Pros: Protein from the soy bean may help improve the body's immune function and promote bone health Effects of soybean peptide on immune function, brain function, and neurochemistry in healthy volunteers. Yimit D, Hoxur P, Amat N. Nutrition (Burbank, Los Angeles County, Calif.), 2011, Aug.;28(2):1873-1244. Soy foods: are they useful for optimal bone health? Lanou AJ. Therapeutic advances in musculoskeletal disease, 2012, Aug.;3(6):1759-7218. . Soy may also help prevent cardiovascular disease and reduce the risk of certain cancers Effect of soybean protein on novel cardiovascular disease risk factors: a randomized controlled trial. Rebholz CM, Reynolds K, Wofford MR. European journal of clinical nutrition, 2012, Nov.;67(1):1476-5640. .
On the other hand, the whey protein isolation process is much more thorough. It uses various stages of micro-filtration and ultra-filtration to achieve this level of whey protein purity while maintaining the delicatebioactive protein fractions. It essentially separates the protein, almost in its entirety from the raw whey, resulting in 85% to 90% pure protein. So in a 30 gram serving of whey protein isolate, plan on getting between 25 and 27 grams of pure protein with the remaining 3-5 grams being carbs, flavor, sweetener and some calcium, potassium and sodium.
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