💊 Absorption of Vitamin B12

Let’s understand this in a very simple way.

What is Vitamin B12?
Vitamin B12 is important for:

• Red blood cell formation
• Nerve function
• DNA synthesis

Where is Vitamin B12 absorbed?

✅ Correct Answer: (c) Ileum

Why ileum?
Vitamin B12 is absorbed in the terminal ileum with the help of:

• Intrinsic factor

👉 Intrinsic factor is produced by the stomach.

What happens if absorption fails?

• Vitamin B12 deficiency
• Pernicious anemia
• Nerve problems

Why other options are not correct?

• (a) Duodenum → ❌ Mainly iron absorption
• (b) Jejunum → ❌ Absorbs many nutrients, but not B12 specifically
• (d) Colon → ❌ Mainly water absorption

Simple Exam Trick:
B12 + Intrinsic factor → Ileum

📌 Disclaimer: For exam preparation only. Follow nutrition and medical guidelines in practice.

💚 Exam Objective Nursing – Asha D
Concept clarity • Easy recall • Nursing success