Vitamin K is a fat soluble vitamin. ADEK are all fat solubles.  This means absorption happens in the the small intestine,with fats.  The gallbladder and pancreas provide the  enzymes that break down the fat and fat soluble vitamins small enough that the intestinal cells can absorb. So you have to ingest K, have the enzyme present and the intestinal wall healthy to absorb K.

Any damage to the liver, gallbladder, and pancreas and stomach/intestine can lead to malabsorption of all the fat soluble vitamins A, D, E & K.

Vitamin K is used by the body in the blood clotting process. The liver, which produces the enzyme to use K also uses K, once absorbed, to produce prothrombin which clots blood.  Bone marrow,blood, is effected by K, thus osteporisis is linked to lack of vitamin K.

Vitamin K converts glucose to glycogen in the intestine and studies have shown Type 2 diabetics to be low on vitamin K.

Vitamin K Deficiency Possibles:

Heavy menstrual bleeding

Gastrointestinal bleeding

Blood in Urine

Nosebleeds

Eye Hemorrhages

Anemia

Bleeding gums

Hematomas

Hemorrhaging

Ovarian Hemorraging

Bruising

Purpura

Osteoporosis

Fractures

Liver Cancer

Prostate Cancer

Calcification of Soft Tissue, especially heart valves

Calcium Deposits

Alzheimers

Hyper pigmentation

An interesting add on vitamin K, a form of K, K2 is PRODUCED, in the intestines by bacteria, the ‘good ones’ . If the bacteria are not present, through stomach/intestine damage, being killed off by antibiotic, then K2 is not produced.

This is yet another which came first, chicken or egg vitamin.  It is needed to use itself.

If you have had any issues with gluten intolerance, Celiac, Cystic Fibrosis, stomach surgery, ulcers, Crohns, alcoholism, a stomach virus, taken antibiotics… you need vitamin K.