
Vitamin B12 Deficiency: Causes, Symptoms, and Treatment - WebMD
Apr 30, 2017 · Vitamin B12 is essential for good health, but some people may not be getting enough. WebMD tells you about symptoms of a vitamin B12 deficiency and how it can be treated.
Vitamin B-12 - Mayo Clinic
Aug 13, 2025 · Vitamin B-12 is a vitamin the body uses to make and support healthy nerve cells. It's also used to make healthy red blood cells and the genetic material inside cells called DNA. Vitamin B-12 …
Vitamin B12 - Wikipedia
Vitamin B12, also known as cobalamin or extrinsic factor, is a water-soluble vitamin involved in metabolism. [2] One of eight B vitamins, it serves as a vital cofactor in DNA synthesis and both fatty …
Signs and Symptoms of Vitamin B12 Deficiency - Healthline
Dec 14, 2023 · Vitamin B12 is an essential nutrient that your body needs for processes like DNA synthesis, energy production, and central nervous system function (1). Studies suggest that up to …
6 Sneaky Signs You're Not Getting Enough Vitamin B12 - EatingWell
Nov 21, 2025 · Vitamin B12 deficiency symptoms can be subtle. Learn 6 signs of low B12, plus tips for increasing your intake and when to see a health care provider.
Vitamin B12 - Health Professional Fact Sheet
Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication. Because vitamin B12 contains the …
What Happens to Your Brain and Energy Levels When You Take Vitamin B12
Nov 5, 2025 · Vitamin B12 helps your nervous system function properly, which supports brain health, mood, and energy levels. Getting enough B12, especially if you are deficient, can help prevent …
18 Foods That Are Highest in Vitamin B12 - Health
Nov 19, 2025 · Foods like crab, trout, salmon, seaweed, and clams are high in vitamin B12. These and other B12-rich foods can offer health benefits.
Vitamin B12 - The Nutrition Source
Vitamin B12, or cobalamin, is naturally found in animal foods. It can also be added to foods or supplements. Vitamin B12 is needed to form red blood cells and DNA. It is also a key player in the …
Vitamin B12: Purpose, benefits, and sources - Medical News Today
Jun 11, 2025 · Vitamin B12 (cobalamin) is essential for the health of nerve tissue, brain function, and red blood cells. Sources include meat, eggs, and some yeast products. Vitamin B12 is the largest and …