Cholesterol absorption is a complex process that begins in the stomach and primarily occurs in the small intestine.
Initial Stages in the Stomach
- Enzyme Mixing: Cholesterol absorption starts in the stomach where dietary cholesterol mixes with lingual and gastric enzymes. This initial mixing is crucial for breaking down the cholesterol and preparing it for absorption in the small intestine.
Absorption in the Small Intestine
- Primary Absorption Sites: While cholesterol can be absorbed along the entire length of the small intestine, the main areas for absorption are the duodenum and proximal jejunum.
- Mechanism: In the small intestine, cholesterol is absorbed through a complex process that involves specialized transport proteins found in the intestinal cells.
Summary of Cholesterol Absorption
The table below summarizes the key steps in cholesterol absorption:
| Location | Process | Key Factors |
|---|---|---|
| Stomach | Mixing of dietary cholesterol with gastric and lingual enzymes. | Initial breakdown of cholesterol |
| Small Intestine | Absorption of cholesterol primarily in the duodenum and proximal jejunum | Specialized transport proteins in intestinal cells |
Additional Insights
- Dietary Influence: The amount of cholesterol absorbed can be influenced by dietary factors.
- Individual Variation: Cholesterol absorption can vary from person to person.
