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Is It Okay To Combine Elimination Diets?

Last updated on Jul 2nd, 2019 Authored by Katelyn Collins (RD)     Reviewed by Audrey Inouye (RD)
Elimination diet stacking macaroons

If you have IBS (Irritable Bowel Syndrome), a quick internet search will surface dozens of diets claiming to be the one and only answer to all of your digestive woes.

Not only do you have to sift through the search results to find any sliver of truth, you will also be faced with the option of combining or stacking multiple elimination diets.

Read on to learn more about elimination diet stacking and why this practice can be harmful to your health and your sanity!

What is an elimination diet?

An elimination diet is used to help people figure out what foods they may have an intolerance to. IBS veterans know all about changing their diet, but let’s review the basics of elimination diets so we’re all on the same page!

The first step in an elimination diet is to remove certain foods from the diet for a specific period of time. If the person’s symptoms have improved, foods are then strategically added back in. If a particular food causes symptoms during this “reintroducing phase” of the elimination diet, then the person knows that the food does not work for them right now.

Elimination diets may be used for a variety of health conditions, but we are going to focus on using them for IBS.

Elimination diets for IBS

One of the first steps in managing IBS symptoms is making meaningful changes to what you are eating. This can often include an elimination diet.

The low FODMAP diet is an evidence-based elimination diet that helps people figure out what type of fermentable carbohydrates may be causing their symptoms. The Low FODMAP diet is meant to be done in three phases:

  1. Elimination phase or restriction phase – High FODMAP foods are removed from the diet for 2-6 weeks
  2. Reintroduction and rechallenge phase – High FODMAP foods are added back in systematically to find out which ones cause IBS symptoms
  3. Modified FODMAP diet – Foods that cause symptoms are avoided for now but should still be periodically rechallenged. The goal here is to eat the broadest diet possible while still managing IBS symptoms in the long-term.

If you’ve ever tried the low FODMAP diet, you know that the elimination phase can be very restrictive. The last thing you need to be doing is stacking other elimination diets on top of it!

What is elimination diet stacking?

Elimination diet stacking is an unofficial term used to describe the practice of combining multiple elimination diets together. You may currently be doing this but don’t even realize it.

Let’s say you were diagnosed with IBS and your doctor told you to try the low FODMAP diet. Instead of seeking help from a registered dietitian, you pulled a list off the internet and stopped eating all of the foods from the “avoid” column. A few weeks go by, but your IBS symptoms have barely changed.

You then decide to continue the elimination phase for another month to see if that helps. But it doesn’t. You hop back on the internet and find another elimination diet with its’ own unique list of foods to avoid and you add these restrictions on top of your low FODMAP diet.

At this point, you would do anything to feel better! Does this sound like you? You’re not alone! Elimination diet stacking is all too common, especially when you feel like you’ve tried everything for your IBS symptoms.

When to broaden your diet

The answer to your digestive issues is almost never more restriction. The stress of being on an extremely restrictive diet can actually trigger IBS symptoms.

Elimination diet stacking may also put your health at risk because you are likely undereating and cutting out key nutrients that your body needs to function properly. When someone has been severely restricting their diet for a while, easing up on the restrictions often improves their IBS symptoms. But in some cases, diet alone may not be enough to fully manage IBS symptoms.

“I’m still having IBS symptoms!”

Most people don’t start out with an elimination diet stacking. It usually comes from desperation after the first elimination diet fails. Some people may even combine three or more diets together in an effort to get relief from their symptoms.  

Are you ready to take control of your gut symptoms?

YES I WANT TOO!

No thanks, my gut is perfect.

In an ideal world, you would see a registered dietitian as soon as you get your IBS diagnosis. But many people are left to DIY their diet. If you’ve tried diet changes on your own with no luck, a registered dietitian can help you create an IBS management plan that is unique to you.

Depending on your needs, your gastroenterologist or family doctor can also recommend other allied health professionals such as pelvic floor specialists or psychologists who specialize in digestive conditions. Your doctor can also recommend tests for other health conditions or prescribe helpful medications. Please remember that you can’t force a dietary solution on a non-diet problem. IBS symptoms can’t always be managed with diet alone.

Final thoughts on elimination diet stacking

Elimination diets are meant to be temporary and are not meant to be combined together. Unfortunately, many people miss this point and wrongly assume that “if one elimination diet is good, then two must be better.”

If you have tried to make dietary changes on your own and are still having symptoms, working with a registered dietitian can help keep you from falling into the trap of elimination diet stacking!  

Author: Katelyn Collins (RD)

Katelyn Collins, RD is a US-based registered dietitian specializing in irritable bowel syndrome (IBS) and digestive health. Katelyn's personal experience with IBS first sparked her passion for nutrition and health. Since then, she has been a vocal advocat... Read More

Professional Reviewer: Audrey Inouye (RD)

Audrey Inouye is a FODMAP trained registered dietitian in Canada. She began her career in public health by managing community outreach and peer support programs for diabetes and prenatal nutrition. Audrey later branched into private practice and founded I... Read More

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Comments

  1. Faruk Patel says

    July 4, 2019 at 7:14 am

    Thank you very much.I am facing challenges in my elimination diet but regret that we really don’t have dieticians specializing in Ibs in Zambia, Southern Africa

    Reply
    • Alana ScottAlana Scott says

      July 4, 2019 at 7:53 am

      Hi Faruk,

      We know finding good dietitians can be challenging. If you send us an email to [email protected] we can see if we can help you find a dietitian who can do a phone or online consult with you.

      Reply
      • Raya says

        July 5, 2019 at 10:09 am

        For 25 years i have In addition to IBS, gastritis, Gerd and reflux, my elimination process was mostly according to my body symptoms, I eliminated milk products before doing the lactose test (positive). With all respect to FoodMap, I can’t eat most of the ingredients mainly because of Gerd and reflux symptoms !! I am not the only one! All researchers don’t take it in account and it’s very frustrating! I suffer very much from pain and no dietician can really help without experiencing the whole package of IBS and IBD

        Reply
        • Alana ScottAlana Scott says

          July 8, 2019 at 10:04 pm

          Hi Raya,

          That is a really challenging position to be in and I so wish we could just wave a magic wand and make you better. I know that there is a lot of research happening in the gut health and IBS space so hopefully, this will lead to some more answers over the coming years. Also, have you looked into non-dietary strategies to help manage your IBS symptoms? Cognitive behavioral therapy and gut hypnotherapy both have good evidence that shows they can help reduce symptoms and might be worth looking into.

          Reply
          • Lola says

            July 29, 2019 at 3:59 am

            Hi, Alana! Could you please respond to this message with a link for colon hypnotherapy? I’ve been dealing with chronic constipation for 3-4 months now. I just got diagnosed with dysbiosis and candida. Starting the low fod map diet + low sugar fruits / limited grains. My colon is constantly stretched because most over the counter and herbs eventually stop working. Thanks 🙂

          • Alana ScottAlana Scott says

            July 29, 2019 at 9:59 pm

            Hi Lola,

            Thanks for messaging. It sounds like you are having a challenging time. As requested here is some more information on hypnotherapy for IBS: https://www.aboutibs.org/complimentary-or-alternative-treatments/hypnosis-for-ibs.html

            If you are working with a dietitian, he/she might be able to recommend hypnotherapists or CBT practitioners in your area that specialized in IBS and gut issues. They can also make sure you are getting enough of the right sort of fibre to help make bowel movements easier.

            Additionally, if you haven’t already it might be worth having a session with a women’s health pelvic floor physio who can make sure there aren’t any muscle issues going on that are making it harder for you to go to the loo.

            I hope that helps!

  2. GWEN STEWART says

    July 4, 2019 at 1:29 pm

    I am diabetic as well as having IBS, and fuss every day with glycemic index, carb counting and FODMAP choices. I am lucky to live alone with only myself to please. I try to have only appropriate foods in the house with some fave snacks. I am grateful for what I CAN have and remember the pain prior to FODMAPs.

    Reply
    • Alana ScottAlana Scott says

      July 4, 2019 at 8:23 pm

      Hi Gwen,

      It sounds like you are doing really well managing your diabetes and your IBS. When someone has another medical condition, like diabetes, we understand that additional dietary changes can be needed like the ones you have mentioned. Our take-home message is for people not to do this by themselves but get some from a dietitian so their diet remains nutritionally adequate. Focusing on what you can eat is a great way to make sure you are eating lots of variety within your restrictions.

      Reply
  3. Nancy Warner says

    July 4, 2019 at 7:57 pm

    Carbs and sweets seem to be my problem. Also some fruits like oranges, watermelon, and veggies like corn and beans. I guess .i need to be on bland diet all time which is so boring. Also I find eating large amounts triggers D.

    Reply
    • Alana ScottAlana Scott says

      July 4, 2019 at 8:24 pm

      Hi Nancy,

      Thanks for commenting! It sounds like you might be finding it challenging to pin down exactly what foods are triggering your symptoms. There are other food intolerances beyond FODMAPs, as well as lifestyle factors, that can cause IBS symptoms as well. Have you talked to a dietitian who can help you figure out if it’s FODMAPs, other foods, or lifestyle factors influencing your symptoms?

      Reply

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