29 May 2020 --- Vitamin K2 has shown potential for lowering coronary heart disease (CHD) risk, while there is no association between intake of vitamin K1 and CHD. That is according to a recent observational cohort study published in the British Medical Journal, which examined the association between intakes of vitamins K1 and K2 and incidence of CHD. NattoPharma highlights this research’s importance in distinguishing between various forms of the vitamin.