What is Vitamin K deficiency?

Vitamin K deficiency is rare since most people get adequate amounts from their diet. Additionally, bacteria in your large intestine make vitamin K.

The main groups at risk of vitamin K deficiency are newborn babies (since it’s not present in breastmilk), and people with digestive conditions like cystic fibrosis, celiac disease, and short bowel syndrome.

Common vitamin K deficiency symptoms:

  • Bruising
  • Bloody nose
  • Blood in stool
  • Blood in urine
  • Bone weakness
  • Osteoporosis
  • Cardiovascular issues

What causes a vitamin K deficiency?

  • A diet lacking in vitamin K-rich foods
  • Cystic fibrosis
  • Celiac disease
  • Lactose intolerance
  • Pancreatitis
  • Short bowel syndrome
  • Coumarin medications

Further reading: Harvard School of Public Health, National Library of Medicine