Vitamins
Vitamin B12: Normal Levels and What Low B12 Means
Vitamin B12 is needed for healthy nerves, red blood cells and energy. Deficiency is very common in India, especially among vegetarians and vegans, because B12 comes mainly from animal foods.
Normal Vitamin B12 range
What a high Vitamin B12 means
High B12 is usually harmless and often reflects supplements. Rarely, it relates to liver or other conditions.
Common causes:
- Vitamin B12 supplements or injections
- Rarely, liver or bone-marrow conditions
What a low Vitamin B12 means
Low B12 can cause tiredness, weakness, tingling or numbness in the hands and feet, poor memory, a sore tongue and anemia. Nerve symptoms can become long-lasting if untreated.
- Vegetarian or vegan diet
- Poor absorption (gut conditions, age)
- Metformin (diabetes medicine)
- Low intake over time
Food & lifestyle that help
Favour
- Milk, curd and paneer
- Eggs
- Fortified foods (some cereals, plant milks)
- Fish, meat if you eat them
- A B12 supplement if you're vegetarian/vegan
Limit
- Relying only on plant foods for B12 (they don't provide it)
When to see a doctor
See a doctor if you have tingling, numbness or persistent tiredness, or a low level — significant deficiency may need supplements or injections and the cause should be checked.
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Make my free plan →Frequently asked questions
What is a normal vitamin B12 level?
Roughly 200–900 pg/mL, though many people have symptoms below about 300 pg/mL. Labs vary.
Why do vegetarians get low B12?
B12 comes almost entirely from animal foods, so vegetarians and vegans often need fortified foods or a supplement to maintain healthy levels.