Vitamin B12, also known as cobalamin, is an essential water-soluble vitamin.
It plays an essential role in the production of your red blood cells and DNA, as well as the proper functioning of your nervous system.
Vitamin B12 is naturally found in animal foods, including meats, fish, poultry, eggs and dairy. However, it can also be found in products fortified with B12, such as some varieties of bread and plant-based milk.
Unfortunately, B12 deficiency is common, especially in the elderly. You’re at risk of deficiency if you don’t get enough from your diet or aren’t able to absorb enough from the food you eat.
Low levels of Vitamin B12 may cause pale, tired-looking skin; abnormal tiredness; feeling of pins and needles around the body; poor mobility, balance and coordination as if the body does not listen to you; frequent mouth ulcers; breathlessness and dizziness; sudden onset of blurred vision; mood changes- depression and anxiety; changes in appetite; rarely, deficiency of Vitamin B12 may cause high temperature- high fever.
High levels of Vitamin B12 normally indicate that a person overdid on supplementation. However, if the levels are high without any known reason, that may indicate liver or kidney problems, diabetes, or even certain forms of leukemia. That requires further investigation by a doctor.