Medically reviewed by Jonathan Purtell, RDN Key Takeaways Vitamin B12 supports energy, red blood cell formation, nerve ...

This essential vitamin is generally considered safe, even at high doses. However, most people get enough B12 through diet alone, and unnecessary supplementing may lead to negative side effects.

Doctors may recommend vitamin B12 supplements for those with certain health conditions or dietary restrictions. The dosage can vary based on factors including age, sex, and medical history. Vitamin ...

Vitamin B12 is found only in animal foods, but in good amounts. So unless you’re a vegan, chances are you’re getting plenty of it in your diet. Yet many older adults are deficient in the vitamin. Why?

Vitamin B12 is one of the essential vitamins for the human body. It helps in producing red blood cells and DNA, promotes healthy nerve function and supports the immune system. As per FDA, the ...

Vitamin B12 supports red blood cells, nerve health, and DNA production, with adults needing about 2.4 micrograms daily. Shellfish like clams, oysters, and mussels are the richest sources, while dairy, ...

Take vitamin B12 on an empty stomach in the morning or early afternoon to maximize absorption and avoid sleep disruptions. Vegans, older adults, and those with certain health conditions affecting ...

If a person does not get enough vitamin B12, a doctor may suggest supplements containing more than the daily recommended dose. The body does not store excess vitamin B12, so taking extra is not ...

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.

Dear Dr. Roach: I am 73, and I was worried about dementia. Turns out, I am "normal." However, the neurologist told me to take 2,000 mcg of B12 daily. My multivitamin has 100 mcg, which is 4,167% of ...

A vitamin B12 deficiency does not appear to be a sign of cancer. However, research suggests that there might be an association between vitamin B12 deficiency and cancer risk, particularly stomach and ...