Revival Soy Doctor
Questioning the information recently out on soy protein isoflavins blocking the minerals in your body. I understood the article to say that the body could not absorb minerals with the intake of isoflavins from soy protein. I was using soy protein with added isoflavins to help with menopause symptoms, but I do not want to create more problems.
Hello Ms. Williams,
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 interfere with zinc or mineral absorption?
No FDA warnings have been issued for soy and mineral absorption. Many
cereal and legumes, including soy, do contain phytates. Phytates are known
to bind to minerals, sometimes resulting in a decrease in mineral
absorption, but this is reversed with vitamin/mineral supplementation. Zinc
is the mineral that is most affected by the phytates in vegetable proteins.
Almost all phytic acid is inactivated in cooked soy protein. A recent study showed that processed soy foods and products in Japan have about a 10% phytic acid level as raw soybeans, and this level helps PROTECT against cancer. Revival is a cooked soy product. The beans are roasted before milling into a powder or soy puffs.
If zinc content is a major consideration for those eating soy protein
products, isolated soy protein can be supplemented with zinc in specific
food applications to reduce the ratio of phytate to zinc, thus improving
both zinc content and zinc bioavailability. Some studies (see below) have
shown equal zinc absorption from casein and soy.
In summary, unless one is eating a sole diet of soy protein, and not taking a multivitamin, zinc deficiency is not a problem.
1. Old studies that suggested that soy protein would cause zinc problems were not statistically-significant and have since been disproven. Subsequent studies have not revealed problems.
2. The FDA found no evidence that a diet high in soy protein caused any harm.
3. Asians are not zinc deficient.
4. Revival is fortified with extra zinc.
ARTICLES: 1. J Nutr 1982 Oct;112(10):1809-21
Bioavailability of zinc from a diet based on isolated soy protein:
application in young men of the stable isotope tracer, 70Zn.
Solomons NW, Janghorbani M, Ting BT, Steinke FH, Christensen M, Bijlani R,
Istfan N, Young VR
With the aid of the stable isotope, 70Zn, as a tracer and neutron activation
analysis, a combination of extrinsic labeling of meals and fecal monitoring
of isotope excretion was used as a safe and noninvasive approach for
assessing the effects of the vegetable (soy) and animal (milk, beef)
proteins on the absorption of zinc in healthy, adult human volunteers. A
known amount of 70Zn was added as ZnCl2, to six consecutive meals over a
2-day period during which either one of three isonitrogenous liquid formulas
(skim milk; soy isolate; or a 50:50 mixture) or one of two bologna sausages
(soy isolate of beef) were given. The mean absorption of 70Zn from milk, soy
and soy/milk was 41 +/- 4, 34 +/- 4, and 41 +/- 7% (mean +/- SEM),
respectively, the presence of soy protein having no effect on absorption of
the extrinsic label. For beef bologna and soy bologna, fractional absorption
of the 70Zn tracer was 41 +/- 4 and 30 +/- 3%, respectively. Beef might
favor absorption of extrinsic zinc. The kinetics of isotope excretion,
pooling procedures, for stool samples and the utility of fecal markers were
PMID: 6889635, UI: 83009341
2. J Nutr 1980 Apr;110(4):829-36
Effect of isolated soybean protein on magnesium bioavailability.
Lo GS, Steinke FH, Hopkins DT
The effects of isolated soybean protein and animal protein on magnesium
bioavailability were evaluated in this study. Total serum magnesium and
femur bone ash magnesium values were used to evaluate the relative
bioavailability of magnesium in diets in which ANRC casein, isolated soybean
proteins, autoclaved isolated soybean proteins or lyophilized beef served as
protein sources. Low magnesium basal diets were supplemented with graded
levels of magnesium from magnesium carbonate and fed to weanling
Sprague-Dawley rats for 28 days. Serum and femur bone ash magnesium were
analyzed by atomic absorption spectrophotometry. Statistical analysis of
serum and bone ash magnesium using a slope-ratio bioassay indicated that the
protein sources did not have a significant effect on the bioavailability of
PMID: 7189208, UI: 80162212
3. J Nutr 1981 Dec;111(12):2223-35
Effect of phytate:zinc molar ratio and isolated soybean protein on zinc
Lo GS, Settle SL, Steinke FH, Hopkins DT
The effect of phytate to zinc (Zn) molar ratio on zinc bioavailability was
evaluated in rats. The bioavailability was determined by giving an oral dose
of 65Zn and measuring the liver uptake and disappearance from the
gastrointestinal tract after 4 hours and fecal and urinary 65Zn excretion
from 24 to 168 hours. Rats were fed a diet containing 12 ppm zinc from zinc
sulfate with and without phytic acid from sodium phytate for 14 days. At the
end of 14 days feeding, the rats were intubated with a homogenized diet
containing 12 ppm zinc, one microCi 65Zn and graded levels of phytic acid so
that the phytate:Zn molar ratio varied from 0 to 100. Zinc bioavailability
was significantly reduced only in the rats fed diets containing phytate and
intubated diet containing phytate:zinc molar ratio of 12.5 and above. The
results from this study also indicated that measuring 65Zn disappearance and
uptake was a valid bioassay for determining zinc bioavailability. The effect
of isolated soybean protein on extrinsic zinc bioavailability was also
evaluated in rats fed zinc adequate and zinc deficient diets. The results
showed that zinc bioavailability was significantly reduced by replacing egg
white protein with isolated soybean protein only when the rats were fed zinc
deficient diet prior to single oral dose of 65Zn mixed with test proteins.
The effect of isolated soybean protein on intrinsic zinc bioavailability for
the growing rats was also evaluated. The results demonstrated that the zinc
bioavailability in isolated soybean protein can be improved by fortifying
with zinc so that the phytate:Zn molar ratio is less than 10.
If you have never tried Revival Soy, give us a call. The taste is excellent and we have seen great results.
Women's Health & Soy Protein Overview
Benefits for women of all ages!
Soy alleviates menopausal and perimenopausal symptoms: Soy protein can significantly improve your midlife comfort and health. (1,2,3,4) Symptoms such as hot flashes, night sweats, mood swings, fatigue, vaginal dryness, loss of libido, headaches, anxiety and insomnia can be controlled with Revival. Soy is extremely safe and has never been linked to breast or endometrial cancer. In fact, soy consumption may reduce the risk of certain cancers including breast, endometrial (uterine) and colon cancer. (3,5,6,7,8,9,10,11) Poplulations with the highest soy consumption have the lowest rates of breast and endometrial cancers.
Soy protein may exert positive effects on bone density in women of all ages. (12,13,14) Numerous animal and human studies have shown that soy protein can help you maintain a strong skeletal system and healthy joints.
Soy is considered extremely safe: soy protein does not stimulate cell growth in breast or endometrial (uterine) tissues. (15) Soy inhibits estrogen-induced breast and endometrial cell proliferation. (16) Soy may function as a selective estrogen, producing the benefits but not the risks associated with traditional hormone replacement therapy (commonly referred to as HRT). (15,17,18)
Soy protein lowers cholesterol levels and lowers heart disease risk - the #1 killer of women and men. (4,19) On October 26th, 1999, the FDA approved a new health claim that soy protein reduces risk of coronary heart disease. (20)
Soy may also benefit women on HRT by blocking breast and uterine tissue proliferation caused by estrogen (16), and producing additive benefits with estrogen to lower cholesterol/heart disease risk and improving blood vessel reactivity. (19)
Human studies show that soy protein helps decrease fat and increases lean tissue. (22) Soy is also an excellent connective tissue stimulant for better hair/skin/nails.
Should I take anything else with Revival?
We recommend a balanced diet that is low in fat and high in fiber/fruits /vegetables. Take the Revival Firm Foundation Multivitamin/Multimineral for 100% of daily values (without the possibility of ‘overdosing’ on “mega” vitamins). Take the Revival Firm Foundation Calcium Blend for stronger bones and better colon health. We also recommend anti-oxidants (Vitamin C, Vitamin E and plant-based nutrients) and Omega-3/Omega-6 oils. We don’t add vitamins to Revival Soy because vitamins taste terrible when blended into food products. You should consult with your own doctor or a registered dietitian to evaluate your diet regularly. Regular exercise is also crucial to good health.
Revival Firm Foundation supplements are different: We have designed our multivitamin/multimineral to supply you with 100% of your daily baseline needs versus “MEGA” vitamins containing hundreds or thousands of percentages the recommended daily intake of vitamins and minerals. This “firm foundation” prevents you from overdosing on vitamins and minerals. Our calcium supplement gives you 500 milligrams of calcium from 5 different sources for maximum absorption. Our supplements are the ONLY doctor-formulated ones on the market that uses premium, high-potency ingredients in a natural all-vegetable capsule without any animal gelatin, binders, fillers, compression agents, preservatives, colors, flavors, sugar, salt, wheat, yeast, lactose or dairy products. We use only premium powdered ingredients that are documented to have the best absorption characteristics. Additionally, our capsules are smaller in size, thus easier to swallow, than comparable brands. We have achieved the perfect way to supplement your diet with vitamins and minerals.
Please let me know if I can help further.
To inquire about your order, email us
We have a very good online reference source:
* Read Dr. Tabor's last guest transcript
* 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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