Le syndrome de chasse


 Chase syndrome is a digestive disorder affecting the stomach. We speak of "hunting syndrome" or "dumping syndrome" when gastric emptying is too rapid. This means that food passes from the stomach to the small intestine too quickly. The hunting syndrome can be early or late.f.


The most common causes of flushing syndrome are gastric surgeries, such as bariatric surgery. These surgeries aim to remove all or part of the stomach, which speeds up the passage of food to the small intestine and leads to flushing syndrome..

Early versus late

The hunting syndrome can be early or late depending on when it occurs after meals.

In the case of early hunting syndrome, it appears between 15 to 60 minutes after a meal. Emptying of undigested food from the stomach to the small intestine is very rapid. This causes a rapid and large entry of fluid from plasma and nearby tissues into the small intestine and triggers the symptoms of early flushing syndrome..

In the case of late hunting syndrome, it occurs between one to three hours after a meal and more particularly following the consumption of carbohydrates. Similar to early hunting syndrome, undigested food, especially carbohydrates, passes rapidly from the stomach to the small intestine. These carbohydrates are then absorbed quickly by the body, which increases the level of sugar in the blood. In response to this increase, the pancreas produces a large amount of insulin. This leads to a rapid decrease in blood sugar levels, hypoglycemia, and triggers the symptoms of late hunting syndrome.if.


Symptoms of chase syndrome vary depending on its early or late nature.

If it is early, the gastrointestinal symptoms may be a feeling of fullness, diarrhea, rumbling rumblings, abdominal pain eg. : cramps, bloating, nausea and vomiting. Symptoms may also include fatigue, a need to lie down after meals, palpitations, sweating, sweating, tachycardia, heart beating too fast, hypotension and fainting fainting.e (syncope).

If it is late, symptoms may include fatigue, weakness, hunger, confusion, unconsciousness, sweating, palpitations, shaking and irritability.é.

Finally, the symptoms of hunting syndrome can also vary depending on the type of food consumed. For example, symptoms may be exacerbated following ingestion of a high carbohydrate meal.s.


Your doctor will review your medical history and recent surgeries and ask you questions about your symptoms. He will be able to make you pass one of the many existing tests to make a diagnosis as precise as possible.

  • Glucose load teste  determines whether the body responds in a normal way to glucose. A sweet glucose solution should be drunk. An hour later, a health technician measures the blood sugar levels.n.
  • A gastric emptying scan  allows you to measure the speed at which food is digested. A tiny amount of a radioactive substance should be consumed along with a small meal. The speed at which food travels through the digestive system can be monitored by using a camera at certain intervals to determine where the radioactive food is. If the emptying occurs too quickly, it could signal the presence of flushing syndrome.e.
  • A TOGD oes-gastro-duodenal transitD)  is in fact   consuming a barium drink in front of an x-ray machine. Barium is a chalky liquid that appears on an x-ray. 
  • Gastroscopy isusing a small flexible tube with a camera and an endoscope light to examine the upper part of the digestive system, including the esophagus, stomach and duodenum.duodénum.


The treatment of hunting syndrome begins with the adoption of certain dietary modifications. They often help reduce symptoms during the healing period following surgery. Sometimes, medication may also be needed to slow down gastric emptying eg. : ocreotide or to reduce the absorption of carbohydrates eg. : acarbose. Finally, if the hunting syndrome persists despite dietary changes and medication, surgery may be necessary.saire.

Dietary modifications

At the nutritional level, the changes aim to ensure adequate nutrition, prevent or correct nutritional deficiencies, reduce gastrointestinal symptoms, limit weight loss and promote recovery in individuals who have undergone gastric surgery. Dietary modifications that are generally recommended for hunting syndrome include:

  • Eat small, frequent meals throughout the 6 or more day. This helps reduce the volume of food that is spilled into the small intestine and the risk of triggering symptoms of the syndrome.me.
  • Drink fluids at least 30 to 60 minutes before or after meals, as they drain faster than solids. This also helps reduce the volume in the stomach and the risk of triggering symptoms of the syndrome..
  • Make sure you have adequate hydration on a daily basis by drinking enough fluids between meals.s.
  • Eat slowly and chew food well.
  • Avoid foods that are too hot or too cold.
  • Use seasonings and spices according to individual tolerance.
  • Avoid alcoholic drinks.
  • Promote complex carbohydrates ex. : whole grains, vegetables, legumes, etc. simple carbohydrates eg. : sugar, lactose, juice, sugary drinks, etc.c.).
  • Avoid or limit lactose, a simple carbohydrate that is often poorly tolerated eg. : milk.).
  • Promote fiber, as it slows gastric emptying and moderates the absorption of carbohydrates..
  • Adopt a diet higher or lower in lipids depending on the presence or absence of steatorrhea..
  • Consume a protein food with each meal eg. : eggs, meat, fish, cheese, tofu, etc.).
  • Extend 30 minutes after meals to slow gastric emptying..
  • Take somenutritional supplements if necessary eg. : iron, vitamin BB12, calcium, etc. and make sure they are low in carbohydrates and lactose free. This is because flushing syndrome and gastric surgeries can decrease the absorption of certain nutrients.nts.
  • Use dietary fiber supplements, such as guar gum, pectin, and glucomannan. Dietary fiber supplements increase the viscosity of food, which helps slow gastric emptying. In addition, since fiber uses water to promote bowel movement, it is important to get adequate hydration when taking these dietary supplements.es.

Finally, as with all nutritional recommendations, those for hunting syndrome should also be tailored to the symptoms and unique needs of each individual. Food personalization is essential for the development of an effective nutritional approach.e.



  1. Bouthillier, Lise. January 2019. Diseases of the digestive tract. NUT 2047 Clinical nutrition 2. Montreal: University of Montreal.al.
  2. https://www.cancer.ca/fr-ca/cancer-information/diagnosis-and-treatment/managing-side-effects/dumping-syndrome/regionqc#::textLe20syndrome20de20chasse20est,parler20de20vidange20gastrique20rapideque%20rapide
  3. https://badgut.org/centre-information/sujets-de-a-a-z/syndrome-de-chasse/langfrfr
  4. https://badgut.org/centre-information/sujets-de-a-a-z/syndrome-de-chasse/langfrfr


Article written by:

Marie-Noël Marsan, Nutritionist