Sucrase Deficiency: Signs, Causes, Sorts, and Remedy


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

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

However let’s again up a bit. First we’ll take a look at what sucrase is, precisely, then dig into what it’s essential learn about one of these deficiency.

Wait, what’s sucrase?

“Sucrase is a digestive enzyme that’s produced within the small gut and is answerable 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.” (It’s possible you’ll 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 in. Whenever you don’t have sufficient sucrase that can assist 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 referred to as a sucrose intolerance, are just like signs of different digestive issues. Kulp and Dr. Hadley checklist some examples:

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

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

So far as an official prognosis, Dr. Hadley says the “gold customary” 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?

In the event you Google “sucrase deficiency,” you might discover each of those circumstances. Are they the identical factor? Sure and no.

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

Nevertheless, 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 injury that’s probably attributable to infections, IBD, celiac illness, SIBO, or malnutrition, based on Kulp. She says it may be momentary in some instances, by which signs lower when the reason for intestinal injury improves.

Not like children with the situation, adults are much less more likely to expertise weight modifications, 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 momentary in some instances.

Dr. Hadley provides that youngsters with a congenital sucrase deficiency might battle to realize weight and have feeding difficulties, which might contribute to developmental delays and systemic signs. He’s discovered that youngsters’ signs are additionally extra extreme than adults’.

Is sucrase deficiency frequent?

CSID isn’t tremendous frequent. Relying on what analysis you take a look at and in what space of the world, the numbers vary from 0.2 p.c to 10 p.c1 of children.

Nevertheless, different analysis and consultants counsel it’s extra frequent—no less than when most of these deficiencies extra usually. Pointing to a 2017 research within the Journal of Parenteral and Enteral Vitamin, Dr. Hadley says that “disaccharidase deficiencies have been well-documented in kids to clarify belly ache.” That very same research discovered about 21 p.c of the children had a sucrase deficiency.

The truth that adults can have this too, nevertheless, is a more recent understanding. But it surely’s attainable the situation is extra prevalent in adults. “Till not too long ago, it was believed this enzyme deficiency was a uncommon childhood illness, however now it’s understood this will additionally have an effect on adults,” Kulp says. Additional, she says, about 70 p.c of adults3 have some type of carbohydrate malabsorption.

Meals that set off sucrase deficiency

When you have a sucrase deficiency, sugar and meals with a great little bit of it (which, keep in mind, aren’t morally dangerous!) can set off uncomfortable signs, Kulp says. She lists particular varieties of sugar—equivalent 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 could be a no-go on your intestine. Don’t really feel dangerous if it’s essential keep away from them (for those who really have a recognized sucrase deficiency, that’s).

Dr. Hadley provides that meals containing sucrose, maltose, and lactose can even incite GI signs. “It’s stunning the quantity of meals that comprise 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 modifications or take any medicines, discuss to your major care physician or gastroenterologist about your signs. They’ll run the required assessments to find out for those who’re truly coping with a sucrase deficiency and never one other well being situation, they usually will help you provide you with a therapy plan.

In the event you do certainly have a sucrase deficiency, don’t lose hope! You don’t should cease consuming meals with sugar totally. One choice 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 can assist 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 usually results in signs for you (holding a meals journal is a technique to do that), and to contemplate working with a dietitian who will help you thru that course of.

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

Above all, keep away from self-diagnosing and hunt down a healthcare skilled that can assist you navigate your signs.


Nicely+Good articles reference scientific, dependable, latest, sturdy research to again up the knowledge we share. You’ll be able to belief us alongside your wellness journey.


  1. Marcadier JL, Boland M, Scott CR, Issa Okay, Wu Z, McIntyre AD, Hegele RA, Geraghty MT, Traces 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 Persistent 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 purposeful 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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