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Thread: whats the deal with soymilk

  1. #1
    Wannabebig Member
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    whats the deal with soymilk

    I heard that soy milk reduces test is that possible. I stopped drinking regular milk along time ago and have only been drinking soy milk ever since it has a ton of protien and I believe it to be much better for you but I read this artical on the fact that it lowers your test does anyone know about this?

  2. #2
    C.S.C.S. ddegroff's Avatar
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    We'll I'm not sure about lowering your test levels but I do know that it raises your estrogen levels. Personally if i'm gonna drink milk then I'm gonna drink the real thing.

  3. #3
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    Quote Originally Posted by modpodcrazy
    I heard that soy milk reduces test is that possible. I stopped drinking regular milk along time ago and have only been drinking soy milk ever since it has a ton of protien and I believe it to be much better for you but I read this artical on the fact that it lowers your test does anyone know about this?
    the bioavailability of the protein in your soy milk is a lot lower than that the protein in actual milk. so is soy bad? thats like asking if milk is bad. they are both hotly contested and no one really knows for sure about either. they are probably both fine, but i have chosen milk over soy. (not to say that you have to choose)

  4. #4
    Senior Member TheGimp's Avatar
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    Quote Originally Posted by ddegroff
    We'll I'm not sure about lowering your test levels but I do know that it raises your estrogen levels.
    These studies would suggest otherwise:

    http://www.ncbi.nlm.nih.gov/entrez/q..._uids=12094627

    Soy milk intake in relation to serum sex hormone levels in British men.

    Allen NE, Appleby PN, Davey GK, Key TJ.

    Cancer Research UK Epidemiology Unit, University of Oxford, Oxford OX2 6HE, UK. naomi.allen@cancer.org.uk

    Soy beans contain high levels of the isoflavones genistein and daidzein and their glycosides and have been implicated in the prevention of prostate cancer, possibly via their effects on sex hormone metabolism. The aim of this study was to assess the relation between dietary soy intake and sex hormone levels in a cross-sectional analysis of 696 men with a wide range of soy intakes. Soy milk intake was measured using a validated semiquantitative food frequency questionnaire, and serum hormone concentrations were measured by immunoassay. Multiple regression was used to investigate the association between soy milk intake, an index of isoflavone intake, and hormone levels after adjustment for pertinent confounders. Soy milk intake was not associated with serum concentrations of testosterone, free testosterone, androstanediol glucuronide, sex hormone-binding globulin, or luteinizing hormone. These results suggest that soy milk intake, as a marker of isoflavone intake, is not associated with serum sex hormone concentrations among free-living Western men.
    http://www.ncbi.nlm.nih.gov/entrez/q..._uids=11880595

    Hormonal effects of soy in premenopausal women and men.

    Kurzer MS.

    Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA. mkurzer@umn.edu

    Over the past few years, there has been increasing interest in the possible hormonal effects of soy and soy isoflavone consumption in both women and men. Soy consumption has been suggested to exert potentially cancer-preventive effects in premenopausal women, such as increased menstrual cycle length and sex hormone-binding globulin levels and decreased estrogen levels. There has been some concern that consumption of phytoestrogens might exert adverse effects on men's fertility, such as lowered testosterone levels and semen quality. ... Only three intervention studies reported hormonal effects of soy isoflavones in men. These recent studies in men consuming soyfoods or supplements containing 40--70 mg/d of soy isoflavones showed few effects on plasma hormones or semen quality. These data do not support concerns about effects on reproductive hormones and semen quality.
    http://www.ncbi.nlm.nih.gov/entrez/q..._uids=11767208

    Effects of soy protein on levels of remnant-like particles cholesterol and vitamin E in healthy men.

    Higashi K, Abata S, Iwamoto N, Ogura M, Yama****a T, Ishikawa O, Ohslzu F, Nakamura H.

    First Department of Internal Medicine, National Defense Medical College, Tokorozawa, Saitama, Japan.

    We determined the effects of soy protein isolate (SPI) intake on remnant-like particles (RLP), lipolytic enzymes, lipid transfer protein, transaminases, sex hormones, iron, calcium, and vitamin E in healthy men. In the first randomized, crossover experiment, 14 men were given either 20 g per day of SPI or nothing (control) for each 4-week segment. After 3 weeks of SPI intake, TG and RLP cholesterol levels were significantly lower than the baseline by 13.4% (p<0.05) and 9.8% (p<0.05), respectively. However, no significant change was found in total and low-density lipoprotein (LDL) cholesterol levels or the activities of lipoprotein lipase, hepatic lipase, cholesteryl ester transfer protein, and lecithin cholesterol acyltransferase. Although the levels of transaminases. testosterone, iron, and calcium did not change, the vitamin E level was reduced from the baseline by 9.7%, a significant decrease (p<0.01)...
    http://www.ncbi.nlm.nih.gov/entrez/q..._uids=11303585

    Effect of soymilk consumption on serum estrogen and androgen concentrations in Japanese men.

    Nagata C, Takatsuka N, Shimizu H, Hayashi H, Akamatsu T, Murase K.

    Department of Public Health, Gifu University School of Medicine, Japan.

    ... We conducted a randomized dietary intervention study to determine the effects of soy consumption on serum levels of steroid hormones in men. Thirty-five men were randomly assigned to either a soymilk-supplemented group or a control group. The men in the soy-supplemented group were asked to consume 400 ml of soymilk daily for 8 weeks. The men in the control group maintained their usual diet. Blood samples were obtained just before the initiation of the dietary period and thereafter every two weeks for 12 weeks. Changes in hormone concentrations were analyzed and compared between the two groups using the mixed linear regression model against weeks from the start of the dietary period. The mean (SD) soymilk intake estimated from dietary records during the dietary study period was 342.9 (SD, 74.2) ml in the soymilk-supplemented group. There was a significant difference between the two groups in terms of changes in serum estrone concentrations, which tended to decrease in the soy-supplemented group and increase in the control group over time. None of the other hormones measured (estradiol, total and free-testosterone, or sex hormone-binding globulin) showed any statistical difference between the two groups in terms of patterns of change. The results of the study indicate that soymilk consumption may modify circulating estrone concentrations in men.
    http://www.ncbi.nlm.nih.gov/entrez/q..._uids=10798211

    Inverse association of soy product intake with serum androgen and estrogen concentrations in Japanese men.

    Nagata C, Inaba S, Kawakami N, Kakizoe T, Shimizu H.

    Department of Public Health, Gifu University School of Medicine, Japan.

    The cross-sectional relationships of soy product intake and serum testosterone, estrone, estradiol, sex hormone-binding globulin, and dihydrotestosterone were examined in 69 Japanese men. Soy product intake was estimated from a semiquantitative food frequency questionnaire. Serum estradiol concentration was significantly inversely correlated with soy product intake (r = -0.32, p = 0.009), and serum estrone concentration was nonsignificantly inversely correlated with soy product intake (r = -0.24, p = 0.05) after controlling for age, body mass index, smoking status, and ethanol intake. Total and free testosterone concentrations were inversely correlated with soy product intake after controlling for the covariates, but these correlations were of border line significance (r = -0.25, p = 0.05 and r = -0.25, p = 0.06, respectively). Similar correlations were observed for these hormones with isoflavone intake from soy products. The data suggest that soy product intake may be associated with the endogenous hormone levels in Japanese men.
    Summary: Soy will most likely not negatively impact your testosterone levels. The latter two studies even suggest that soy consumption could reduce estrogen levels in men.

    Quote Originally Posted by jack_of_all
    the bioavailability of the protein in your soy milk is a lot lower than that the protein in actual milk
    I would not describe a PDCAAS of 94 vs 100 as a lot lower.


    Some advantages of soy milk vs cow juice would be:

    Virtually no carbs (great for you ketogenic dieters out there)

    Superior lipid profile

    Different amino acid profile (when taking into account, for instance, mixing it with whey powder)
    Last edited by TheGimp; 01-08-2006 at 11:09 AM.

  5. #5
    Wannabebig Member
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    wow thats alot thegimp got the hard core facts i tried to search int he forms but i def didn't find that information guess i did it wrong anyway thanks alot

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