Evidence Based
This article is objectively based on relevant scientific literature, written by experienced medical writers, and fact-checked by a team of degreed medical experts.
Our team of registered dietitian nutritionists and licensed medical professionals seek to remain objective and unbiased while preserving the integrity of any scientific debate.
The articles contain evidence-based references from approved scientific sites. The numbers* in parentheses (*1,2,3) will take you to clickable links to our reputable sources.
Is Soy Gluten Free? Exploring Soy’s Gluten Content In 2023

Soy is a common food ingredient that has cemented its place in various diets, including gluten-free diets. The good news is that soy, in its pure form, is naturally gluten-free.
Soybeans themselves do not contain gluten, which makes them a suitable option for individuals with celiac disease or gluten intolerance. However, it’s important to be mindful of potential cross-contamination or gluten-containing additives in soy-based products.
In this article, we will look at the intricacies surrounding the gluten-free nature of soy and help you make informed choices about your diet.
Is Soy Gluten Free?
Yes, soy is naturally gluten-free.
Gluten is a protein found in grains such as wheat, barley, and rye, but it is not present in soybeans.
Therefore, individuals with gluten sensitivity or celiac disease can safely consume soy products without worrying about gluten content.
What Is Soy Used For?
Soy, a versatile legume, finds its way into a myriad of applications. It starts from the world of food, where soybeans undergo extensive processing to create a diverse range of products.
Soy’s influence extends beyond our plates. It plays a vital role in animal feed,[1] supplying protein-rich soybeans and soybean meal to livestock. It also benefits poultry and aquaculture, bolstering their diets and supporting sustainable farming practices.
When it comes to cooking, soybean oil takes center stage as one of the most widely utilized cooking oils worldwide. With its mild flavor and high smoke point, it effortlessly fries, bakes, and sautés a myriad of dishes. Additionally, soybean oil is used in salad dressings, margarine, and mayonnaise,[2] lending its versatility to the culinary world.
Health enthusiasts have also turned to soybeans to harness soy’s nutritional benefits through soy-based supplements. Soy protein powders and shakes allow individuals to boost their protein intake and potentially reap soy’s advantages.
However, soybeans’ impact isn’t confined to nourishing our bodies but contributes to various industrial applications.
Soybean oil, for instance, acts as a key ingredient in the production of biodiesel.[3] This paves the way for renewable and environmentally friendly alternatives to traditional diesel fuel. It also finds use in industrial lubricants, printing inks, and coatings,[4] underscoring its importance in diverse manufacturing sectors. This legume also has applications in the textile industry,[5] where soybean fibers are processed. These fibers are then blended with cotton or wool to create eco-friendly and sustainable fabrics.
Health Benefits Of Soy
Soy offers several potential health benefits due to its nutritional composition and bioactive compounds. Here are some of the notable health benefits associated with soy:
Protein Source
Soybeans, like nuts and seeds, are a plant-based protein source. Soy contains all the essential amino acids[6] the body needs, while nuts and seeds do not. Soy protein is considered high-quality and can be an excellent alternative to animal-based protein sources for vegans and vegetarians.
Heart Health
Soy foods may have a positive impact on heart health.[7] They are naturally low in saturated fat and contain no cholesterol. Regular consumption of soy protein has been associated with lowering bad cholesterol levels, which may help reduce the risk of cardiovascular disease.
Menopausal Symptoms
Soy isoflavones, a type of plant compound found in soybeans, have estrogen-like properties, which are isoflavones. They may help alleviate menopausal symptoms[8] like hot flashes, night sweats, and mood swings in women. However, the effects can vary among individuals. Furthermore, soy isoflavone consumption can reduce the risk of breast cancer[9] in pre-menopausal and post-menopausal women.
Bone Health
The isoflavones and phytoestrogen[10] content of soy may benefit bone health, especially in postmenopausal women. They have been associated with improved bone density and reduced risk of osteoporosis, a condition characterized by fragile bones.
Diabetes And Weight Management
Soy isoflavones can help obesity and blood sugar management[11] by reducing body weight, blood sugar, and fasting insulin levels, especially in postmenopausal women. Consumption of soy products may also reduce type-2 diabetes risk.[12]
Although soy has many health effects, it can become a harmful or life-threatening food for those with soy allergy. If you have any doubts about soy sensitivity, please consult your doctor.
Are All Soy Products Gluten-Free?
Is soya gluten-free? No, not all soya or soy products are gluten-free. While soybeans are naturally gluten-free, some soy products may contain gluten protein due to cross-contamination. This usually happens during processing or the addition of other ingredients that contain gluten.
For example, certain soy sauces contain wheat as an ingredient, which makes them unsuitable for those following a gluten-free diet.
Gluten-Free Soy Options
For those who must adhere to a gluten-free diet plan, there are several soy-based alternatives. Here are some common gluten-free soy products:
Plain Soybeans
Whole, unprocessed soybeans are naturally gluten-free.[13] You can cook them or use them as an ingredient in various dishes.
Tofu
This is also known as bean curd, made from soy milk coagulated into soft white blocks.[14] Most tofu products are gluten-free, but confirming that before going with your choices is always a good idea.
Tamari
Gluten-free diets can benefit from using tamari, a form of soy sauce. Unlike regular soy sauce, tamari uses no wheat in its preparation. It has a rich flavor and can be used as a gluten-free alternative to soy sauce in cooking.
Edamame
It refers to young, green soybeans that are usually served in their pods. They are naturally gluten-free and can be enjoyed as a snack or added to salads,[15] stir-fries, or other dishes.
How To Choose Gluten-Free Soy Products
When choosing gluten-free soy products, here are some steps you can follow:
Read The Ingredient List
Carefully read the ingredient list on the packaging of the soy product, such as gluten-free protein powders. Look for any ingredients containing gluten, such as wheat, barley, rye, or malt. Remember that gluten can sometimes hide in additives or flavorings, so be thorough in your examination.
Look For Gluten-Free Certification
Some products may carry a gluten-free certification label from reputable organizations. These certifications ensure that the product has undergone testing and meets strict gluten-free and vitamin standards.
Check For Gluten-Free Labeling
Look for products that are explicitly labeled as gluten-free on the packaging. Manufacturers who label their products as gluten-free are more likely to have implemented gluten control measures and have tested their products for gluten content. Go for manufacturers that also offer meal delivery options down to your doorstep.
Summary
Soy is naturally gluten-free and can be safely consumed by individuals with gluten sensitivity or celiac disease. Despite some confusion due to the term soy gluten, which is misleading, soybeans themselves do not contain gluten.
However, it is important to be cautious when purchasing processed soy products, such as soy sauce or soy-based baked goods. This is because they may contain added ingredients that contain gluten. Therefore, individuals following a gluten-free diet should always check labels carefully and opt for certified gluten-free soy products when necessary.
Overall, soy can be a nutritious option for those with gluten restrictions, offering a range of health benefits and possibilities.
Frequently Asked Questions
Soy milk does not contain gluten, but it is dairy-free as it is made from soybeans and does not include any animal milk.
Soy flour can be gluten-free, but it depends on the specific brand or product. Some soy flours may be processed in facilities that also handle gluten-containing grains, leading to possible cross-contamination.
Pure soy protein is gluten-free, but it’s essential to check the specific product’s label for any potential additives or processing that may introduce gluten.
Soybean oil is generally considered gluten-free as it is a highly refined oil. The refining process typically removes any traces of gluten proteins, making it safe for those following a gluten-free diet.
Tempeh is often gluten-free, but it’s crucial to check the label or contact the manufacturer to ensure it hasn’t been processed with gluten-containing ingredients.
Many soy-based meat alternatives are gluten-free, but it’s important to check the labels for any gluten cross-contamination risks.
Soy lecithin is typically gluten-free as it is derived from soybeans, but individuals with extreme gluten sensitivity may want to choose products labeled as gluten-free.
Soy-based desserts like soy ice cream can be gluten-free, but it’s essential to verify by checking the product labels for any potential gluten ingredients or gluten cross-contamination warnings.
+ 15 sources
Health Canal avoids using tertiary references. We have strict sourcing guidelines and rely on peer-reviewed studies, academic researches from medical associations and institutions. To ensure the accuracy of articles in Health Canal, you can read more about the editorial process here
- Grgic, D., Varga, E., Novak, B., Müller, A. and Chiara Dall’Asta (2021). Isoflavones in Animals: Metabolism and Effects in Livestock and Occurrence in Feed. [online] 13(12), pp.836–836. doi:https://doi.org/10.3390/toxins13120836.
- Tilakavati Karupaiah, Khun Aik Chuah, Karuthan Chinna, Matsuoka, R., Masuda, Y., Kalyana Sundram and Sugano, M. (2016). Comparing effects of soybean oil- and palm olein-based mayonnaise consumption on the plasma lipid and lipoprotein profiles in human subjects: a double-blind randomized controlled trial with cross-over design. [online] 15(1). doi:https://doi.org/10.1186/s12944-016-0301-9.
- Rathore, D., Surajbhan Sevda, Prasad, S., Veluswamy Venkatramanan, Anuj Kumar Chandel, Rupam Kataki, Sudipa Bhadra, Channashettar, V.A., Bora, N. and Abhilasha Singh Mathuriya (2022). Bioengineering to Accelerate Biodiesel Production for a Sustainable Biorefinery. [online] 9(11), pp.618–618. doi:https://doi.org/10.3390/bioengineering9110618.
- Anda Barkane, Oskars Platnieks, Maksims Jurinovs, Sigita Kasetaite, Jolita Ostrauskaite, Sergejs Gaidukovs and Habibi, Y. (2021). UV-Light Curing of 3D Printing Inks from Vegetable Oils for Stereolithography. [online] 13(8), pp.1195–1195. doi:https://doi.org/10.3390/polym13081195.
- Liu, J., Jiang, W. and Lv, C. (2022). Dyeing of soybean protein/flax blended yarns with reactive dyes and subsequent dye-fixation. [online] 12(1). doi:https://doi.org/10.1038/s41598-022-05581-5.
- Guo Bingfu, Sun, L., Ren, H., Sun, R., Wei, Z., Hong, H., Luan, X., None JunWang, Wang, X., Xu, D., Li, W. and Qiu, L. (2022). Soybean genetic resources contributing to sustainable protein production. [online] 135(11), pp.4095–4121. doi:https://doi.org/10.1007/s00122-022-04222-9.
- Rebholz, C.M., Reynolds, K., Wofford, M.R., Chen, J.C., Kelly, T.F., Mei, H., Whelton, P.K. and He, J. (2012). Effect of soybean protein on novel cardiovascular disease risk factors: a randomized controlled trial. [online] 67(1), pp.58–63. doi:https://doi.org/10.1038/ejcn.2012.186.
- Chen, L. and Chen, K.-H. (2021). Utilization of Isoflavones in Soybeans for Women with Menopausal Syndrome: An Overview. [online] 22(6), pp.3212–3212. doi:https://doi.org/10.3390/ijms22063212.
- I Boutas, Adamantia Kontogeorgi, Constantine Dimitrakakis and Kalantaridou, S.N. (2022). Soy Isoflavones and Breast Cancer Risk: A Meta-analysis. [online] 36(2), pp.556–562. doi:https://doi.org/10.21873/invivo.12737.
- Messina, M. (2016). Soy and Health Update: Evaluation of the Clinical and Epidemiologic Literature. [online] 8(12), pp.754–754. doi:https://doi.org/10.3390/nu8120754.
- Zhang, Y., Chen, W.-H., Guo, J., Zheng Yi Fu, Yi, C., Zhang, M. and Xiaolin Na (2013). Soy isoflavone supplementation could reduce body weight and improve glucose metabolism in non-Asian postmenopausal women—A meta-analysis. [online] 29(1), pp.8–14. doi:https://doi.org/10.1016/j.nut.2012.03.019.
- Zuo, X., Zhao, R., Wu, M., Wan, Q. and Li, T. (2023). Soy Consumption and the Risk of Type 2 Diabetes and Cardiovascular Diseases: A Systematic Review and Meta-Analysis. [online] 15(6), pp.1358–1358. doi:https://doi.org/10.3390/nu15061358.
- Akihiro Maeta, Masahiro Katsukawa, Hayase, Y. and Takahashi, K. (2022). Comparisons of Soybean and Wheat; in the Focus on the Nutritional Aspects and Acute Appetite Sensation. [online] 11(3), pp.389–389. doi:https://doi.org/10.3390/foods11030389.
- Ye An Kim, Syahrizal Muttakin, Young Mee Jung, Heo, T.-Y. and Dong Ho Lee (2019). Tailoring Physical and Sensory Properties of Tofu by the Addition of Jet-Milled, Superfine, Defatted Soybean Flour. [online] 8(12), pp.617–617. doi:https://doi.org/10.3390/foods8120617.
- Martin, Zhang, B., Fu, X. and Ross, J.A. (2022). Editorial: Everything edamame: Biology, production, nutrition, sensory and economics. [online] 13. doi:https://doi.org/10.3389/fpls.2022.976008.