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Sucrase Deficiency: Signs, Causes, Sorts, and Remedy


When brainstorming what is likely to be behind your abdomen discomfort, you may consider stress or perhaps a situation like IBS or IBD. In spite of everything, they’re quite common contributors.

However one thing a bit extra difficult and fewer mentioned may truly be what’s at hand. We’re speaking a couple of sucrase deficiency. Principally, it impacts the digestion of sugar and carbs within the physique.

However let’s again up a bit. First we’ll have a look at what sucrase is, precisely, then dig into what you’ll want to learn about such a deficiency.

Wait, what’s sucrase?

“Sucrase is a digestive enzyme that’s produced within the small gut and is accountable for breaking up the sugar sucrose into the smaller sugars glucose and fructose, to allow them to be absorbed and utilized by the physique,” says Kim Kulp, RDN, a dietitian, intestine well being professional, and proprietor of the Intestine Well being Connection within the San Francisco Bay Space.

Some individuals’s our bodies don’t have sufficient sucrase. “Sucrase intolerance/deficiency correlates with the dearth of enzyme used to interrupt down sucrose,” says Tim Hadley, DO, a pediatric gastroenterologist at Pediatrix Gastroenterology of the Rocky Mountains. “It tends to fall beneath the umbrella of disaccharidase deficiencies, which embrace lactase, sucrase, and maltase.” (You could acknowledge that first one: A lactase deficiency results in lactose intolerance, or bother digesting the sugar in dairy merchandise.)

That is the place digestive issues are available. Once you don’t have sufficient sucrase that will help you break down the sucrose you’re consuming, that undigested sugar finally ends up touring to the big gut, inflicting gastrointestinal (GI) misery.

Indicators of sucrase deficiency

Signs of a sucrase deficiency, generally known as a sucrose intolerance, are much like signs of different digestive issues. Kulp and Dr. Hadley checklist some examples:

  • Cramps, notably after consuming
  • Bloating or belly distention
  • A change in your stool, with diarrhea being extra probably
  • Fuel
  • Generalized discomfort

It’s necessary to notice that noticing these signs isn’t a particular signal you’ve gotten a sucrase deficiency, although. “These identical signs are seen in IBS, making it onerous to differentiate the reason for the GI misery with out additional testing,” Kulp says.

So far as an official prognosis, Dr. Hadley says the “gold commonplace” is an esophagogastroduodenoscopy (EGD), an endoscopic process that examines and takes biopsies (tissue samples) of the higher GI tract.

What’s the distinction between sucrose intolerance in adults and congenital sucrase-isomaltase deficiency?

Should you Google “sucrase deficiency,” chances are you’ll discover each of those circumstances. Are they the identical factor? Sure and no.

“Each are merely deficiencies in enzymes,” Dr. Hadley says.

Nonetheless, how they begin, how lengthy they final, and the way they present up can look totally different.

Sucrose intolerance in adults

This situation can come from intestinal harm that’s probably attributable to infections, IBD, celiac illness, SIBO, or malnutrition, in line with Kulp. She says it may be short-term in some instances, by which signs lower when the reason for intestinal harm improves.

In contrast to children with the situation, adults are much less more likely to expertise weight adjustments, Dr. Hadley provides, and their signs will probably be extra like these of IBS.

Congenital sucrase-isomaltase deficiency (CSID)

This situation is an inherited illness (therefore the phrase “congenital”), Kulp says. It may be short-term in some instances.

Dr. Hadley provides that children with a congenital sucrase deficiency could wrestle to achieve weight and have feeding difficulties, which may contribute to developmental delays and systemic signs. He’s discovered that children’ signs are additionally extra extreme than adults’.

Is sucrase deficiency frequent?

CSID isn’t tremendous frequent. Relying on what analysis you have a look at and in what space of the world, the numbers vary from 0.2 % to 10 %1 of youngsters.

Nonetheless, different analysis and specialists recommend it’s extra frequent—a minimum of when taking a look at some of these deficiencies extra usually. Pointing to a 2017 examine within the Journal of Parenteral and Enteral Vitamin, Dr. Hadley says that “disaccharidase deficiencies have been well-documented in kids to elucidate belly ache.” That very same examine discovered about 21 % of the youngsters had a sucrase deficiency.

The truth that adults can have this too, nonetheless, is a more recent understanding. But it surely’s doable the situation is extra prevalent in adults. “Till just lately, it was believed this enzyme deficiency was a uncommon childhood illness, however now it’s understood this may additionally have an effect on adults,” Kulp says. Additional, she says, about 70 % of adults3 have some type of carbohydrate malabsorption.

Meals that set off sucrase deficiency

When you’ve got a sucrase deficiency, sugar and meals with a great little bit of it (which, bear in mind, aren’t morally dangerous!) can set off uncomfortable signs, Kulp says. She lists particular kinds of sugar—akin to desk, uncooked, and brown—in addition to maple syrup, molasses, and pure sugars in fruits and veggies like apples, oranges, pineapples, carrots, onions, and candy potatoes.

Yep, even veggies is usually a no-go to your intestine. Don’t really feel dangerous if you’ll want to keep away from them (for those who actually have a recognized sucrase deficiency, that’s).

Dr. Hadley provides that meals containing sucrose, maltose, and lactose may also incite GI signs. “It’s shocking the quantity of meals that include these merchandise as dietary supplements or merely preservatives,” he notes.

The way to handle the signs of sucrase deficiency

Earlier than you make any dietary adjustments or take any drugs, discuss to your main care physician or gastroenterologist about your signs. They’ll run the required checks to find out for those who’re truly coping with a sucrase deficiency and never one other well being subject, and so they can assist you provide you with a therapy plan.

Should you do certainly have a sucrase deficiency, don’t lose hope! You don’t must cease consuming meals with sugar solely. One possibility is to take the enzyme complement Sucraid together with your meal, Kulp and Dr. Hadley say. (You’ll want a prescription for it.) Much like how Lactaid works for individuals with lactose intolerance, Sucraid delivers sucrase enzymes to your intestine, that will help you digest sucrose and keep away from disagreeable signs.

Kulp additionally encourages getting a greater understanding of your physique and the way a lot sucrose sometimes results in signs for you (conserving a meals journal is a method to do that), and to contemplate working with a dietitian who can assist you thru that course of.

Dr. Hadley agrees that working with a registered dietitian could be useful as you navigate these modifications and study extra about how your physique metabolizes varied meals.

Above all, keep away from self-diagnosing and search out a healthcare skilled that will help you navigate your signs.


Effectively+Good articles reference scientific, dependable, current, sturdy research to again up the knowledge we share. You possibly can belief us alongside your wellness journey.


  1. Marcadier JL, Boland M, Scott CR, Issa Okay, Wu Z, McIntyre AD, Hegele RA, Geraghty MT, Strains MA. Congenital sucrase-isomaltase deficiency: identification of a typical Inuit founder mutation. CMAJ. 2015 Feb 3;187(2):102-107. doi: 10.1503/cmaj.140657. Epub 2014 Dec 1. PMID: 25452324; PMCID: PMC4312148.

  2. El-Chammas Okay, Williams SE, Miranda A. Disaccharidase Deficiencies in Youngsters With Power Belly Ache. JPEN J Parenter Enteral Nutr. 2017 Mar;41(3):463-469. doi: 10.1177/0148607115594675. Epub 2016 Jul 11. PMID: 26160252.

  3. Frissora CL, Rao SSC. Sucrose intolerance in adults with frequent useful gastrointestinal signs. Proc (Bayl Univ Med Cent). 2022 Aug 23;35(6):790-793. doi: 10.1080/08998280.2022.2114070. PMID: 36304608; PMCID: PMC9586574.


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