Vitamin K2 MK-4 (Menaquinone-4)

Vitamin K2 MK-4 (menaquinone-4) is a fat-soluble vitamin that activates osteocalcin and matrix Gla protein through gamma-carboxylation. It directs calcium to bones while preventing arterial calcification, supporting both skeletal and cardiovascular health.

Origin & History

Vitamin K2 MK-4, or menaquinone-4, is a form of vitamin K2 found in animal products and certain fermented foods. It is produced synthetically for supplements.

Historical & Cultural Context

Vitamin K2 was discovered in the 1930s, with MK-4 identified as a significant form in animal tissues, historically used in traditional diets.

Health Benefits

- Supports bone health by regulating calcium deposition, which is crucial for preventing osteoporosis. Studies show a 30% improvement in bone density. - Promotes cardiovascular health by reducing arterial stiffness, lowering heart disease risk by 20%. This ensures a healthy circulatory system. - Enhances cognitive function by reducing oxidative stress, potentially lowering Alzheimer's risk. This is vital for maintaining mental clarity. - Boosts immune system by modulating inflammatory pathways, which helps in faster recovery from illnesses. This ensures a robust defense against pathogens. - Improves skin health by promoting collagen production, reducing signs of aging by 15%. This is essential for maintaining youthful skin. - Supports liver health by aiding in detoxification processes, crucial for overall metabolic health. This helps in maintaining a clean internal environment. - Reduces cancer risk by regulating cell growth, which is critical for preventing tumor development.

How It Works

MK-4 serves as a cofactor for gamma-glutamyl carboxylase, which converts glutamic acid residues to gamma-carboxyglutamic acid in vitamin K-dependent proteins. This activates osteocalcin for bone mineralization and matrix Gla protein (MGP) for preventing vascular calcification. MK-4 also modulates gene expression through the steroid and xenobiotic receptor (SXR) pathway.

Scientific Research

Clinical studies and animal research support MK-4's role in bone and cardiovascular health. Preliminary studies suggest benefits for cognitive and reproductive health.

Clinical Summary

Japanese studies with 45mg daily MK-4 showed 30% improvements in bone density and reduced fracture risk in postmenopausal women over 2-3 years. The Rotterdam Study found 32-57mcg daily K2 intake reduced coronary calcification by 52% over 3 years. Most bone health studies used pharmaceutical doses of 45mg, while cardiovascular benefits appeared at much lower dietary intakes of 25-50mcg daily.

Nutritional Profile

- Fat-soluble vitamin. - Short-chain menaquinone form. - Involved in calcium regulation.

Preparation & Dosage

Typical dosage ranges from 1 to 45 mg per day. Consult a healthcare provider before use.

Synergy & Pairings

Vitamin D3, Calcium, Omega-3

Safety & Interactions

MK-4 is generally well-tolerated with no established upper limit, though doses above 45mg may cause mild gastrointestinal upset. It can reduce the effectiveness of warfarin and other vitamin K antagonist anticoagulants by promoting clotting factor synthesis. Patients on blood thinners should consult physicians before supplementation. Safety during pregnancy and lactation is not established at therapeutic doses.