View Full Version : Is soy bad?

01-30-2007, 06:05 PM
This protein bar I bought has about 20g of nut/soy protein in it. Its of course not a great source of protein but I NEED to get more calories in my diet and this seems like the best way. The box was only 5 bucks, it was a bargain.

Ive heard bad stuff about soy, but how bad is it?

01-30-2007, 07:32 PM
Soy reduces risk of cancer for females, and raises the risk for prostate cancer.

I try to avoid it. I have no idea how much is too much.

Edit: Food for thought,


Slim Schaedle
01-30-2007, 08:05 PM
For what it's worth

One of my professors is included in the authors...............

AUTHOR: Arjmandi BH; Getlinger MJ; Goyal NV; Alekel L; Hasler CM; Juma S; Drum ML; Hollis BW; Kukreja SC
ADDRESS: Department of Nutritional Sciences, Oklahoma State University, Stillwater 74078-6141, USA.
TITLE: Role of soy protein with normal or reduced isoflavone content in reversing bone loss induced by ovarian hormone deficiency in rats.
SOURCE: Am J Clin Nutr (3EY), 1998 Dec; 68 (6 Suppl): 1358S-1363S
Soy protein, a rich source of isoflavones, fed immediately after an ovariectomy prevents bone loss in rats. Reports of the effectiveness of natural and synthetic isoflavones in preventing or treating osteoporosis led us to examine the effect of soy protein in reversing established bone loss. Seventy-two 95-d-old female Sprague-Dawley rats were assigned to 6 groups. The rats were either sham operated (SHAM; 2 groups) or ovariectomized (OVX; 4 groups) and then fed a casein-based, semipurified diet. Thirty-five days after surgery, 1 SHAM and 1 OVX group were killed to examine the occurrence of bone loss. Thereafter, the other SHAM and 1 OVX groups continued to receive the casein-based diet. Whereas the remaining 2 OVX groups received diets in which casein was replaced by soy protein with normal (OVX+SOY) or reduced (OVX+SOY-) isoflavone content for 65 days. The OVX control group had significantly lower femoral and fourth lumbar vertebral bone densities than the SHAM group. Femoral density of rats fed SOY or SOY- diets were not significantly different from SHAM or OVX controls. This suggests a slight reversal of cortical bone loss that may be partially due to higher femoral insulin-like growth factor I mRNA transcripts resulting from both the SOY and SOY- diets. The ovariectomy- induced increases in indexes of bone turnover were not ameliorated by either of the soy diets, suggesting that any positive effect of soy was achieved through enhanced bone formation rather than slowed bone resorption. Long-term consumption of soy or its isoflavones may be needed to produce small but continued increments in bone mass.

Slim Schaedle
01-30-2007, 08:11 PM