What is the best soy-free protein powder?
What is soy?
Soy is one of the most controversial foods. On the one hand, the soybean is a protein rich legume that contains little to no cholesterol or saturated fat and lots of fiber, iron, and calcium. Soy protein is also one of the only complete plant proteins, meaning that it contains all nine essential amino acids that the human body cannot produce on its own. On the other hand, soy is an allergen, associated with adverse side effects, and the epitome of a genetically modified crop that has detrimental impacts on the environment and human health.
Here are 4 reasons to avoid soy.
1. Soy is one of the “Big 8” allergens responsible for 90 percent of all food allergies.
2. Soy contains isoflavones, a type of plant estrogen similar to human estrogen. Soy isoflavones can bind to estrogen receptors in the body and cause weak estrogenic or anti-estrogenic activity. Some research suggests that this can increase the risk of chronic diseases like breast cancer.
3. Soy, which is the largest source of protein for animal feed, is also second only to beef in terms of driving global deforestation and soil erosion.
4. Soy is one of the most genetically modified (GM) crops on the planet. The vast majority of GM crops are engineered to survive the direct application of herbicides and pesticides. According to the US Department of Agriculture, over 90 percent of soybeans grown on US farms are genetically engineered to withstand an herbicide called Roundup. The primary ingredient in Roundup is glyphosate, which is classified as a probable human carcinogen. GM soybeans contain high residues of glyphosate.
What is the best non-soy protein powder?
If you read food labels, you have certainly come across lecithin. Most protein powders contain either soy or sunflower lecithin. Sometimes manufacturers do not specify which type of lecithin they are using, which probably means that they are using soy lecithin, the cheaper and of the two. When in doubt, check to see if “soy” is listed as an allergen. If it is, your protein powder probably contains soy lecithin. You should also avoid lecithin, regardless of what it is made of, because it is a food additive.
Avoid food additives.
Most protein powders are full of food additives. Although not necessarily bad for you in small quantities, additives can add up quickly (especially if you drink a protein shake every day) and cause gastrointestinal (GI) side effects like bloating, constipation, diarrhea, gas, and stomach pain. This is because food additives are, generally speaking, hard to digest. They sit in your gut for longer than food should, which gives your gut bacteria more time to eat. As they eat, these bacteria produce gas, which causes bloating and stomach pain. Gas also slows colonic transit (the amount of time it takes food to travel through the colon), which can lead to constipation.
In the long term, food additives can disrupt regulatory pathways in the intestine, which can result in the development of inflammatory bowel disease (IBD) and systemic inflammatory disorders. Artificial sweeteners are among the most harmful additives in the long term as they alter the composition of your gut microbiota (the collection of microorganisms that help you digest food). This can lead to serious, chronic GI problems and widespread inflammation. Some sweeteners, especially sugar alcohols like xylitol, are also poorly absorbed by the gut (meaning they feed those hungry gut bacteria) and cause diarrhea because they draw water into your intestine. Now you finally have something to blame for those post-protein shake trips to the bathroom!
Here is a list of the most common food additives in protein powder:
acacia gum, acesulfame potassium, artificial flavors, aspartame, carrageenan, cellulose gum, dextrin, dextrose, erythritol, gellan gum, guar gum, gum arabic, inulin, locust bean gum, “natural” flavors*, maltodextrin, rice syrup solids, soy lecithin, silica, sucralose, sunflower lecithin, xanthan gum, xylitol
When it comes to identifying food additives, go with your gut. 😉 As a rule of thumb, they are the ingredients that you cannot pronounce. Food additives are not the only thing to look out for when buying protein powder for sensitive stomachs, however. There are several other ingredients that can upset your stomach.
egg whites, coconut, cocoa, monk fruit
Protein Matrix Comprised of (Whey Protein Concentrate, Whey Protein Isolate, Calcium Caseinate, Micellar Casein, Milk Protein Isolate, Egg Albumen, Glutamine Peptides), Polydextrose, Sunflower Creamer (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono- and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols), Natural and Artificial Flavor, MCT Powder (Medium Chain Triglycerides, Nonfat Dry Milk, Disodium Phosphate, Silicon Dioxide), Lecithin, Cellulose Gum, Salt, Yellow 5, Sucralose, Acesulfame Potassium, Papain, Bromelain.
*This is the actual ingredient list of one of the best-selling protein powders in the United States.
Dairy-based proteins like whey and casein, which are byproducts of cheese and yogurt production, are known to cause digestive issues, especially for people with lactose intolerance and irritable bowel syndrome (IBS). Over one in three Americans are lactose intolerant, and the prevalence of IBS is somewhere between 10 and 15 percent in the United States. It follows that you may be lactose intolerant or have IBS and not even know it. Irritable bowel syndrome (IBS) is a poorly understood condition, and it is unclear why dairy triggers symptoms. Lactose intolerance, on the other hand, is clearly understood. People with lactose intolerance are unable to fully digest lactose, the sugar in dairy. As you just learned, partially digested food feeds the bacteria in your gut, which produce gas.
Avoid protein concentrates and isolates.
Finding an additive-free, dairy-free protein powder is hard. Finding an additive-free, dairy-free protein powder made with real foods is next to impossible. Why? Most protein powders are made with protein concentrates and isolates, foods stripped of everything but the protein. They are listed on the ingredient list as “pea protein,” for example, as opposed to “peas.” We will not go into the details, but protein concentrates and isolates undergo heavy mechanical and chemical processing before becoming protein powder. Sometimes, manufacturers use chemical solvents like hexane to isolate (separate) the protein from the food. This means that what you end up putting into your body looks nothing like real food. The potential problem here is that your gut might not know what to do with ingredients like these. Your gut prefers the real thing, not some heavily-processed imitation, so protein concentrates and isolates might be hard to digest for people with sensitive stomachs.
Instead of protein concentrates or isolates, we use egg whites and almonds. Egg whites are simply pasteurized and dried before becoming protein powder. Almonds are just roasted, pressed, and ground. Minimally-processed ingredients like these are easy to digest and a stomach and gut-friendly alternative to protein concentrates and isolates.
Unless you have a sensitivity or allergy to eggs, egg white protein is the best protein for people with sensitive stomachs. Egg whites are low in fiber, low-FODMAP, and have the highest protein digestibility-corrected amino acid score (PDCAAS) of any whole food. Our customers have experienced fewer digestive issues with egg white protein than with any other type of protein.
If you cannot eat eggs, try our almond protein powder. Unlike protein concentrates or isolates, almonds contain lots of healthy fats, fiber, and other nutrients like calcium and vitamin E. We prefer almonds to other minimally-processed plant protein sources because they are more gut-friendly. Research suggests that almonds can improve the diversity and composition of the gut microbiome. Research also suggests that almonds possess prebiotic properties, meaning they stimulate the growth of healthy bacteria in the gut.
“I just finished my first bag and ordered 2 more! I Iove this stuff! I have IBS and every protein powder hurts my stomach…except drink wholesome!”
This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment.