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The Soy Nutrition Institute provides information, research, and discussion about the benefits of soy to your health.

Protein

Protein

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Research Highlights Relevant to Soy Isoflavones, SIF, Ultra-processed Foods and Protein Quality

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  Soy isoflavones and Alzheimer’s disease Although isoflavones are routinely classified as endocrine disruptors (EDs) a recent comprehensive technical review that focused on the observational and clinical data concluded this designation is unwarranted.1 That is one reason a new narrative review by Polish researchers entitled, “The Beneficial Role of Natural Endocrine Disruptors: Phytoestrogens in Alzheimer’s […]

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New Evidence Further Shows Linoleic Acid is Beneficial and Not Pro-inflammatory

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Inflammation is thought to be involved in the etiology of many chronic diseases, including heart disease, diabetes and some cancers. For this reason, the changing scientific consensus that omega-6 polyunsaturated fat (PUFA) does not promote inflammation, as once thought, is an important development. A new paper showing that the omega-6 essential fatty acid linoleic acid […]

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Are fermented soyfoods hypoallergenic?

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First, a little background: Soy is one of the eight foods thought to be responsible for 90% of food-allergic reactions among Americans.1 Even so, only about three out of every 1,000 adults are allergic to soy, averaging the results of North American surveys published over the past decade or so. However, about twice as many […]

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Vitamin D and Calcium Supplementation Protect against Fractures in Vegan Women

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While there is evidence indicating vegetarian diets reduce the risk of chronic diseases such as diabetes,1 cardiovascular diseases,2 and certain cancers,3 there are also concerns that a vegetarian, and especially a vegan, diet increases fracture risk.4 However, new research shows that vitamin D and calcium supplementation eliminates the association between vegan diet and fracture risk.5 […]

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Soy Ready to Meet Consumer Demands

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A recent New York Times opinion piece suggested that we need to launch a moonshot for developing meatless meat. The author called on the U.S. government to put money and muscle behind development of plant-based and lab-grown meats just as it is doing for electric cars, weatherized homes, and renewable energy. Such efforts, the piece […]

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Not all plant foods are equally healthy

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Health authorities increasingly recommend that Westerners shift toward more plant-based diets for health and environmental reasons. Common types of vegetarian diets include lacto-ovo vegetarian and vegan diets. While most people will never be vegetarian, many may eat a diet that consists of more plants and plant protein. These plant-focused, but non-vegetarian, diets are often referred […]

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Soy Protein Promotes Men’s Health, Muscle Mass, and Strength

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A recent surge in evidence from an array of sources highlights the nutritional and health attributes of soy protein for men. These sources include newly published research, the recently released 2020-2025 Dietary Guidelines for Americans and an authorized FDA health claim. Nutrition scientists increasingly recognize the importance of maintaining muscle mass and strength throughout life. […]

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Supplementing Plant-Based Diets with Soy Protein Increases Muscle Mass and Strength

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Considerable work has been devoted to determining the optimal protein for building muscle mass and strength in response to resistance exercise training (RET). Until recently, there was a consensus within the scientific community that whey protein performed better than other proteins in this regard.1 However, studies published over the past couple of years showed that […]

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Soy Protein Does Not Lower Testosterone or Raise IGF-1 Levels in Men

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Research from the University of Illinois by Bosland et al.1 provides important insight about the effects of soy protein on hormone levels in men. This study is especially notable because of its size and duration. The results show that soy protein affects neither circulating levels of free testosterone (biologically active form) or insulin-like growth factor-1 […]

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