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Whey Man 08-06-2006 07:24 PM

Soy protein. Finding the balance between just enough and too much.
 
People always talk about the healthy benefits, including lowering cholesterol, helps reduce the risk of heart related diseases, etc. But people also talk about the negative...estrogen! What man wants estrogen in their system?

With that said, does anyone have any scientific theories and/or evidence as to how much soy protein would be beneficial and how mch would be detremental?

aricho 08-07-2006 09:44 AM

Re: Soy protein. Finding the balance between just enough and too much.
 
i heard that the eastrogen thing is a myth

TheShanMan 08-07-2006 11:47 AM

Re: Soy protein. Finding the balance between just enough and too much.
 
Well soy isn't a high quality protein so from that standpoint I would keep intake pretty low. Personally I don't intentionally include any soy in my diet, but I'm sure I get a little here and there.

Rain_Man 08-31-2006 06:03 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
I have to say I Have soy on a very regular basis. in fact i nearly live on it. It balances hormones.

William Wallace 09-22-2006 04:36 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
According to this article, soy helps to block estrogen reception and is a high quality protein source.

http://www.timinvermont.com/fitness/soyvswhy.htm

*Sigh* why can't this be simple?

Rain_Man 09-22-2006 05:12 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
about soya, is it really good, I personally feel when i drink soy milk or have soy beans, or have a soya protein drink i am giving myself something good & healthy. however when i drink whey or milk & egg protein I don't feel as good. But thats my opinion. I read the article about soy from willIAM wallace there and found it excellent. I would be keen to learn about the health benefits of taking whey. But i may consider switching to soy protein.

COMMENTS WELCOME.

William Wallace 09-22-2006 08:26 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
Bursting my own bubble, but now I have a few issues with the article.

From the article:
[ QUOTE ]

Scoring Protein by BV is the first area where the bodybuilding public is being deceived and manipulated. Elite Fitness has researched this topic rather thoroughly and has talked to experts in the field who work for the actual companies which manufacture and process the raw, bulk products. I have questioned several experts as to the quality of the various proteins and have found a few interesting facts. First and foremost, BV and PER (protein efficiency ratio) are OUTDATED. The newest and most accurate measurement of a protein's quality for a HUMAN is the PDCAAS--Protein Digestibility Corrected Amino Acid Score. A mouthful I know, and yet it is the industry standard.


[/ QUOTE ]

It says here that Biological Value (BV) and Protein Efficiency Ratio (PER) are outdated methods for measuring protein effectiveness, but it doesn't say why. Just because there is a new test available doesn't mean the old test is necessarily invalid. So I did a little research to see why they may be outdated.

I found legitimate reason to say that PER is outdated because the original scale was based on protein absorption by rats, not by humans. BV on the other hand measures nitrogen uptake versus nitrogen excretion. With this scale, whey has the highest value. Opponents of whey (according to Wikipedia) argue that whey's digestion is so fast that most of it is probably converted in the liver to carbohydrates and is used for energy production not protein synthesis.

My problem with this is that most bodybuilders don't take whey on an empty stomach but as a supplement to their normal meals, thus slowing that absorption. Most of the diets I see posted on the forums show people usually taking whey with oatmeal or natty peanut butter in a shake.

I somewhat feel that this new PDCAAS score was invented with the goal of making Soy more marketable. Soy's BV value is very low. The methodology was accepted by the FDA in the early 90's - right around the time that the Soy craze hit the US. It's almost as if TPTB said "We can't win at this game, so let's change the game." I'm not much of a conspiracy theorist, but ...

To the bodybuilder, positive nitrogen balance is the most important factor. FWIW, I'm sticking with the BV approach.

kokokolo 09-22-2006 08:44 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
does soy protein powder taste ok?

does it taste as good as whey? or better?

Rain_Man 09-23-2006 06:12 AM

Re: Soy protein. Finding the balance between just enough and too much.
 
plain soy powder tastes rank

XenoWang 09-26-2006 08:41 PM

Re: Soy protein. Finding the balance between just enough and too much.
 
Tofu can be ridiculously tasty when prepared well though.


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