Vitamin B12(ビタミンB12)


Characteristics of nutrients

  • It is mainly present in animal foods (rarely in vegetable foods)
  • Water-soluble vitamin
  • Oxidized by light and air
  • Called “vitamins of hematopoiesis”
  • Helps to synthesize hemoglobin
  • It is based on the synthesis of amino acids together with folic acid
  • Attention when the stomach is weak because it is absorbed together with the secretory substance of the stomach


Function of nutrients

  • Prevention of malignant anemia
  • Synthesize nucleus of nerve cell
  • Protein synthesis
  • Synthesis of nucleic acids
  • Synthesis of erythrocytes
  • Preparing the rhythm of sleep


When nutrients are deficient

  • Malignant anemia (headache, dizziness, nausea, loss of appetite)
  • Numbness of limbs, decrease of concentration
  • Stiff shoulders, low back pain, neuralgia



When nutrients overdose

  • No worry of excessive intake
  • Even if overdosed, it is not absorbed more than necessary


Foods rich in nutrients

  • a shijimi clam
  • Cow lever
  • asari clam
  • Pacific saury
  • salmon roe



Nutrient list
Click for details

EnergyPantothenic acid
Saturated fatty acids n-3 fatty acids
Dietary fiber n-6 fatty acids
Vitamin ACalcium
Vitamin DMagnesium
Vitamin ERin
Vitamin KZinc
Vitamin B1Copper
Vitamin B2Manganese
Vitamin B6Lodine
Vitamin B12Selenium
Vitamin CChromium
Folic acidiron