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napsgear
genezapharmateuticals
domestic-supply
puritysourcelabs
RESEARCHSARMSUGFREAKeudomestic
napsgeargenezapharmateuticals domestic-supplypuritysourcelabsRESEARCHSARMSUGFREAKeudomestic

Soy Milk protien

CO B-man

New member
I keep hearing two differing opinons on soy protien. Is it good for you bad for you or so/so. I real like soymilk and would prefer drinking that over regular milk and it has twice the protien but I have heard soy is not as good too. So I am confused who is the diet guru that will set me straight on this?
 
Admittedly I'm anti-soy so I won't respond to this - nor would I consider myself a diet guru.

But if I recall they have similiar protein but soy milk has more amino acids and manganese while cow's has more calcium.
 
From an article found in t-nation mag called Lean Eatin- PT.I:

Finally, Lohrke et. al. (2001) showed that growing pigs fed a diet consisting of soy as the only protein source had lower body weights, amino acid imbalances, increased cortisol levels, and increased muscle breakdown. The casein-fed pigs grew normally. This indicates that a diet containing exclusively a low quality protein (soy in this case) may interfere with normal growth and development.

And in the summary:

Soy still sucks as a primary protein source

hth
 
Old school BBers used protein powders mostly consisting of soy protein. Although they didn't abuse the powders like we do today, thats what they used when they did.

Also, its high isoflavone content is what could be problematic. If you eat a mixed diet with some protein coming from a natural soy source (ie.. NOT isoflavone capsules), you are fine. It is actually beneficial because its good to have a broad spectrum of protein sources including meat, eggs, whey, and things that dont fall into those categories (legumes, soy, veg etc..).
 
Agreed that a varied diet is beneficial. Anything in moderation won't be bad for you. As a primary source, though, it's been demonstrated to be inferior. So in CO B-man's case it depends on how much milk he drinks. Anything more than a glass or two ed and he would be dealing himself somewhat of a setback.
 
Soy protein is a very cheap protein to manufacture, in comparison to whey.

As for the quality, there's something intrinsical here: Whey is animal-origin, while soy is notl. We know the old afage about non-animal protein being incomplete... then again, not all animal-based proteins are hight quality (colagen, for example is also animal and cheap).

If you can afford (both in money, taste and variety) to eat more real food and whey to COMPLEMENT your protein intake, you wouldn't be in a bad position.

If you want to mix things up a bit, change to soy for a number of days, the most common mistake we all make is trying to have absolutes and say "I will only use soy or whey or this or that". Variety is key here, both for results and your sanity.
 
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