In a recent study published in Nutrients, a research group led by Prof. Zheng Zhiming from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences (CAS) has found a novel function of vitamin K2: regulating mitochondrial membrane potential and alleviating oxidative stress, thus repairing mitochondrial dysfunction and inhibiting nerve cell damage caused by 6-hydroxydopamine (6-OHDA).