To test the benefits of vitamin D, patients given a regular yogurt twice a day for 12 weeks were compared with those who had eaten yogurts fortified with the vitamin.
The results showed that those patients who had been eating the vitamin D-enriched yogurts improved their cholesterol levels. According to Dr Neyestani who worked on the trial, "all the improvements in cholesterol seemed to be due to the reduction in insulin resistance".
His colleague Professor Djazayery added that despite discovering some patients had not been able to raise their vitamin D levels, "for most diabetics with vitamin D deficiency this is an easy way to improve their outcome".
Vitamin D is also known to help keep bones and teeth healthy and our main source of it is sunlight.