What is fructose = fruit sugar
Like grape sugar (glucose) fructose is a monosaccharide, which is a natural constituent of numerous foods, in particular of fruits.
What is the cause for fructose intolerance?
The small intestinal mucosa’s surface area is enlarged by numerous filamentous structures – so-called villi – which serve to supply the blood with nutrients through the intestinal walls.
In the upper small intestine, fructose is resorbed by means of a specific transport protein, which is a type of glucose transporter (GLUTs).
With people who suffer from fructose intolerance, the respective transporter operates slower, which causes larger amounts of fructose to enter the colon.
In the colon, intestinal bacteria metabolize the fructose to hydrogen, carbon dioxide, and short-chain fatty acids. Read more...
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