The Importance of Vitamin K for Children’s and Adults’ Health

Carlos Sánchez 5 min. of reading Vitamins Leave a comment

Vitamin K plays a crucial role in maintaining good health:

Supports blood clotting: Vitamin K activates the proteins necessary for blood coagulation, a vital process that prevents excessive bleeding. A deficiency in this vitamin can lead to bleeding disorders, which is particularly dangerous for newborns and individuals with certain medical conditions.
Promotes bone health: This vitamin contributes to bone mineralisation, the process by which bones gain strength and density. Studies indicate that an adequate intake of vitamin K is associated with a lower risk of fractures and osteoporosis, especially in older adults.

In this article, we will explain how this vitamin benefits both children and adults, highlighting its role in different aspects of health.

Index

1 Why Is Vitamin K Important for Children?
2 What About Newborns’ Health?
3 What Is Vitamin K Used for in Adults?
4 What Is the Recommended Vitamin K Intake for Children and Adults?
5 How Can I Tell If I Have a Vitamin K Deficiency?
6 Who Should Consider Vitamin K Supplementation?

Why Is Vitamin K Important for Children?

The role of vitamin K2 is to activate certain proteins in the body, including osteocalcin and matrix Gla protein (MGP) in the arteries, as well as clotting factors in the liver.

Osteocalcin is responsible for binding calcium to the bone matrix. Without sufficient intake, osteocalcin remains inactive and is unable to bind calcium effectively. Additionally, matrix Gla protein (MGP) prevents calcium from circulating freely and accumulating in the arteries, provided there is enough K2 available in the body.

If the body lacks sufficient Menaquinone-7 (MK-7), calcium cannot be properly processed for bone development. Children require higher amounts of vitamin K for their growth and development.

If your little ones do not get enough vitamin K from their diet, ensure they receive the necessary amount through food supplements, always consulting a paediatrician first.

What About Newborns’ Health?

Although vitamin K is commonly associated with blood clotting and concerns about clots and arterial blockages, it plays a crucial and positive role in overall health.

It is so important that newborns receive an injection of this vitamin to prevent Haemorrhagic Disease of the Newborn (HDN), a condition linked to a lack of clotting factors due to insufficient vitamin K levels.

This happens because vitamin K does not cross the placenta, and breast milk contains low levels of it, leaving babies at risk until their gut flora begins to produce it. A deficiency of vitamin K in infants can lead to brain damage, in some cases severe.

What Is Vitamin K Used for in Adults?

Vitamin K serves various functions in adults, particularly in preventing chronic diseases and maintaining joint health.

Prevents chronic diseases: It plays a key role in fighting cardiovascular diseases, one of the leading causes of death worldwide. Studies suggest that this vitamin helps prevent arterial calcification, a process where calcium deposits build up in the arteries, reducing their elasticity and function.
Improves joint health: As people age, the risk of developing joint diseases such as arthritis increases significantly. Research indicates that vitamin K may help alleviate symptoms associated with these degenerative conditions.

What Is the Recommended Vitamin K Intake for Children and Adults?

Ensuring an adequate intake is key to healthy development. The recommended vitamin K doses for children and adults, based on different growth stages, are:

Age Group	Recommended Vitamin K Intake (micrograms per day)
Infants 0-6 months	2
Infants 7-12 months	2.5
Children 1-3 years	30
Children 4-8 years	55
Children 9-13 years	60
Teenagers 14-18 years	75
Adult men and older adults	120
Adult women and older adults	90
Pregnant and breastfeeding women	90

How Can I Tell If I Have a Vitamin K Deficiency?

Wondering how to identify a deficiency? Look out for these symptoms:

Easy bruising and bleeding.
Bleeding gums.
Frequent nosebleeds.
Heavy menstrual periods.
Clotting issues in newborns.
Blood in stools.

If you suspect a vitamin K deficiency, it is important to follow a diet rich in vitamin K-containing foods or consider supplementation if food intake is insufficient.

Who Should Consider Vitamin K Supplementation?

Vitamin K supplementation can be an important part of maintaining health, particularly for individuals who may not obtain enough of this essential vitamin through their diet:

People with conditions affecting nutrient absorption: Diseases such as coeliac disease, cystic fibrosis, or inflammatory bowel disease can hinder vitamin K absorption.
People on long-term antibiotic treatments: Antibiotics can reduce the number of gut bacteria that produce vitamin K.
Newborns: Generally, a vitamin K injection is given to newborns to prevent haemorrhagic disease.
People taking anticoagulants: Especially those on warfarin, who need to maintain a consistent vitamin K intake to avoid fluctuations in blood clotting times.

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