The Truth About Soy Protein? (open discussion)

[tnubs]

I usually stay away from soy but I did drink half a gallon of soy milk today, can't even remember the last time I've touched anything soy related. So subbed. Ill pop a cap of erase to undo the damage.

[djbombsquad]

I take soy protein and have no labido issues. If any thing the opposite I'm more Horneyer than ever.

[mumbles12]

probs on good qulaity soy, I dont personally believe it has bad effect on everybody, I think its like the milk/gluten intolerance think where it just affects certain people..

[JoeySon]

Soy isoflavones are anti-androgenic. They impair Leydig cell function, androgen receptor sensitivity and erectile function (albeit in rodents) but there is sufficient research on human males showing that even a modest consumption (50g a day) will reduce testos levels and has also been shown to reduce androgen receptor expression.

Even besides that soy is very difficult to digest, a common allergen and comes with the unnecessary estrogen baggage. So my question is with the availability of milk and egg proteins, why bother with soy?

Did you have a link to this? I think a lot of people ingest soy and don't even realize it as its an ingredient in a lot of fairly random foods like salad dressing, baked goods, different ice creams and desserts, protein bars, canned meats, and a couple other different foods.

[JoeySon]

I'm considering doing an expierence on myself..the gainer "up your mass" really intrigues me as it is seemingly very popular yet the first protein listed in the ingredients is soy.

I was considering buying three tubs (45 servings) and consuming one serving a day for 45 days. It doesn't say exactly how much soy it contains in relation to the total protein content because it does also contain whey and egg protein but I'm assuming at least 20 grams. I would get pre and post bloodwork and check my estro levels.

Not sure if this would even be worthwhile but there's so many conflicting reports out there.

[tnubs]

I'm considering doing an expierence on myself..the gainer "up your mass" really intrigues me as it is seemingly very popular yet the first protein listed in the ingredients is soy.

I was considering buying three tubs (45 servings) and consuming one serving a day for 45 days. It doesn't say exactly how much soy it contains in relation to the total protein content because it does also contain whey and egg protein but I'm assuming at least 20 grams. I would get pre and post bloodwork and check my estro levels.

Not sure if this would even be worthwhile but there's so many conflicting reports out there.

It could be binding to the receptor but that doesnt mean its going to show up on a hormone panel as estrogen. Id think it would be better to get your testosterone level checked. If its having the effect of estrogen (which is very suppressive to testosterone levels) you could just test your before and after test levels to indirectly measure the effect.

Edit to add: That was my 3000th post! Yayy!

[JudoJosh]

Relavent - http://jn.nutrition.org/content/126/1/43.long

[tnubs]

Relavent - http://jn.nutrition.org/content/126/1/43.long

ABSTRACT Although the beneficial effects of dietary
soybean protein compared with animal proteins on
plasma lipids, lipoproteins and atherosclerosis have
been known for about 50 years, it has been uncertain
whether these effects are due to its amino acid con
centrations or other components in soybeans. To assess
the effect of soybean protein's alcohol-extractable
components (including the isoflavonic phytoestrogens
genistein and daidzein) on plasma lipid and lipoprotein
concentrations and to establish its lack of effect on the
reproductive system, we fed 27 peripubertal male and
female rhesus monkeys moderately atherogenic diets
in which the source of dietary protein was a soy isolate
(20% by weight), either containing phytoestrogens (also
termed isoflavones) or with the phytoestrogens re
moved by alcohol extraction. The study was a crossover
design with each period lasting for 6 mo. The phytoestrogen-intact soy protein (compared with the alcoholextracted soy protein) had favorable effects on plasma
lipid and lipoprotein concentrations, specifically by sig
nificantly reducing LDL+ VLDLcholesterol concentra
tions in both males and females (~30-40% lower),
significantly increasing high density lipoprotein cho
lesterol (HDLC) concentrations for females (~15%
higher) and significantly lowering total plasma choles
terol (TPC):HDLC ratios (~20% lower for males and
50% lower for females). The phytoestrogens had no
adverse effects on the reproductive systems of either
the males or females, as evaluated by reproductive
hormone concentrations and organ weights at necropsy.
Thus, the isoflavones in soy protein improve cardio
vascular disease risk factors without apparent delete
rious effects on the reproductive system of peripubertal
rhesus monkeys. J. Nutr. 126: 43-50, 1996.

[hossjob]

I'm considering doing an expierence on myself..the gainer "up your mass" really intrigues me as it is seemingly very popular yet the first protein listed in the ingredients is soy.

I was considering buying three tubs (45 servings) and consuming one serving a day for 45 days. It doesn't say exactly how much soy it contains in relation to the total protein content because it does also contain whey and egg protein but I'm assuming at least 20 grams. I would get pre and post bloodwork and check my estro levels.

Not sure if this would even be worthwhile but there's so many conflicting reports out there.

Not that I mean anything, but I'd be seriously interested in how yoru blood work turns out. Probably impossible to do, unless you are a lab tech or work at a lab, but I think it'd be interesting to see how soy protein effects blood work acutely as well (ie pre ingestion and post ingestion at 30-60-90 minutes and even through the day), on top of long term use (as is after 45 days).

[WPChickDiesel]

I am with the argument of the eastern cultures who's diets are almost exclusively riddled with soy! And yes, they are in better health than us Americans! Ive read the it helps reduce risk of colon cancers and helps reduce risks of heart disease too. And the fact that it is a plant phytosterol means its less likely to cause an increase in estrogen levels. Weight gain and high lipid levels cause a raise in estrogen because they greatly effect healthy testosterone production and increase cortisol levels making fertility and reproductive health a challenge. It was not specific to soy....

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[jswain34]

I am with the argument of the eastern cultures who's diets are almost exclusively riddled with soy! And yes, they are in better health than us Americans! Ive read the it helps reduce risk of colon cancers and helps reduce risks of heart disease too. And the fact that it is a plant phytosterol means its less likely to cause an increase in estrogen levels. Weight gain and high lipid levels cause a raise in estrogen because they greatly effect healthy testosterone production and increase cortisol levels making fertility and reproductive health a challenge. It was not specific to soy....

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I personally don't think that them eating soy is the reason they're healthier. It is most likely because of the other sh*t americans eat (mcdonalds, high fructose corn syrup in everything, refined sugars in everything, sugary beverages, etc) and they are not consuming, not necessarily the other way around.

[JoeySon]

Not that I mean anything, but I'd be seriously interested in how yoru blood work turns out. Probably impossible to do, unless you are a lab tech or work at a lab, but I think it'd be interesting to see how soy protein effects blood work acutely as well (ie pre ingestion and post ingestion at 30-60-90 minutes and even through the day), on top of long term use (as is after 45 days).

yea I don't live in a lab lol and realistically it would have to be after the holidays as I'm leaving town for a few weeks

[blueice]

Soy beans are very rich in isoflavones, which fight heart disease by working in combination with soy protein; they improve the balance of cholesterol in the blood as it makes your blood less likely to clot.