Vitamin B12 is an important nutrient that helps the body maintain healthy nerves and blood cells. It also contributes to the production of DNA, the genetic material of all cells. The body does not produce vitamin B12 on its own.Vitamin B-12 is found in the animal products we eat and drink, such as meat, dairy products, and eggs. It is also found in fortified foods such as some cereals, bread, and nutritional yeast.

Adults need about 2.4 micrograms of vitamin B12 per day, while pregnant or breastfeeding women need more. The amount of vitamin B12 needed by infants and children varies depending on their age.

Vitamin B12 plays many important roles in the body. For example, it contributes to the production of DNA and red blood cells. The body also needs vitamin B12 for the development of the central nervous system. It also helps maintain healthy hair, nails, and skin.

While an experienced doctor can identify symptoms and diagnose a vitamin B12 deficiency with a thorough interview and physical examination, a blood test is necessary to confirm the condition. If you are a strict vegetarian, have undergone weight-loss surgery, or have a condition that interferes with food absorption, it is advisable to consult your doctor to have your vitamin B12 levels checked.

Early diagnosis and treatment are important. If left untreated, a deficiency can cause serious neurological problems and blood disorders.