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Soy Benefits

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Soy Reduces Harmful Free Radical Formation During Exercise Better than Whey Protein
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Aaron Tabor

Soy Reduces Harmful Free Radical Formation During Exercise Better than Whey Protein

By Dr. Aaron Tabor, MD
Medical Research Director at Revival Soy - Evidence from recent clinical trials suggests that soy may have added exercise benefits compared to other protein sources, in particular whey protein (a popular protein among many athletes). Researchers from Ohio State University have just completed a study examining the effect of soy protein on muscle weight gain and “antioxidant status”(1). A higher antioxidant status means that your body is able to better neutralize free radicals. Free radicals produced during exercise are harmful to muscle and other tissues.

In the study, men taking part in a weight training class were given protein bars containing either soy protein or whey protein (33 grams/day) for 9 weeks. The men consuming soy protein maintained a healthy antioxidant status, while the antioxidant status of men consuming whey protein actually worsened. By reducing free radical production during exercise, soy protein may help lessen muscle damage and fatigue. Both protein sources increased muscle mass of the men.

Another recent study tested the effects of soy protein and whey protein on “lipid peroxides” (higher levels are considered worse), in men performing moderate intensity, weight resistance exercise (2). This study also compared soy to whey protein (men consumed 40 grams/day for 4 weeks prior to each exercise session). Lipid peroxide levels were reduced in the soy protein group as early as 5 minutes after the exercise session, while peroxide levels were not reduced until 24 hours after exercise in the whey protein group.

In summary, these new studies demonstrate that soy protein can help build muscle mass similar to more commonly used protein sources. However, soy protein provides the added benefit of reducing oxidative stress through the antioxidants naturally present in soy (isoflavones and saponins). Numerous studies indicate that soy isoflavones may be responsible for soy’s antioxidant properties (3). Isoflavones are not found in whey protein or other common protein sources.


Revival Soy makes getting enough soy simple and delicious. With Revival Soy, you can be sure you’re getting enough soy isoflavones in your daily diet—without the soy taste. And you can take comfort in knowing you’re using the #1 doctor-recommended soy protein supplement, backed by clinical studies and many patented benefits.

Just 1 small Revival shake or protein bar gives you the amount of soy isoflavones found in 6 cups of a typical soymilk (160 milligrams). A recent panel of international soy experts recommended up to 160 milligrams of soy isoflavones per day for all of the health benefits of soy.

Revival Soy has partnered with CBN. Your purchase helps support CBN. For a FREE Variety Pack with your first order of 30 bars or shakes, use Offer#702 when ordering online or via phone at

To read more, visit

Medical References:

1 . Brown EC, DiSilvestro RA, Babaknia A, Devor ST. Soy versus whey protein bars: effects on exercise training impact on lean body mass and antioxidant status. Nutrition Journal 2004; 3:22-26.


2. Hill S, Box W, DiSilvestro RA. Moderate intensity resistance exercise, plus or minus soy intake: effects on serum lipids peroxides in young adult males. International Journal of Sport Nutrition and Exercise Metabolism 2004; 14:125-132.


3. Cancer Lett 2001 Oct 22;172(1):1-6. Effect of soy isoflavone supplementation on markers of oxidative stress in men and women. Djuric Z, et al. Barbara Ann Karmanos Cancer Institute, MI.

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. MEDICAL DISCLAIMER: All information is intended for your general knowledge only and is not a substitute for medical advice or treatment for specific medical conditions. We can not and do not give you medical advice.

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