- Atrophic gastritis, in which your stomach lining has thinned
- Pernicious anemia, which makes it hard for your body to absorb vitamin B12
- Surgery that removed part of your stomach or small intestine, including weight loss surgery
- Conditions affecting the small intestine, such as Crohn's disease,celiac disease, bacterial growth, or a parasite
- Heavy drinking
- Immune system disorders, such as Graves' disease or lupus
- Long-term use of acid-reducing drugs ,pantoprazole ,omeprazole, lansoprazole ,rabeprazol .
- -The diabetes medication metformin may interfere with B12 dietary absorption
- pantoprazole may lead to a reduced absorption of vitamin B12.
- Doctor Advice -You can also get vitamin B12 deficiency if you're a vegan (meaning you don't eat any animal products, including meat, milk, cheese, and eggs) or a vegetarian who doesn't eat enough eggs or dairy products to meet your vitamin B12 needs.
- Babies born to mothers who are vegetarians may also not get enough vitamin B12.
Vitamin B12 is vital for the formation of red blood cells, as well as for the proper functioning and health of nerve tissue. If left untreated, vitamin B12 deficiency, also known as B12deficiency, can lead to anemia, as well as nerve and brain damage, which may eventually become irreversible.
a symptom is headache, while a skin rash or swelling are examples of signs.