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Symptoms
By Mayo Clinic staffWhen symptoms of dumping syndrome occur during a meal or within 15 to 30 minutes following a meal, they may include:
- Nausea
- Vomiting
- Abdominal pain, cramps
- Diarrhea
- Dizziness, lightheadedness
- Bloating, belching
- Fatigue
- Heart palpitations, rapid heart rate
When signs and symptoms develop later, they may include:
- Sweating
- Weakness, fatigue
- Dizziness, lightheadedness
- Shakiness
- Feelings of anxiety, nervousness
- Heart palpitations, rapid heart rate
- Fainting
- Mental confusion
- Diarrhea
Some people experience both early and late signs and symptoms. Conditions such as dizziness and heart palpitations can occur either early or late — or both. No matter when problems develop, however, they may be worse in the aftermath of a high-sugar meal, especially one that's rich in sucrose (table sugar) or fructose (fruit sugar).
Some people also experience low blood sugar (hypoglycemia), related to excessive levels of insulin delivered to the bloodstream as part of the syndrome. Hypoglycemia is more often related to late signs and symptoms. Insulin influences your tissues to take up the sugar present in your bloodstream.
