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View Full Version : How much protein can be metabolized in one meal?

PianomanRichie
12-10-2006, 12:34 PM
Anyone know definitively?

sportyhp
12-10-2006, 12:37 PM
i think it depends on your weight and how many grams of protein you need per pound of bodyweight (i.e. someone bigger would need more protein vs. someone of a lesser weight). plus, it depends on how many meals you eat:
(from this site):
"The standard equation is easy: take your weight in pounds and multiply it with 1 or 1.5, so that's 200-300 grams of protein daily for a 200 pound bodybuilder. Now divide this by the number of meals you take in a day. If you eat 5 meals, that comes down to 40-60 grams of protein per meal. If you eat 8 meals that's 25-37 grams per meal."
....BUT the max amount that a body could really metabolize, im not totally sure if it's the same for every human or not.

rizoN17
12-10-2006, 12:46 PM
i think it depends on your weight and how many grams of protein you need per pound of bodyweight (i.e. someone bigger would need more protein vs. someone of a lesser weight). plus, it depends on how many meals you eat:
(from this site):
"The standard equation is easy: take your weight in pounds and multiply it with 1 or 1.5, so that's 200-300 grams of protein daily for a 200 pound bodybuilder. Now divide this by the number of meals you take in a day. If you eat 5 meals, that comes down to 40-60 grams of protein per meal. If you eat 8 meals that's 25-37 grams per meal."
....BUT the max amount that a body could really metabolize, im not totally sure if it's the same for every human or not.

She's right, there's many variables. The type of protein, size of the person, last time protein has been taken in, if it's around a workout/time of stress, etc.

efini84
12-10-2006, 12:48 PM
http://www.bodybuilding.com/fun/hst3.htm

Myth #2:

You can only assimilate 30 grams of protein at one sitting.

Fact #2:

The body has the ability to digest and assimilate much more than 30 grams of protein from a single meal.

Speaking of high intakes of protein, people have been perpetuating the myth that you can only assimilate about 30 grams of protein at a time, making protein meals any greater than a 6 oz. chicken breast a waste. This is anything but true. For example, the digestibility of meat (i.e. beef, poultry, pork and fish) is about 97% efficient. If you eat 25 grams of beef, you will absorb into the blood stream 97% of the protein in that piece of meat.

If, on the other hand, you eat a 10 oz steak containing about 60 grams of protein, you will again digest and absorb 97% of the protein. If you could only assimilate 30 grams of protein at a time, why would researchers be using in excess of 40 grams of protein to stimulate muscle growth?1

Critics of high protein intakes may try to point out that increased protein intake only leads to increased protein oxidation. This is true, nevertheless, some researchers speculate that this increase in protein oxidation following high protein intakes may initiate something they call the "anabolic drive".13

The anabolic drive is characterized by hyperaminoacidemia, an increase in both protein synthesis and breakdown with an overall positive nitrogen balance. In animals, there is a correspondent increase in anabolic hormones such as IGF-1 and GH. Though this response is difficult to identify in humans, an increase in lean tissue accretion does occur with exaggerated protein intakes.14,15

The take home message is that, if you are going to maximize muscle growth you have to minimize muscle loss, and maximize protein synthesis. Research clearly shows this is accomplished with heavy training, adequate calories, and very importantly high protein consumption. This means that meals containing more than 30 grams of protein will be the norm. Not to worry, all that protein will certainly be used effectively by the body.

Environ
12-10-2006, 01:32 PM
It impossible to say. It's widelty accepted that between 30 and 70 grams may be metabolised in a single meal (not very helpful is is :) ).

The amount of protein that you can metabolise depends on numerous factors, including your own lean body mass, your activity level, your environment, your lifestyle, your need for amino acids at that particular time, genetics.

The only way to figure out how many grams you can metabolise at a sitting is to test your nitrogen balance. There was a product called Nitrostix available a while back to help with this, but it was withdrawn from the market. I don't think it has been replaced either. So, only a doctor could do it for you now through urine tests.

Mtguy8787
12-10-2006, 02:28 PM
IT all depends on the type of protein you are eating, your body's current requirements, your body size, how you eat it, and what kind of shape your digestive system is.

IF you eat a big steak, and swallow it in chunks, alot of it will not be digested.

ANDYMAYNE
09-22-2012, 11:56 AM
IF you eat a big steak, and swallow it in chunks, alot of it will not be digested.

wtf

psychodiver9
09-22-2012, 12:10 PM
wtf

Solid 6 year bump.

Yoy0
09-22-2012, 12:12 PM

Just for the record, guys.

YOU WILL DIGEST ALL AMOUNTS OF PROTEINS EVEN IN ONE SITTING, PERIOD.

Geoloop
09-22-2012, 12:31 PM