By Dr. Liji Thomas, MD A new scientific review weighs natural and synthetic forms of vitamin B12, revealing where ...

Vitamin B12 deficiency can be caused by poor diet or malabsorption, leading to fatigue, muscle weakness, and memory problems.

B12 shots work fast but don’t last long. Most leaves your body within a day, though some is stored in the liver. Regular injections may be necessary to maintain steady levels, especially if you have ...

All kinds of cells in your body need vitamin B12. That includes red blood cells and glial cells – the kind that protect your nerves. But your body doesn't make this nutrient on its own. You have to ...

Vitamin B12 helps build your baby's brain and body. Here's why it's important during pregnancy and how to make sure you're getting enough.

Vitamin B12 deficiency anemia refers to a condition where the body does not have a sufficient amount of healthy red blood cells due to a lack of vitamin B12. Without enough B12, the body may not be ...

Pernicious anemia is an autoimmune condition in which the body cannot absorb vitamin B12 properly. A person with pernicious anemia requires lifelong vitamin B12 supplementation. Vitamin B12 is ...

Metformin is the first therapy for almost everyone with type 2 diabetes, but studies show that the drug creates a risk of vitamin B12 deficiency. Your clinician should test your B12 levels regularly ...

Vitamin B12 (cobalamin) is an important nutrient that strengthens your body's blood cells. It also nourishes your nerve cells and helps keep them healthy. B12 also assists in the formation of DNA.