30 Jul 2019 --- Vitamin D supplementation may slow the progression of Type 2 diabetes in newly diagnosed patients and those with prediabetes, according to a study published in the European Journal of Endocrinology. The study findings suggest that high-dose supplementation of vitamin D can improve glucose metabolism to help prevent the development and progression of diabetes. Although the results are promising, the researchers note that further studies are required to confirm the findings – in particular, to identify whether some people may benefit more from the intervention, and to evaluate the safety of high-dose vitamin D supplementation in the long term.