Vitamin B12 is needed for healthy nerve function and red blood cell production. Deficiency is relatively common in India, including among people following vegetarian or vegan diets, since B12 is naturally found mainly in animal products. Low B12 can contribute to anaemia and fatigue, and is sometimes checked as part of preconception or fertility investigations. If a blood test shows low B12, your doctor will advise on appropriate correction, which may involve dietary changes or supplementation; this should not be started or dosed without medical guidance, particularly since long-term deficiency can have other health effects that need proper assessment.
Also known as: B12 deficiency, cobalamin
Related India guides
Sources
- Indian Council of Medical Research (icmr.gov.in)
- Ministry of Health & Family Welfare, Government of India (mohfw.gov.in)
Last reviewed: 9 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.