Carbohydrates are mainly absorbed in the small intestine, and here’s how that works:

1. Digestion:

   • First, carbohydrates are broken down into simple sugars called monosaccharides. These include glucose, fructose, and galactose. This break down is done by special proteins called enzymes like amylase and disaccharidases.

2. Absorption:

   • SGLT1 Transporter: Glucose and galactose get into the body through a special helper called the SGLT1 transporter. This works by using sodium to help move these sugars from the intestine into the body.
   • Facilitated Diffusion: Fructose, another type of simple sugar, is absorbed differently. It uses a different helper called the GLUT5 transporter. This method can absorb about 8-10 grams of fructose per hour.

3. Statistics:

   • Around 90% of the carbohydrates we eat are absorbed in the small intestine.
   • An average adult usually absorbs about 100-120 grams of glucose every day.

4. Transport to Bloodstream: After these simple sugars are absorbed, they enter the bloodstream through another helper called GLUT2. This is important because it helps keep our blood sugar levels stable, which our bodies need to function well.