The function of vitamin B12|When to eat and intake

Vitamin B12 is a nutrient that is essential for good health. It plays a crucial role in many physiological processes, including DNA synthesis, red blood cell production, and maintaining normal nerve function. Vitamin B12 is found in animal-derived foods such as meat, eggs, and dairy products. It can also be added to some plant-based foods, such as certain vegetarian meat substitutes, tofu, rice, bread, and breakfast cereals. People who follow a vegan diet or who have certain digestive disorders may be at risk for vitamin B12 deficiency. Symptoms of vitamin B12 deficiency can include anemia, nerve damage, and other health problems. If you are concerned about your vitamin B12 intake, it is a good idea to talk to your doctor about your nutrition and whether you might need to supplement with vitamin B12.


Vitamin B12 plays a number of important functions in the body, including:


  1. DNA synthesis: Vitamin B12 is involved in the synthesis of nucleic acids, especially DNA.
  2. Red blood cell production: Vitamin B12 helps to increase the production of red blood cells, improving anemia.
  3. Normal nerve function: Vitamin B12 protects nerve fibers and is involved in the synthesis of neurotransmitters.
  4. Heart health: Vitamin B12 can lower cholesterol levels and help prevent cardiovascular disease.
  5. Mental health: Vitamin B12 can improve mood and alleviate symptoms of depression.
  6. Bone health: Vitamin B12 can prevent osteoporosis.
  7. Eye health: Vitamin B12 may help prevent eye diseases such as retinal atrophy.
  8. Antioxidant: Vitamin B12 can remove free radicals from the body, protecting cells from oxidative damage.


Most people can get enough vitamin B12 through their diet, but vegans and some other groups, such as elderly people and those with digestive disorders, may be at risk for deficiency. If you are concerned about your vitamin B12 intake, it is a good idea to talk to your doctor about your nutrition and whether you might need to supplement with vitamin B12.



The recommended intake of vitamin B12 depends on your age and sex. According to the US Food and Drug Administration (FDA), the recommended daily intake is as follows:


Adults (age 14 and up): 2.4 micrograms/day

Lactating women: 2.6-2.8 micrograms/day

Pregnant women: 2.6 micrograms/day

Infants (0-6 months): 0.4 micrograms/day

Infants (7-12 months): 0.5 micrograms/day

Children (1-3 years): 0.9 micrograms/day

Children (4-8 years): 1.2 micrograms/day

The recommended intake is the amount of nutrients that should be consumed daily to maintain good health. If you are not getting enough vitamin B12 in your diet, you may need to supplement. If you are concerned about your vitamin B12 intake, it is a good idea to talk to your doctor about your nutrition and whether you might need to supplement with vitamin B12.


Vitamin B12 deficiency can lead to anemia, nerve damage, and other health problems. If you have symptoms of anemia, such as fatigue, dizziness, confusion, pale skin, and rapid heartbeat, it is important to seek medical attention right away.


Vitamin B12 deficiency can have serious consequences, including anemia, nerve damage, and other health problems. Anemia is a condition in which the body does not have enough red blood cells, which can cause fatigue, dizziness, confusion, pale skin, and rapid. If you have these symptoms, it is important to seek medical attention right away.


In addition to anemia, vitamin B12 deficiency can also lead to other health problems, including:


  • Nerve damage: Vitamin B12 is involved in the synthesis of neurotransmitters, and deficiency can lead to nerve damage.
  • Memory loss: Some research suggests that vitamin B12 deficiency can cause memory loss.
  • Swollen or red tongue: Vitamin B12 deficiency can cause the tongue to become swollen or red.
  • Sensory impairment: Vitamin B12 deficiency can cause sensory impairment in the hands and feet.


Vitamin B12 is mainly found in animal-derived foods, such as:


  • Meat, including beef, lamb, chicken, and pork
  • Eggs
  • Dairy products, including milk, cheese, and yogurt
  • Vitamin B12 can also be added to some plant-based foods, such as certain vegetarian meat substitutes, tofu, rice, bread, and breakfast cereals.

Vegans and some other groups, such as elderly people and those with digestive disorders, may be at risk for vitamin B12 deficiency. If you are a vegan or belong to one of these groups, it is a good idea to talk to your doctor about your nutrition and whether you might need to supplement with vitamin B12.

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