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In the big family of vitamins, there is a special but less concerned vitamin.
Compared with other vitamins, it is the only vitamin that contains metal elements
.
Today I will take you to learn about this vitamin-vitamin B12
.
Vitamin B12 contains the metal element cobalt in its molecule, so it is also called cobalamin.
It is a member of water-soluble vitamins and one of the most complex vitamins.
It cannot be synthesized by the human body and needs to be obtained through diet
.
Compared with other vitamins, vitamin B12 has a larger molecular weight.
After entering the digestive tract, it needs to be combined with a glycoprotein intrinsic factor (IF) secreted by gastric mucosal cells to form a complex and enter the intestine together and be absorbed by the intestine
.
Vitamin B12 that enters the body can participate in the formation of lipoproteins in the nervous tissue, is an indispensable vitamin for the health of the nervous system, and can also promote the development and maturation of red blood cells
.
Vitamin B12 has such an important role, but the unobtrusive reason is that it is not easy to lack
.
The main food sources of vitamin B12 are animal foods, including meat, fish, eggs, etc.
The content of vitamin B12 in milk and dairy products is relatively small, and it is basically not contained in plant foods
.
The human body's vitamin B12 requirement is very small.
For most people, vitamin B12 in a normal diet can meet the body's needs
.
And because vitamin B12 is water-soluble, the unabsorbed will be excreted from the feces, so even if you take medicine, it will generally not make up too much
.
Our average daily intake of vitamin B12 is 3.
5~7μg.
Scientists have done experiments and increased the oral dose to 3000μg.
No obvious side effects were observed
.
Most vitamin B12 deficiencies are caused by malabsorption, which is common in the elderly, indigestion, gastrointestinal diseases caused by certain reasons, and dietary deficiencies are common in vegetarians
.
People who are chronically deficient in vitamin B12 will have neurological symptoms such as lack of energy, apathy, depression, forgetfulness, and various cognitive dysfunctions; it may also induce megaloblastic anemia and hyperhomocysteinemia
.
Compared with other vitamins, it is the only vitamin that contains metal elements
.
Today I will take you to learn about this vitamin-vitamin B12
.
Vitamin B12 contains the metal element cobalt in its molecule, so it is also called cobalamin.
It is a member of water-soluble vitamins and one of the most complex vitamins.
It cannot be synthesized by the human body and needs to be obtained through diet
.
Compared with other vitamins, vitamin B12 has a larger molecular weight.
After entering the digestive tract, it needs to be combined with a glycoprotein intrinsic factor (IF) secreted by gastric mucosal cells to form a complex and enter the intestine together and be absorbed by the intestine
.
Vitamin B12 that enters the body can participate in the formation of lipoproteins in the nervous tissue, is an indispensable vitamin for the health of the nervous system, and can also promote the development and maturation of red blood cells
.
Vitamin B12 has such an important role, but the unobtrusive reason is that it is not easy to lack
.
The main food sources of vitamin B12 are animal foods, including meat, fish, eggs, etc.
The content of vitamin B12 in milk and dairy products is relatively small, and it is basically not contained in plant foods
.
The human body's vitamin B12 requirement is very small.
For most people, vitamin B12 in a normal diet can meet the body's needs
.
And because vitamin B12 is water-soluble, the unabsorbed will be excreted from the feces, so even if you take medicine, it will generally not make up too much
.
Our average daily intake of vitamin B12 is 3.
5~7μg.
Scientists have done experiments and increased the oral dose to 3000μg.
No obvious side effects were observed
.
Most vitamin B12 deficiencies are caused by malabsorption, which is common in the elderly, indigestion, gastrointestinal diseases caused by certain reasons, and dietary deficiencies are common in vegetarians
.
People who are chronically deficient in vitamin B12 will have neurological symptoms such as lack of energy, apathy, depression, forgetfulness, and various cognitive dysfunctions; it may also induce megaloblastic anemia and hyperhomocysteinemia
.
