Is there a limit to the amount of protein you can process at a time?
(14 posts) (10 voices)-
I keep hearing about this... a lot of mixed numbers too, from no more than 30 to no more than 100 grams...
Any info?
Posted 5 months ago # -
Good question. Really good question...
Posted 5 months ago # -
If it really is 30, than it makes a lot of sense to eat 5 small meals a day, rather than 2 or 3. That's what I have been doing for a while. 5 X 30 = 150 grams of protein, exactly what I need...
Posted 5 months ago # -
I would say it depends on your age & sex (testosterone levels), bodyweight/bf% (how much you need for general living) and the amount of strength training you do (for tissue repair/growth)...
Posted 5 months ago # -
Never heard of a limit to the amount your body can process. Every individual would have different protein requirements, so applying an across the board number would not make sense. Each individual even similar weighted could have different protein needs based on LBM, activity level, and type of training. It also seems to reason that your body would adapt to more efficiently utilize the extra protein that is ingested above maintenance levels.
Here's a small study on Elderly women that suggest a pulse single sitting intake off all their required protein was more efficiently absorbed and retained than a spread over 4 meals intake.
Posted 5 months ago # -
Nice, thanks. Bodybuilders on the internet do tend to come up with some really strange ideas! Ughh
Posted 5 months ago # -
probably yes, but as arthurb999 pointed out there are so many factors...plus if you eat a big steak, all that protein isnt immediately available. it still has to be digested. and that happens slowly so only smaller amounts of the whole are actually made available at any given time
Posted 5 months ago # -
It doesnt make sense from an evolutionary perspective. Imagine Grok, not eating anything for a day or two, then when he finally makes a kill, he can only absorv 30grams of protein? Dont think so, i think the body can absorv almost everything you give it no matter if its one meal or five.
Posted 5 months ago # -
Ah, I guess they were talking about the protein shakes then. Since they're absorbed really fast, it would make sense that something like 60 grams would not be all processed...
Posted 5 months ago # -
To quote Cordain, using the known maximal rates of urea synthesis [65 mg N/h - kg (body weight )], “The mean maximal protein intake for the average weight U.S. male (189.4 lbs ) is then 270 g/day (range 233-322 g/day), and for an average weight female (162.8 lbs ), 246 g/day (range 208-288 g/day).”
The above is from responses to the second installment of potato series from Don at his excellent Primal Wisdom Blog.
https://www.blogger.com/comment.g?blogID=3407208789320867846&postID=3848753971760192331So yes there is a limit on how much you protein you can consume in a day. Whey protein shakes may be a problem if you consume more than you can process immediately. For natural foods, the body will control the intake.
Posted 5 months ago # -
I've heard anything from 20-40 grams of protein at a given time. Now, this totally depends on a few factors:
-type of protein
-food content of the meal
-size of person
-digestive health of person
-fullness of amino acid pool (meaning have you already consumed a meal that day? ect...)
-lean body mass (some people actually say more muscle less protein, because the efficiency of absorbance goes up)My point is, there are so many different factors out there, don't be on the extreme of either side. Don't go downing three scoops of whey at a meal, but then again, 1/4 a scoop isn't much.
Posted 5 months ago # -
Would it be reasonable to assume that if you eat a large amount of protein, but a large amount of fat to go with it, the protein is absorbed more gradually so it's not such an issue? So the body would be able to get more use out of, say, a fatty rib eye steak containing 60g of protein than 60g of protein from a few scoops of whey? I've been wondering about this myself, since packing in a load of protein in one meal a few times a day is a lot easier than the whole one meal every 3 hours thing.
Posted 5 months ago # -
I read somewhere that something called an "Ileal brake" slows down food passage through our system in response to our feeding frequency a meal size. Wouldn't that give our bodies more time to digest ANY amount of protein?
Posted 5 months ago # -
It would be safe to assume that different sources of protein would have different rates of digestion. Whey protein has a low molecular weight compared to steak, meaning it gets digested much quicker. Once the amino acid pool is full and it's not being used for anything, it gets excreted.
Now, there is another problem with excess protein or protein in general that in my mind is bigger then getting too much, gluconeogenesis. This is a normal process in the body, so nothing to really get scared about. This process converts protein into glucose. I've read about 60% of excess protein goes through this process.
My overall point is, keep the protein at reasonable amounts. 3 scoops of whey might sound like an anabolic dreamland, but it's really not. I don't count, but I usually end up somewhere around 150 grams. Heavier people might need a little more.
Posted 5 months ago #
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