The Blood Type Diet Archives Volume 13
A further note on soy and cancer.
Posted By: Stephen(A+)
In Response To: Re: Soy, Type A, and Final Vocabularies (Marilyn Lloyd)
What Peter says is true. Certainly the brain atrophy I believe is blood type specific because the number of individuals in the study (23% I think) was the same number as the individuals with B type blood (the post is on a lower thread). I also agree with Peter that Tyrosine Kinase inhibition is not related to brain atrophy. I believe it is soy's ability to act as a Trypsin Inhibitor, (because of its Raffinose and Stachyose content). Trypsin inhibits Amyloid-Beta-Protein Precursor (APP - a substance implicated in the development of Alzheimer’s Disease). Thus when trypsin is inhibited (by soy) APP is formed and thus Alzheimer's risk is increased.
Please read on because I then tell you the good news.
Although this is true if you heat, or ferment soy, its ability to inhibit trypsin disapears. Also, I believe A's have a greater trypsin secretion (I'll have to do the searches on that one though). This is evident due to A's greater ability to digest soy.
As your concern is of cancer and soy, read below and put your mind at ease!!
Barnes, S., et al. Rationale for the use of genistein-containing soy matrices in chemoprevention trials for breast and prostate cancer. J Cell Biochem. 22S:181-187, 1995.
· Troll, W., et al. Soybean diet lowers breast tumor incidence in irradiated rats. Carcinogenesis. 1:469-472, 1980.
Societies with high consumption of soybeans - especially in the form of fermented soybean foods -
· Zheng, W., et al. Urinary excretion of isoflavonoids and the risk of breast cancer. Cancer Epidemiol Biomark Prev. 8:35-40, 1999.
The incidence of breast cancer is much lower in Asian countries than in Europe and the United States. A possible explanation is that Asian women have a much higher intake of soybean foods than Caucasian women. Some studies have suggested an inhibitory effect of soybean isoflavonoids on the development of breast cancer.
The authors concluded that this study supports the hypothesis that a high intake of soybean foods may reduce the risk of breast cancer.
Messages in This Thread
Marilyn Lloyd -- Wednesday, 26 January 2000, at 2:52 p.m.
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