Vitamin K (VK) exists in nature in the form of VK1 and VK2. Initially its importance was its ability to promote blood coagulation and was known as the "coagulation vitamin". Now the latest research has shown its potential for the prevention and treatment of various diseases. Many recent studies have shown the beneficial effects of VK on immunity, antioxidant capacity, intestinal microbiota regulation, skin development, bone protection and its potential preventive and therapeutic effects on infections, inflammation as well as in type 2 diabetes mellitus, Alzheimer's disease, Parkinson's disease, cancer, aging, atherosclerosis, autoimmune disorders, inflammatory bowel disease, type 1 diabetes mellitus, multiple sclerosis, and rheumatoid arthritis. This show will discuss all of this and more.