Sucrose Intolerance and CSID

An archive of blog articles for folks navigtaing a sucrose intolerance, whether caused by congenital sucrase-isomaltase deficiency (CSID) or acquired sucrase-isomaltase deficiency & SIBO.

Includes high and low sucrose food lists, downloadable PDFs, meal planning tips and more!

Diarrhea After Eating Sugar - 7 Possible Reasons It's Not All In Your Head

7 Possible Causes of Diarrhea After Eating Sugar

“7 Possible Causes of Diarrhea After Eating Sugar” was written by dietetic intern and Certified Personal Trainer Julie Wilcoxson, B.S. and reviewed, edited and updated by Jenna Volpe, RDN, LD, CLT. Have you found yourself rushing to the restroom after eating a sugary treat? It may seem unusual – but you may actually be onto …

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Dietitian Guide to Getting Started with Starchway - Best Practices and Possible Side Effects

Starchway: How to Get Started, Best Practices & Possible Side Effects

Looking to try/buy Intoleran’s starchway supplement? Or maybe you’re curious about whether or not this particular form of enzyme replacement therapy is right for you, your loved one, or your clients navigating a sucrose and/or starch intolerance… If you said “yes” to any of the above, you’re in the right place!  I’m a CSID-informed gut …

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Sweet Relief - Expert Advice on Sucraid (Sacrosidase)

Sweet Relief: When and How to Take Sucraid® (Sacrosidase)

Sacrosidase (Sucraid®) is a digestive enzyme specially designed to aid in the breakdown of sucrose, exclusively for folks with sucrase-isomaltase deficiency – aka “sucrose intolerance”. Whether you have congenital sucrase-isomaltase deficiency (CSID) or an acquired sucrase intolerance, Sucraid® (in combination with a sucrose intolerance diet) may potentially be a game-changer for your quality of life. …

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Acquired Sucrose Intolerance: How to Navigate Sucrase-Isomaltase Deficiency in Adults

Acquired Sucrose Intolerance: How to Navigate Sucrase-Isomaltase Deficiency in Adults

According to a 2022 study, about ~34-40% of folks with diarrhea-predominant irritable bowel syndrome (IBS-D) may actually have an underlying sucrose intolerance – aka a type of sugar malabsorption very similar to lactose intolerance, which masquerades as IBS. (1)  (A sucrose intolerance occurs when your body isn’t making and releasing enough of a digestive enzyme …

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Can Oatmeal and Oat Milk Cause Diarrhea

7 Reasons Oatmeal and Oat Milk Can Cause Diarrhea

Yup, you read that right!  If you’ve made it here, I’m guessing you suspect that oatmeal and/or oat milk could be triggering your symptoms of diarrhea – and you want to see if this is actually possible. As a gut health dietitian nutritionist, I’m here to confirm:  it’s entirely possible for oats, oatmeal, and/or oat …

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Understanding Congenital Sucrase-Isomaltase Deficiency (CSID)

Understanding Congenital Sucrase-Isomaltase Deficiency (CSID): Causes, Symptoms, and Treatment

Congenital Sucrase-Isomaltase Deficiency (CSID) is a genetic disorder which is linked as the culprit of many cases of sucrose intolerance – a type of food intolerance which masquerades as diarrhea-predominant irritable bowel syndrome (IBS-D). This very rare inherited condition isn’t yet well-known or understood, even among gastrointestinal (GI) doctors and gut health dietitians. As a …

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What is a Sucrose Intolerance & How Do You Know If You Have It

What is a Sucrose Intolerance, and How Do You Know if You Have It?

If you’re among the ~25-30% of people with irritable bowel syndrome (IBS) who doesn’t get much symptom relief from following a low FODAMP diet (1), you’ve noticed you get diarrhea after eating sugar, and you’ve ruled out other underlying conditions (with help from your treatment team), chances are it’s not all in your head.  You …

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