Vitamin K
Vitamin K was introduced in Denmark in 1929.
H.Dam was discovered by chance while experimenting with chickens,
It is a vitamin that dissolves in fats and oils (fat-soluble vitamins).
Named after the German word “Koagulation" which means “blood coagulation",
It was named Vitamin K.
Types of Vitamin K
There are two types of natural vitamin K.
Vitamin K1 (phylloquinone) made from plants and
Vitamin K2 (menaquinone) made by bacteria and animals.
Generally, except for natto,
Vitamin K that people get from food is high in phylloquinone.
Of particular nutritional importance
Menaquinone-4, which is widely distributed in animal foods,
It is Menaquinone-7 contained in natto.
It is found in spinach, broccoli, cabbage, tomatoes and seaweeds.
It is mainly produced by microorganisms. Included in animal foods such as cheese.
Among the menaquinones, menaquinone-7 has high expectations for osteoporosis. Included in natto.
Vitamin K absorption
Vitamin K, which is dissolved in food and exists in food, is
After eating, it is processed in the body and absorbed in the upper part of the small intestine.
Absorbed vitamin K
With other fat-soluble vitamins
Incorporated into protein balls (chylomicrons),
It is carried to the whole body through the lymph vessels and on the blood.
Vitamin K dissolves in oil, so
The absorption rate depends on the amount of oil in the food you eat together.
It will change a lot.
The absorption rate of vitamin K in healthy adults is 70-80% when it is high.
If it is low, it is said to be 10 to 20%.
When taking vitamin K,
Make a ball of protein (chylomicrons) that will carry you
Take protein firmly and with oil.
How Vitamin K Works
The functions of vitamin K are as follows.
Stop blood
Make bones strong
Prevents arterial calcification
Symptoms of vitamin K deficiency
Symptoms of vitamin K deficiency include:
Bleeding tendency
Blood coagulation time extension
People who are prone to vitamin K deficiency
Baby vitamin K is also made by intestinal bacteria.
Therefore, in newborns with unestablished gut flora
It is prone to deficiency.
Vitamin K is low in breast milk, so
Infant vitamin K deficiency hemorrhage (intracranial hemorrhage)
It is also said that it may occur.
People who have been taking antibiotics for a long time Even if they are antibiotic users
Because the intestinal flora is disturbed
You may fall into a vitamin K deficiency.
People with biliary atresia and liver failure Since bile is required for absorption of vitamin K,
Biliary atresia, liver failure, etc. also threaten deficiency.
Blood coagulation factor and Vitamin K
When vitamin K is deficient in the blood,
Also the substance (blood coagulation factor prothrombin) required when blood clots
I know it will be less.
Increase bone density-Synergistic effect of vitamin K and vitamin D-
Taking Vitamin K2 and Vitamin D3 together
It is said to increase bone density.
For women with osteoporosis
By taking vitamin K2 and vitamin D3
Changes in bone density were measured.
As a result, vitamin K2 and vitamin D3
By taking it at the same time for 2 years or more
It was found that bone density increased.
Foods high in vitamin K
The amount of vitamin K required per serving is 17 μg.
The following vegetables are high in vitamin K.
Shiso
basil
Turnip leaves
spinach