Seoul National University and University of California San Diego School of Medicine researchers have suggested in their epidemiological study that there could be a larger risk of developing diabetes if a person has vitamin D deficiency. Reported in PLOS One’s online issue in April, the findings of the study and previous research give the impression of a strong association between the prevention of the transition to diabetes from pre-diabetes and type 2 diabetes and high 25-hydroxyvitamin D levels, said co-author Cedric F. Garland, DrPH. Less with the addition of reasonable exposure to sunlight with minimal clothing on a daily basis, Garland thinks 3,000 to 5,000 IUs of dietary supplements per day would be required to reach the levels of 30 ng/ml of 25-hydroxyvitamin D.
Garland Previously Investigated Connections between Vitamin D Levels and Cancer
A batch of 903 healthy adults with 74 years as the mean age having no indications of diabetes or pre-diabetes were studied by the researchers at the time of their clinic visits between 1997 and 1999. They participants were then followed through 2009. Researchers used their visits to measure oral glucose tolerance and fasting plasma glucose while evaluating their vitamin D levels in blood. Over the years, 337 new pre-diabetes and 47 new diabetes cases were found. Blood sugar levels were found to fall short of categorizing them as an indication of type 2 diabetes, although they shot higher than normal.
First author Sue K. Park, MD said that 25-hydroxyvitamin D blood levels more than 50 ng/ml developed 1/5th of the risk of causing diabetes, whereas over 30 ng/ml levels developed 1/3rd of the risk. On the other hand, levels below 30 ng/ml were considered to be associated with vitamin D deficiency. Compared to those with above 50 ng/ml levels, participants with below 30 ng/ml levels were evaluated to be exposed to five times greater risk of developing diabetes.