Digestive System
Small Intestine
The small intestine is where most digestion and nutrient absorption happens. Its folded lining, covered in tiny finger-like villi, pulls vitamins, minerals and energy from your food.
~6 m
Length
~30 m²
Absorptive surface area
3
Sections
Where is the small intestine located?
Coiled in the center of the abdomen, between the stomach and the large intestine.
What does the small intestine do?
- Completes digestion with enzymes and bile
- Absorbs sugars, amino acids and fats
- Absorbs vitamins and minerals
- Hosts much of the immune system (gut lymphoid tissue)
- Moves food along by peristalsis
Key parts of the small intestine
Duodenum
The first section, where bile and pancreatic juice join the food.
Jejunum
The middle section, where most nutrients are absorbed.
Ileum
The final section, which absorbs vitamin B12 and bile salts.
Villi
Finger-like projections that multiply the surface area.
How to keep your small intestine healthy
- Eat a fibre-rich, varied diet
- Drink enough water
- Include fermented foods for gut bacteria
- Eat slowly and chew well
- See a doctor for persistent bloating or pain
Holistic approach
Holistic Ways to Support Your Small Intestine
Gentle everyday practices plus three traditional herbs, with honest notes on evidence and safety.
Mindful symptom tracking
Hydration as appropriate
Stress reduction
Regular sleep habits
Herbs & tinctures
At a glance
- Organ: Small Intestine
- Body system: Digestive System
- Length: ~6 m
- Absorptive surface area: ~30 m²
Did you know?
Despite its name, the small intestine is about four times longer than the large intestine.
7-Day Small Intestine Meal Plan
A week of simple meals built around balanced, tolerance-based eating; disorders may require tailored diets, with 21 easy recipes and a grocery list.
Educational note: This page is for general anatomy education and does not provide medical diagnosis or treatment advice. Talk to a healthcare professional about any concerns.
Shop by organ
Small Intestine Health Products
Hand-picked products to support your small intestine.
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