When people with fructose intolerance ingest fructose or sucrose (cane or beet sugar, table sugar), complicated chemical changes occur in the body due to the absence of the enzyme needed to process these sugars.
The disaccharides maltose, sucrose, and lactose cannot be absorbed until they have been separated into simple sugar molecules by their corresponding enzymes present in the cells lining the intestinal tract.
With early diagnosis, fructose intolerance can be successfully treated by eliminating fructose, sucrose, and sorbitol from the diet (less than 40 mg/kg per day).
Sucrose is the same kind of sugar that is found in common granulated sugar, which is why the most common hummingbird feeder recipe uses plain, granulated sugar.
Disaccharide sugars present in the diet are maltose (a product of the digestion of starch), sucrose (table sugar), and lactose (the sugar in milk).
The prognosis depends on how soon the diagnosis is made and how soon fructose and sucrose are eliminated from the child's diet.
Although not common, a deficiency in the enzymes needed to digest lactose, maltose, and sucrose is sometimes present at birth.
A registered dietitian can work with the parents and child to identify and avoid fructose and sucrose foods and beverages.
The flowers that hummingbirds are most attracted to produce nectar that is 25 percent sugars made up of mostly sucrose.
It is important for the child to avoid fructose, sucrose, and sorbitol sources and yet maintain proper nutrition.