Incidence and prevalence varies depending on the procedure or disease leading to dumping syndrome.

• The incidence of patients who have undergone gastric surgery ranges from approximately 20,000 to 50,000 per 100,000.^[1]
• Out of these about 1-5% reported severe symptoms.
• After truncal vagotomy with drainage the incidence of dumping syndrome has been reported to be 6,000 to 14,000 per 100,000.
• After proximal vagotomy without drainage the incidence of dumping syndrome has been reported to be is less than 2,000 per 100,000.
• After partial gastrectomy the incidence of dumping syndrome has been reported to be 14,000 to 20,000 per 100,000.
• Proximal vagotomy is a fairly newer procedure that leads to lower incidence rates due to the minimized interference in gastric emptying.^[2]

• Since the advent of proton pump inhibitors, the need for surgery has decreased and so has the incidence of dumping syndrome.
• In gastric surgery 1 out of 10 people develop dumping symptoms.
• In esophagectomy 1 out of 2 people developed symptoms of dumping syndrome.

• Prevalence has not been well studied in gastric dumping syndrome.^[3]

• In 2012, the mortality rate of bariatric surgery leading to dumping syndrome was approximately 1,000 per 100,000 individuals.^[4]

• People aged 45-74 are 2 times more likely to be diagnosed with dumping syndrome
• Children aged less than 1 year are 3 times less likely to be diagnosed with dumping syndrome^{_The_Award-winning_Symcat_App-5|[5]}
• Toddlers and preschoolers are are 7 times less likely to be diagnosed with dumping syndrome^{_The_Award-winning_Symcat_App-5|[5]}
• Children aged 5 to 14 years old are 10 times less likely to be diagnosed with dumping syndrome^{_The_Award-winning_Symcat_App-5|[5]}
• Elderly people whose ages are over 75 years old are 11 times less likely to be diagnosed with dumping syndrome^{_The_Award-winning_Symcat_App-5|[5]}
• Teenagers and adults aged 15 to 29 years old are 23 times less likely to be diagnosed with dumping syndrome^{_The_Award-winning_Symcat_App-5|[5]}

• Females have a higher chance of being diagnosed with dumping syndrome in comparison to men.^{_The_Award-winning_Symcat_App-5|[5]}

• People who are of white ethnicity tend to be more likely diagnosed with dumping syndrome.^{_The_Award-winning_Symcat_App-5|[5]}