A new indication of vitamin K is disclosed which results in the provision of methods of treatment, both therapeutic and non-therapeutic, as well as functional foods and pharmaceutical and nutraceutical products comprising vitamin K for improving microvascular integrity and capillary structure and function, thus preventing, mitigating, counteracting or curing diseases associated with impaired capillary morphology including the glycocalyx or capillary dysfunction. Preferably, vitamin K is a menaquinone, most preferably selected from the long-chain menaquinones MK-7 through MK-10.
