or just heard somewhere that confuse me.

Here's my list of head-doing Myths / non myths (you tell me)

Do you need carbs to help absorbtion of protein?
e.g What if I was cutting and had 3-4 meals of lean protein ONLY (plus 2 meals with carbs)?

Nuts - Good for your good fats right? Do nuts slow up absorbtion of protein?

Someone told me a human can only absorb 70-80g of protein per day. I have disagreed with this SO many times - I still go for around 180-200g per day

Would 180-200g protein be likely to cause any sort of kidney damage? I drink LOTS of water so my opinion is no, but wanna see what others think

Think that's it for now. These have remained unanswered in my brain for some time, so help would be MUCH appreciated

[Jules Verne]

Originally Posted by Jimus Maximus

Can someone please help me out? I'd like to think that I've reserched these boards pretty well over time but there's a list of things I've either picked up here or just heard somewhere that confuse me.

Here's my list of head-doing Myths / non myths (you tell me)

Do you need carbs to help absorbtion of protein?
e.g What if I was cutting and had 3-4 meals of lean protein ONLY (plus 2 meals with carbs)?

Nuts - Good for your good fats right? Do nuts slow up absorbtion of protein?

Someone told me a human can only absorb 70-80g of protein per day. I have disagreed with this SO many times - I still go for around 180-200g per day

Would 180-200g protein be likely to cause any sort of kidney damage? I drink LOTS of water so my opinion is no, but wanna see what others think

Think that's it for now. These have remained unanswered in my brain for some time, so help would be MUCH appreciated

The only non-common sense one would be that I don't think you slow whey protein absorption very significantly by adding fats. Other proteins and meals in general, absolutely.

The answers to the rest is simple common sense IMO.

[Jimus Maximus]

No offence man, but that doesn't really answer much

What about the rest?

[-Aaron-]

Originally Posted by Jules Verne

The only non-common sense one would be that I don't think you slow whey protein absorption very significantly by adding fats. Other proteins and meals in general, absolutely.

The answers to the rest is simple common sense IMO.

Peanut Butter actually does slow whey absorbtion.

[mmg]

Originally Posted by Jimus Maximus

Do you need carbs to help absorbtion of protein?
e.g What if I was cutting and had 3-4 meals of lean protein ONLY (plus 2 meals with carbs)?

no, you dont really need carbs to absorb protein, but barbs help replenish glycogen stores, which is vital for energy and performance. after you exercise your glycogen stores need replenishment and until carbs are taken in, theny are restored very slowly (not good)! insulin is what pushs proteins (and fats) into cells. and you cant just cut using protein as your body will start using protein as the main energy source and you will lose muscle, i know you said you'll have carbs as well, but mk sure you get the ratios right when cutting.

Originally Posted by Jimus Maximus

Nuts - Good for your good fats right? Do nuts slow up absorbtion of protein?

fats slow protein absoption

Originally Posted by Jimus Maximus

Someone told me a human can only absorb 70-80g of protein per day. I have disagreed with this SO many times - I still go for around 180-200g per day

Debatable. At max you only need 2 grams of protein per pound of body weight when bulking

Originally Posted by Jimus Maximus

Would 180-200g protein be likely to cause any sort of kidney damage? I drink LOTS of water so my opinion is no, but wanna see what others think

Not sure, but dont think so.

[Jules Verne]

Originally Posted by -Aaron-

Peanut Butter actually does slow whey absorbtion.

Do have a study or other info? Is it because it is mostly a monounsaturated fat or some other quality? I've heard this, but the only studies and info I've seen basically compared different levels of milk fat, which doesn't seem to make much difference to whey absorption.

Don't have a medical background, so I don't know how different types of fats affect absorption, especially of something like whey.

[Bioteknik]

although did the study comparing the skim milk to whole fat milk measure the protein absorption rates, or measure the uptake of amino acids in the muscle?

[Jules Verne]

Originally Posted by Bioteknik

although did the study comparing the skim milk to whole fat milk measure the protein absorption rates, or measure the uptake of amino acids in the muscle?

I've seen a few. I think the main one I've seen on humans was blood amino acid profile.

Most of the work as far as I can tell has been done on cows, but I don't see how it would be that fundamentally different. If milk fat doesn't slow whey absorption in a cow, why would it in a human? In those cases the blood amino profile showed that it was the whey fraction being absorbed first. The casein fraction and fats were absorbed later.

I don't have the studies. Really I don't care to try to convince anyone - you might do a search on whatever you can get to. I might also be confusing terms - I definitely do not understand the digestive system.

I am interested in specifically why PB might significantly slow whey absorption though because I've seen it mentioned (mostly be people just repeating what they read), but occasionally by someone who actually might have some biology background.

I've never seen a study.

[mmg]

Originally Posted by Jules Verne

I am interested in specifically why PB might significantly slow whey absorption though because I've seen it mentioned (mostly be people just repeating what they read), but occasionally by someone who actually might have some biology background.

I've never seen a study.

I just presumed they mention PB as it has fats, but then again this section is filled with bro science!

Il have a look for some studies when i get time, and if i find anything worth reading il post it up.

[Jules Verne]

It was several years ago that I really looked into this. At that time everyone (on forums such as this) was saying not to mix whey with milk because the casein congeals and will slow the whey absorption.

After some reading I decided I did not think this was the case - the whey fraction is just too quickly 'absorbed' (not sure that is the right term). Then studies came out suggesting a mix of whey and casein might be even better under certain conditions and now everyone is 'OK' with having whey+milk PWO, or even advises it.

In addition more research and/or simply looking at some of the older studies showed that dairy is very insulinogenic, even when it contains fats. So at least some aminos (leucene) are getting rapidly absorbed, despite the casein and fats. Maybe it is only certain aminos, but I seem to remember that the cow studies measured the amino acid profile to try to see if it could be just certain aminos from the casein.

I'm not suggesting fat and/or casein has absolutely no impact, it just doesn't seem to have much with regard to increases in blood amino acid increase when ingesting whey. I don't think I've seen data for just whey + fats though. It always seems to be by itself or combined with casein as well.

[Dr. Horse]

Originally Posted by Jules Verne

Do have a study or other info? Is it because it is mostly a monounsaturated fat or some other quality? I've heard this, but the only studies and info I've seen basically compared different levels of milk fat, which doesn't seem to make much difference to whey absorption.

Don't have a medical background, so I don't know how different types of fats affect absorption, especially of something like whey.

Fat slows gastric emptying.

[lth]

Originally Posted by Mr. Horse

Fat slows gastric emptying.

are you an MD??? Just wondering, your posts always get my attention because their seems to be alot of knowledge behine them, as with Aaron as well.

[Dr. Horse]

Originally Posted by lth

are you an MD??? Just wondering, your posts always get my attention because their seems to be alot of knowledge behine them, as with Aaron as well.

No.

Watch out for aaron. His confidence exceeds his knowledge. (not that he isn't knowledgable)

[biglilly]

Originally Posted by Jules Verne

The only non-common sense one would be that I don't think you slow whey protein absorption very significantly by adding fats. Other proteins and meals in general, absolutely.

The answers to the rest is simple common sense IMO.

Common sense for hardcore bodybuilders but not common sense for everyone.

[Jules Verne]

Originally Posted by biglilly

Common sense for hardcore bodybuilders but not common sense for everyone.

Do you need carbs to help absorbtion of protein?

If you couldn't effectively digest protein without carbs, how would people,on keto survive when 1/2 their calorie intake or more is protein? I think you might notice if you suddenly needed to eat 50% more fat to maintain weight.

I guess what is not necessarily obvious is whether carbs might help protein absorption. But 'need'? I think that's pretty obvious.


Someone told me a human can only absorb 70-80g of protein per day.

Again, it this was true, you you not think people would notice that they seem to be able to swap 100g of carbs for 100g of protein and suddenly be in a 400kcal deficit. Never mind what your stools would look like. How many people here are eating more than 200g/day. A lot. Many consume 300g or more. How many people count calories. Enough to know that most gets absorbed.

That's without going to any medical/biology textbooks or asking anyone with that background about the digestive process.

Would 180-200g protein be likely to cause any sort of kidney damage?

Again, even without citing any studies. If this were true, how many of us would have no kidneys left? Nearly everyone in the over35 section for sure. Also if it were that easy to damage your kidneys, how would the inuit and Massi (or other peoples that eat a good portion of their calories from meat) survive? 80g is a medium restaurant steak. If more than ~twice that was really harmful do you really think the government would do and say nothing? How ever many conspiracy theories one dreams up, the implications would be quite staggering. The FDA guidelines might be 50-80g/day, but how many people eat a load of meat? Sure people do get kidney problems (not necessarily from excess protein) but it's not exactly an epidemic.



So, let me ask, what is really unobvious? I've taken the time to post the above, I'm not trying just to be a dick, I'm actually interested in why you think any of those questions might have a different answer. I might learn something. Learning is always good.