The Side Effects Of Meal Replacement Shakes

What are the side effects of meal replacement shakes?

What are the side effects of meal replacement shakes? Learn more about the ingredients to avoid when buying meal replacements.

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Sick of meal replacement side effects? Switch to drink wholesome.

Does your meal replacement cause side effects? If so, you are not alone. Many people experience side effects after drinking meal replacement shakes. The most common side effects of meal replacement shakes are gastrointestinal (GI) – bloating, diarrhea, stomach aches etc.

The reason why meal replacements cause side effects is usually found on the ingredient list. Take a look at the ingredients in your meal replacement powder. I bet that you do not recognize half of them. This is because most meal replacements are made with heavily-processed, fake food ingredients like sweeteners and thickeners. I can almost guarantee that ingredients like these are the reason why your meal replacement causes side effects.

Before we get into the details, you should know that there are two types of meal replacements, ready-to-drink meal replacement shakes and meal replacement powders. Although store-bought shakes are convenient, we recommend that you make your own shakes with meal replacement powder. This is because ready-to-drink meal replacements contain lots of food additives.

drink wholesome protein powder

Avoid food additives.

Most meal replacements are full of food additives. Although they are not necessarily bad for you in small quantities, food additives can add up quickly, especially if you drink a meal replacement shake every day. At higher quantities, food additives can cause gastrointestinal (GI) side effects.

Many food additives are hard to digest and sit in your gut for longer than they should. This gives your gut bacteria more time to ferment (eat), and as they eat, these bacteria produce gas, which causes bloating, cramps, and nausea.

In the short term, 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 disrupt regulatory pathways in the intestine and trigger the development of inflammatory bowel disease (IBD) and systemic inflammatory disorders.

Keep an eye out for artificial sweeteners too. Artificial sweeteners are poorly absorbed by the gut, which means that they feed your hungry gut bacteria. They also alter the composition of your gut microbiota (the collection of microorganisms that help you digest food). This can lead to serious GI problems and widespread inflammation.

Finally, artificial sweeteners, especially sugar alcohols like xylitol, can cause diarrhea because they draw water into your gut. Now you might 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 meal replacements:

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 meal replacements, however. There are several other ingredients that can upset your stomach.

our ingredients: 

egg whites, almonds, oats, coconut, cocoa, monk fruit

the alternative:

SOY PROTEIN ISOLATE, CANOLA OIL, MALTODEXTRIN, ISOMALTULOSE, SOLUBLE CORN FIBER, MODIFIED FOOD STARCH, VITAMIN AND MINERAL PREMIX, CELLULOSE, NATURAL & ARTIFICIAL FLAVORS, SOY LECITHIN, SALT, MONO & DIGLYCERIDE, XANTHAN GUM, SUCRALOSE
*This is the actual ingredient list of one of the best-selling meal replacements in the United States.

Avoid dairy. 

Many meal replacements are made with whey can casein, which are byproducts of cheese and yogurt production. They are known to cause digestive issues, especially for people with lactose intolerance and irritable bowel syndrome. 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.

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. 

Casein and whey protein, which are byproducts of cheese and yogurt production, can also cause acne. Dairy indirectly stimulates insulin production, which regulates sebum production. Sebum, an oily, waxy substance produced by your body’s sebaceous glands, can clog your pores and cause pimples. Dairy can also hinder your ability to process blood sugar efficiently, which can cause inflammation in your skin. This matters because acne is an inflammatory disease, that is, clinical evidence shows that inflammation occurs at all stages of acne development.

If you regularly consume casein or whey protein, you may now finally have something to blame for your breakouts! That said, the relationship between food and acne is complicated, and food that causes acne for one person might not have the same effect on someone else. If you think that whey or casein in your meal replacement might be causing you to break out, stop using it for a few weeks. If your acne improves, you should switch to a dairy-free meal replacement.

chocolate high protein powder replacement powder
vanilla high protein powder replacement powder

Avoid protein concentrates and isolates.

Finding an additive-free, dairy-free meal replacement is hard. Finding an additive-free, dairy-free meal replacement made with real foods is next to impossible. Why? Most meal replacements 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 meal replacements. Sometimes, manufacturers use chemical solvents like hexane to 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.

chocolate high protein powder replacement powder
vanilla high protein powder replacement powder

Instead of protein concentrates or isolates, we use ingredients like egg whites, almonds, and oats. Most of the protein in our meal replacements comes from egg whites, which are simply broken, pasteurized, and dried. Minimally-processed ingredients like this are easy to digest, and a gut-friendly alternative to protein concentrates and isolates.  

Unless you have a sensitivity or allergy to eggs, egg white protein is the best protein source 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. 

★★★★★

“I just finished my first bag and ordered 2 more! I Iove this stuff! I have a sensitive stomach and every meal replacement powder makes me bloated…except drink wholesome!”

-Julio

Sick of meal replacement shake side effects? Switch to drink wholesome. We use simple, easy to digest ingredients. Order samples to see for yourself.

Sick of meal replacements side effects? Switch to drink wholesome.


Hi, my name is Jack. I created drink wholesome because I was sick of meal replacements that upset my stomach. drink wholesome is handmade in Plymouth, MA. 

This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment.