Revival Soy Doctor
I'm a man and I eat alot of soy and tofu. Will it make me grow breasts? Will it enlarge my "man breasts"?
Thank you for your question.
Before we get started, please read the following: We do not give medical advice. We provide nutritional information regarding Revival Soy products and information available in the public domain for the uses of soy. We advise you to discuss your personal medical issues with your physician. I hope our information will be helpful to you.
Will soy “feminize” men?
Does Revival harm men in any way?
There is no scienfific evidence that soy “feminizes” men. Asian men consume large amounts of soy daily without side-effects and absolutely no "feminization". Soy isoflavones have not been shown to lower testosterone levels or sex drive.
Soy consumption doesn’t negatively affect fertility, testosterone levels, or sperm quality. A recent medical review found that soy studies examining this important area do "...not support concerns about effects on reproductive hormones or semen quality." (1)
Reference 1: J Nutr 2002 Mar;132(3):570S-3S. Hormonal effects of soy in premenopausal women and men. Kurzer MS.
Soy protein is not known to increase breast size.
How much soy should I consume?
How much Revival do I have to eat to see results?
Eating enough soy protein and soy isoflavones is essential to obtain soy’s full benefits. An international panel of leading soy researchers determined that 100 to 160 milligrams of soy isoflavones per day are likely needed to achieve all of the potential benefits of soy isoflavones. The FDA states that 25 grams of soy protein per day, with a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. The American Heart Association recommends 50 grams of soy protein per day.
We have an excellent summary of this at http://www.revivalsoy.com/whysoy/article.html?article=amount&pid=3000
How soon will I see results?
Our suggested usage is to enjoy 1 naturally-concentrated (6x) Revival bar or shake per day. Use Revival's baked soy chips, soy pasta, soy nuts, & soy "coffee" to boost protein intake.
EXPERT PANEL RECOMMENDATIONS:
Appropriate Isoflavone Food Fortification Levels: Results of a Consensus Conference.
J.J.B. Anderson, H. Adlercreutz, S. Barnes, M.R. Bennink, M.S. Kurzer, P. Murphy, K. Setchell, C.M. Weaver, and C.M. Hasler. Univ. of No. Carolina, Helsinki, Ala.-Birmingham, Michigan St., Minnesota, Iowa St., Cincinnati, Purdue and Illinois. Experimental Biology 2000, San Diego, CA April 15-18, 2000.
Several leading isflavone researchers convened recently to establish appropriate isoflavone food fortification levels. A consensus was achieved after reviewing human studies in the areas of menopause, osteoporosis, cardiovascular disease, and cancer. For the relief of menopausal symptoms, an intake of 60 mg aglycones was proposed, but consumption of soy protein in conjunction with the isoflavones was not specifically recommended. For improvement in bone mineral density, consumption of 60 to 100 mg aglycones per day, without any concomitant soy protein, was suggested. The consensus panel determined that the minimal intake needed to reduce serum LDL-cholesterol is between 37 and 62 mg aglycones per day, depending on prior cholesterol status (normo- vs. hypercholesterolemia), in conjunction with approximately 25 g of soy protein. The minimal intake for potentially reducing the risk of cancers of the breast, colon and prostate in humans was suggested to be between 50 and 110 mg per day of aglycones. No concomitant soy protein might augment activity of the isoflavones. For health benefits, recommended aglycone intakes ranged from 60 to 100 mg per day (100 to 160 mg glycosides). However, the panel recommended an isoflavone intake of 60 mg of aglycones per day (100 mg glycosides) as a reasonable and responsible food fortification level. The issue of whether soy protein needs to be consumed in conjunction with isoflavones to obtain optimal health benefits requires further experimental investigation.
RECOMMENDED LEVEL OF SOY PROTEIN AND SOY ISOFLAVONES:
Soy Protein (1)
Total Isoflavones (2)
Heart Health: 60 - 105 mg/day
Menopausal Symptoms: 100 mg/day
Bone Mineral Health: 100 - 160 mg/day
Breast Health: 85-183 mg day
Colon Health: 85-183 mg/day
Prostate Health: 85-183 mg/day
Food Fortification Level: 100 mg/day
1. FDA (25 grams/day); American Heart Association (50 grams/day)
2. Appropriate Isoflavone Food Fortification Levels: Results of a Consensus Conference. J.J.B. Anderson, H. Adlercreutz, S. Barnes, M.R. Bennink, M.S. Kurzer, P. Murphy, K. Setchell, C.M. Weaver, and C.M. Hasler. Univ. of No. Carolina, Helsinki, Ala.-Birmingham, Michigan St., Minnesota, Iowa St., Cincinnati, Purdue and Illinois. Experimental Biology 2000, San Diego, CA April 15-18, 2000.
ISOFLAVONE INTAKE LEVELS IN ASIAN/OTHER POPULATIONS:
The following studies report consumption levels of 50 to 300 milligrams per day in the traditional Asian diet:
1. BMJ. 2004 May 29;328(7451):1285. Epub 2004 May 10. Soya food intake and risk of endometrial cancer among Chinese women in Shanghai: population based case-control study. Xu WH, Zheng W, Xiang YB, Ruan ZX, Cheng JR, Dai Q, Gao YT, Shu XO.
2. United States Patents #6,562,380, #6,497,906 and #6,642,212.
3. Nutr Cancer 1999;33(1):82-7. Usual dietary consumption of soy foods and its correlation with the excretion rate of isoflavonoids in overnight urine samples among Chinese women in Shanghai. Chen Z, Zheng W, Custer LJ, Dai Q, Shu XO, Jin F, Franke AA.
4. Cancer Res 2000 Mar 1;60(5):1299-305. Increased urinary excretion of 2-hydroxyestrone but not 16alpha-hydroxyestrone in premenopausal women during a soya diet containing isoflavones. Lu LJ, Cree M, Josyula S, Nagamani M, Grady JJ, Anderson KE.
5. Obstetrics & Gynecology 1998 Jan;91(1):6-11. The effect of dietary soy supplementation on hot flushes. Albertazzi P, Pansini F, Bonaccorsi G, Zanotti L, Forini E, De Aloysio D.
6. Meeting the bean half way. Gallagher, J.C. Menopause 2001 Vol. 8, No. 3:152-3.
7. Nutr Cancer. 1999;33(2):139-45. Dietary intake and sources of isoflavones among Japanese. Wakai K, Egami I, Kato K, Kawamura T, Tamakoshi A, Lin Y, Nakayama T, Wada M, Ohno Y.
8. Murkies AL, Wilcox G, Davis SR. Clinical review 92: Phytoestrogens. J Clin Endocrinol Metab 1998;83(2):297-303.
9. Lancet. 1992 May 16;339(8803):1233. Dietary phyto-oestrogens and the menopause in Japan. Adlercreutz H, Hamalainen E, Gorbach S, Goldin B.
10. Coward L, Barnes NC, Setchell KDR, Barnes S. Genistein, daidzein, and their ß-glycoside conjugates: antitumor isoflavones in soybean foods from American and Asian diets. J Agric Food Chem 1993;41:1961-7.
11. Asia Pac J Clin Nutr. 2004;13(Suppl):S73. Intake of phytoestrogen-rich foods and associated lifestyle and sociodemographic characteristics in Australian women. Hanna K, O'Neill S, Patterson C, Lyons-Wall P.
12. Climacteric. 2000 Dec;3(4):254-61. Dietary phytoestrogen intake in mid-life Australian-born women: relationship to health variables. Guthrie JR, Ball M, Murkies A, Dennerstein L.
13. Nagata C, Takatsuka N, Kurisu Y, et al. Decreased serum total cholesterol concentration is associated with high intake of soy products in Japanese men and women. J Nutr. 1998;128:209-213.
14. Cassidy A, Bingham S, Setchell KDR. Biological effects of a diet of soy protein rich in isoflavone on the menstrual cycle of premenopausal women. Am J Clin Nutr 1994;60:333-40.
15. Adlercreutz H, Honjo H, Higashi A, Fotsis T, Hamalainen E, Hasegawa T, et al. Urinary excretion of lignans and isoflavonoid phytoestrogens in Japanese men and women consuming a traditional Japanese diet. Am J Clin Nutr 1991;54:1093-100.
16. Barnes (Br J Nutr 2003; 89 (Suppl 1):S101-S108) makes the interesting statement that “the consumption of soy products has fallen in Japan because of Westernization of their culture, particularly in the younger generation”.
17. Messina et al. Soy intake and cancer risk: a review of the in vitro and in vivo data. 1994.
18. Yamamoto et al. Validity and Reproducibility of a Self-Administered Food-Frequency Questionnaire to Assess Isoflavone Intake in a Japanese Population in Comparison with Dietary Records and Blood and Urine Isoflavones. J Nutr 2001; 131:2741-2747.
19. A-2. Soy Consumption of Taiwanese Children in Taipei. K. Hsiao1 and P. Lyons-Wall2; 1Chung-Shan Medical University, Taiwan ROC; 2Queensland University of Technology, Australia. Contact: Kuo-Feng Hsiao, Chung-Shan Medical University, 110, Sec 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Taiwan ROC. 5th International Symposium on the Role of Soy in Preventing and Treating Chronic Disease, Sept. 21-24th, 2003. Orlando, FL.
20. Maturitas. 1995 Nov;22(3):167-75. Phytoestrogens--a short review. Knight DC, Eden JA. Royal Hospital for Women, New South Wales, Australia.
Please let me know if I can help further.
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We have a very good online reference source:
* Revival is a dietary supplement. These statements have not been evaluated by the Food and Drug Administration. Revival is not intended to diagnose, treat, cure or prevent any disease. The information presented on our web site is not intended to take the place of your personal physician's advice.
Please consult a physician before using if you are pregnant or nursing,taking medication or suffer from chronic disease.
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