Finally we looked at the effect of vitamin D deficiency, and as was expected diabetes risk was increased among children who were suspected of having had rickets during the first year of life.

However, due to the small numbers of exposed subjects, confidence intervals for all the effect estimates were wide. Roughly, our results support anything from a 30% reduction up to 95% reduction in the diabetes risk for receiving at least some vitamin D supplementation.

On the basis of these findings and previous studies would you trust that there is an association between vitamin D and type 1 diabetes?

What would you like to know more?

What kind of studies do you think are needed?