Some people have the inability to process sucrose as they are sucrose intolerant. The official name of the condition is a mouthful, Genetic Sucrase-Isomaltase Deficiency (GSID) and is equally prevalent in males and females. This disorder is also known as Congenital Sucrase-Isomaltase Deficiency (CSID). The function of the sucrase enzyme is to aid in the breakdown of sucrose (table sugar) into its two sub-parts, glucose and fructose, which are then used by the body as fuel. This enzyme is produced in the small intestine. Isomaltase is the enzyme that helps the body digest starches.
GSID/CSID patients may have gastrointestinal symptoms that range from mild to severe when dietary sucrose moves through the small intestine undigested. The undigested sugar enters the colon, where bacteria exist. The bacteria feeds off of the increased amount of sugar, and fermentation occurs. The results are increased gas production and diarrhea. When substances are not absorbed in the colon and retain water, osmotic diarrhea occurs. Symptoms may differ between infants, children, and adults.
Fruits low in Sucrose (sugar) that contain less than 1% of that particular sugar.
pears – all except brown
sultanas and currants
(Source: Women’s & Children’s Hospital)