Vitamin B12 is a vital nutrient with numerous health benefits. Learn more about what it does in the body and how to get enough of it.

Vitamin B12 deficiency develops gradually and affects both the blood and nervous system. It causes anemia, fatigue, numbness, ...

Vitamin B12 supplements may help treat certain symptoms of kidney disease. They can assist in preventing anemia and may also treat vitamin B12 deficiencies, which are common in people with kidney ...

Not only is vitamin B12 crucial for energy, but research also points to its potential in supporting mental health and ...

Dear Dr. Roach: My stepdad is 84 years old and having problems with B12 deficiency. He is taking B12 shots, 1,000 mcg once a week, in addition to taking a 5000 mcg B12 vitamin daily. The numbers come ...

DEAR DR. ROACH: My stepdad is 84 years old and having problems with B12 deficiency. He is taking B12 shots, 1,000 mcg once a week, in addition to taking a 5000 mcg B12 vitamin daily. The numbers come ...

Over the past few years, I have experienced low-normal hemoglobin on my annual physical. It was suggested that this could be the anemia of chronic disease. I recently read that metformin can cause B12 ...

A Schilling test is also known as a Vitamin B12 absorption test. It was formerly used to determine whether a person was absorbing vitamin B12 normally. If not, then the test could pinpoint the cause ...

Before you blame your persistent exhaustion or inability to focus on burnout, consider the silent drain of Vitamin B12 deficiency. Optimizing this single vitamin can be the simple, powerful change ...

Sarah is a registered dietitian and freelance writer passionate about connecting people to information that will help them improve their mental and physical health. She’s a big believer that food is ...