Previous studies have shown a link between vitamin D deficiency and glucose metabolism disorders. This Iranian study aimed to evaluate whether vitamin D administration can manage diabetes mellitus type 1. During the study, the researchers examined the effect of vitamin D on long-term glucose (HbA1c) levels of children and adolescents with type 1 diabetes. 70 subjects with type 1 diabetes took part in the study. Among others, vitamin D, glucose, and HbA1c levels were measured at the start of the study and after administration of 50,000 IU (1250 µg) of vitamin D3 biweekly for 3 months. 66.1% of the subjects had a vitamin D deficiency. Vitamin D administration led to a significant decrease in fasting blood sugar and HbA1c levels in the treated group. In conclusion, this study showed that long-term glucose levels (HbA1c) may be reduced by administering vitamin D to type 1 diabetes patients. More details can be found in the study.
Ordooei et al.