Duodenum
- Calcium
- Thiamine
- Iron
- Protein
- Carbohydrate
Jejunum/Proximal ileum
- Fat
- Vitamins A, D, E, K
- Water-soluble vitamins
- Folate
- Essential minerals
- Copper
- Zinc
- Phosphorous
- Magnesium
Terminal ileum
- Vitamin B12
- Bile salts
Reference:
The SAGES Manual: A Practical Guide to Bariatric Surgery edited by Ninh T. Nguyen, Eric DeMaria, Sayeed Ikramuddin, Matthew M. Hutter