What does vitamin K do?

about Vitamin K

Want to make your body stronger? Vitamins are the best helpers. Most importantly if you have weak bone density and blood. Vitamin K is the exact natural medicine which your body requires. It helps to make various proteins that are needed for blood clotting and the building of bones.

The risk of low levels of blood clotting factors in the body can lead to unusual bleeding. You can also purchase vitamin K as a standalone supplement or in combination with specific nutrients, such as magnesium, as vitamin D and calcium.

Several scientific researchers also conclude reduced risk of peripheral arterial disease in people taking vitamin K. The risk factors of high glucose levels (hyperglycemia) in the body leads to depression, anxieties and cognitive impairment. Vitamins help in the normal  growth and development of the body.

Brief History

In 1929, Danish scientist Henrick Dam researched the role of cholesterol by feeding chickens a cholesterol-depleted diet.  Subsequently, both Henrik Dam and Edward Doisy were awarded the Nobel Prize in 1943 for their important roles of discovering Vitamin K and its structure.

 From that time onwards  many researches have been done which have changed the world pertaining to the crucial functions and astonishing health benefits.

Functions of Vitamin K In The Human Body

It plays a vital in promoting bone health, with the intake of the vitamin, it ensures the healthy functioning of the bones and gums  by the action of calcium-binding in the body.

It also helps facilitate energy production in the mitochondria of cells. Vitamin K  also has a major role in production of proteins which helps in the mechanism of blood clotting and also for bone structure.  The use of warfarin, a  blood thinning medication can decrease the antioxidative potential of Vitamin K.

The presence of it in the body includes brain, heart, pancreas, liver and in the bones. The excretion process of vitamin k happens through urine and stool. As it is quickly excreted the toxicity is found to be rare even with the higher intake of it into the body. Usually sometimes high intake occurs with other fat-soluble vitamins.

The requirement of both the vitamin K is necessary. This is to produce prothrombin which is responsible for blood clotting as well as for bone metabolism and heart health.

Minimum Requirement of Vitamin K Required by Human Body

The requirement of it in the body depends of the factors such as age and sex. This is recommended average daily amounts (micrograms (mcg)) in the body listed below:

 LIFE STAGE                                                 REQUIRED QUANTITY

1] Birth to 6 months                                                         2mcg

2] 7 to 12 months                                                              2.5mcg

3] Children 1-3 years                                                       30mcg

4] 4-8 years                                                                       55mcg

5] 9-13 years                                                                      60mcg

6] Teenagers 14-18 years                                                75mcg

7] Adults                                                                            190mcg

8] Pregnant teenagers and women                              75mcg

9] Breastfeeding teenagers and women                        90mcg

Vitamin K Sources

It plays an important role in the development of healthy bones. It has been seen in Some research studies that people who eat more vitamin K-rich food  have shown bones to be stronger and less likely to have other bone problems. Some vitamin K rich food sources are-

  • Collard Greens- 322% DV
  • Mustard Greens- 346%DV
  • Beef Liver- 60%DV
  • Broccoli- 92%DV
  • Brussels Sprouts- 91%DV
  • Chicken- 43%DV
  • Green Bean- 25% DV
  • Kale- 443%DV
  • Natto- 261%DV
  • Spinach- 121% DV
  • Kiwi- 23%DV

Deficiency of Vitamin K

As per studies it was found that deficiency of it lead to bleeding in most of the Asian population when compared to that of  Caucasian population. The deficiency of it can lead to decreased bone strength and risk to some bone related problems such as osteoporosis (breakdown of bone). It  was also found out that it does not pass through the placental barrier and the concentration of this in breast milk found to be low.

This has caused deficiency problems in infants. Due to the decrease in red blood cells and hemoglobin count, lowered the oxygen count in the body which in turn caused a deficiency of oxygen in the body.Severe it deficiency can also leads to increase in the clotting time and thus when bruised or injured the healing process will take more time.

Vitamin K Deficiency Symptoms

The limited amount of blood clotting proteins at birth increases the risk of bleeding in infants if they are not given vitamin K supplements. The following are the most common signs of a deficiency-

1] Bleeding

2] Hemorrhaging

3] A longer time for blood to clot or a prolonged Prothrombin time (as measured in a physician’s office)

4] Osteopenia or osteoporosis

Vitamin K Tablets Precautions And Details

It is always advised to not to take any of supplements without consulting doctor. There should be a diet control for those who use Coumadin for heart problems, clotting disorders, and other conditions.  Calci K2 tablet , Healthvit vitamin K tablets and CM K2 tablet are some of widely used vitamin K medicines.

Overdose Precautions

In case of overdose and serious symptoms such as passing out or trouble breathing visit your nearest hospital. Otherwise, call a poison control center right away.

Possible Side Effects

Some possible side effects are-

  • Pain
  • Swelling,
  • Soreness at the injection site may occur
  • Temporary flushing
  • Taste changes
  • Dizziness
  • Rapid heartbeat
  • Sweating
  • Shortness of breath
  • Bluish lips/skin/nails

 If the side effects are still seen, you are advised to contact your physician immediately.


The advised daily intake for it is based on age and gender moreover Women who are 19 years and above should take a dose of 90 mcg. Men should take a dose of 120 mcg.


Vitamin K is mostly find in green leafy vegetables. It also has various roles in the functioning of the body . It helps your body by making proteins for healthy bones and tissues as well as makes proteins for blood clotting. If you don’t have enough vitamin K as a result, you may bleed too much. Endeavour to include this in your diet for healthy bones and maintaining good health.