Vitamin K supplementation improved glycemic control in women with prediabetes, in a study from Ahvaz Jundishapur University of Medical Sciences in Iran. During the four week study, 82 prediabetic women between the ages of 22- and 45-years-old were given daily either 1,000 micrograms of vitamin K or placebos. Blood samples were collected at baseline and at the end of the study. Results showed that those women taking vitamin K showed improved glycemic status compared to the women on placebos.
Rasekhi H, Karandish M, Jalall M, et al: Phylloquinone supplementation improves glycemic status independent of the effects of adiponectin levels in premenopausal women with prediabetes. Journal of Diabetes & Metabolic Disorders 2015;14:1.