Does Vitamin D Improve Glycemic Control in Type II DM?

Does Vitamin D Improve Glycemic Control in Type II DM? A Double Blind Randomized Controlled Trial

Vitamin D status has been negatively associated with the presence of type II DM and glycemic control. However, a cause-effect relationship between vitamin D deficiency and glycemic control has not been established. The investigators plan to conduct a double blind, randomized, placebo controlled trial on the effect of vitamin D supplementation on glycemic control in Type II DM.

Inclusion Criteria:

• Type II diabetics living in Riyadh area who consume no more than one serving of milk/day
• Do not take vitamin supplement
• Habitually have less than 10 hour of sun exposure per week
• Don't suffer from granulomatous conditions, liver disease, or kidney disease
• Don't take anticonvulsants, barbiturates, or steroids.
• Stable glycemic control (not more than 0.5% difference between current HA1c and a HA1c obtained 2-4 months earlier)
• Current HA1c between 6.5 and 8%, and current total 25 OH vitamin D level between 10-30 nmol/L.