What does vitamin B12 mean?

Definitions for vitamin B12
vitamin b12

This dictionary definitions page includes all the possible meanings, example usage and translations of the word vitamin B12.

Princeton's WordNet

  1. vitamin B12, cobalamin, cyanocobalamin, antipernicious anemia factornoun

    a B vitamin that is used to treat pernicious anemia


  1. vitamin B12noun

    The compound cobalamin or cyanocobalamin.


  1. Vitamin B12

    Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, in both fatty acid and amino acid metabolism. It is important in the normal functioning of the nervous system via its role in the synthesis of myelin, and in the circulatory system in the maturation of red blood cells in the bone marrow. Plants do not need cobalamin and carry out the reactions with enzymes that are not dependent on it.Vitamin B12 is the most chemically complex of all vitamins, and for humans, the only vitamin that must be sourced from animal-derived foods or from supplements. Only some archaea and bacteria can synthesize vitamin B12. Most people in developed countries get enough B12 from the consumption of meat or foods with animal sources. Foods containing vitamin B12 include meat, clams, liver, fish, poultry, eggs, and dairy products. Many breakfast cereals are fortified with the vitamin. Supplements and medications are available to treat and prevent vitamin B12 deficiency. They are taken by mouth, but for the treatment of deficiency may also be given as an intramuscular injection.The most common cause of vitamin B12 deficiency in developed countries is impaired absorption due to a loss of gastric intrinsic factor (IF) which must be bound to a food-source of B12 in order for absorption to occur. A second major cause is age-related decline in stomach acid production (achlorhydria), because acid exposure frees protein-bound vitamin. For the same reason, people on long-term antacid therapy, using proton-pump inhibitors, H2 blockers or other antacids are at increased risk. The diets of vegetarians and vegans may not provide sufficient B12 unless a dietary supplement is consumed. A deficiency in vitamin B12 may be characterized by limb neuropathy or a blood disorder called pernicious anemia, a type of megaloblastic anemia, causing a feeling of tiredness and weakness, lightheadedness, headache, breathlessness, loss of appetite, abnormal sensations, changes in mobility, severe joint pain, muscle weakness, memory problems, decreased level of consciousness, brain fog, and many others. If left untreated in infants, deficiency may lead to neurological damage and anemia. Folate levels in the individual may affect the course of pathological changes and symptomatology of vitamin B12 deficiency. Vitamin B12 was discovered as a result of pernicious anemia, an autoimmune disorder in which the blood has a lower than normal number of red blood cells, due to a deficiency in vitamin B12. The ability to absorb the vitamin declines with age, especially in people over 60 years old.


  1. vitamin b12

    Vitamin B12, also known as cobalamin, is a water-soluble vitamin that plays essential roles in the proper functioning of the brain, the nervous system, and the formation of red blood cells. It is involved in the metabolism of every cell of the human body, particularly affecting DNA synthesis, fatty acid, and amino acid metabolism. This nutrient can be obtained through certain foods and supplements, however, the body is capable of storing several years' worth of vitamin B12, so a deficiency of this vitamin is not common. Deficiency can lead to a wide range of symptoms, including fatigue, weakness, constipation, loss of appetite, and weight loss.

Matched Categories

How to pronounce vitamin B12?

How to say vitamin B12 in sign language?


  1. Chaldean Numerology

    The numerical value of vitamin B12 in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of vitamin B12 in Pythagorean Numerology is: 9

Examples of vitamin B12 in a Sentence

  1. Maggie Moon:

    Water warms you up another way as well. It helps power your metabolism, and a sluggish metabolism translates into less overall body heat. Aim for the requisite eight glasses a day at a minimum, recommended Maggie Moon, but always drink more before and after workouts. RELATED : 12 Reasons Dehydration Is Bad for Your Body You don't consume enough vitamin B12 This nutrient found only in animal products plays big role in preventing big chills. The body needs vitamin B12 to make red blood cells, which carry oxygen through your system.

  2. Bruce Willis:

    A brain MRI can tell us if certain parts of the brain are shrinking or showing signs of atrophy. We will do some blood tests to make sure we’re not missing some treatable causes of cognitive impairment like thyroid disease or vitamin B12 deficiency as well, and oftentimes, we also will do brain metabolism imaging.

  3. Margarita Rohr:

    Vitamin B12 deficiency can be caused by a poor diet, so aim to get more lean meat, fish, and dairy into your meals. But sometimes low levels are triggered by an absorption issue. If your diet is high in B12 but you shiver all the time, check in with your doctor for a vitamin B12 test. RELATED : 21 Important Facts About Vitamin B12 Deficiency You're a woman Find yourself in a constant battle with your spouse or male officemates for control of the thermostat ? Turns out that feeling cold really is a gendered condition. In general, women are better at conserving heat than men.

Translations for vitamin B12

From our Multilingual Translation Dictionary

  • وٹامن بی 12Urdu

Get even more translations for vitamin B12 »


Find a translation for the vitamin B12 definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Use the citation below to add this definition to your bibliography:


"vitamin B12." Definitions.net. STANDS4 LLC, 2024. Web. 18 Jul 2024. <https://www.definitions.net/definition/vitamin+B12>.

Discuss these vitamin B12 definitions with the community:


    Are we missing a good definition for vitamin B12? Don't keep it to yourself...

    Image or illustration of

    vitamin B12

    Credit »

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Browse Definitions.net


    Are you a words master?

    a state of dishonor
    A crate
    B ignominy
    C conveyance
    D scholastic

    Nearby & related entries:

    Alternative searches for vitamin B12: