at increased risk if they do not regularly consume fortified foods or take an appropriate supplement.
People With Digestive Disorders
Certain digestive conditions can interfere with the absorption of vitamin B12.
Examples include:
- Celiac disease
- Crohn’s disease
- Certain stomach disorders
People Who Have Had Certain Surgeries
Some stomach or intestinal surgeries can interfere with the body’s ability to absorb vitamin B12.
People Taking Certain Medications
Long-term use of some medications, including metformin and certain acid-reducing medicines, may affect vitamin B12 absorption in some people.
People should not stop prescribed medication
