It will appear that all of my news posts are related to vitamin D, but the news lately just don’t stop mentioning it in various contexts. Why is there such a surge of new results with vitamin D, it’s difficult to say. Harvard Health Letter has reported a recent study published in PLOS One, where it was shown that higher levels of vitamin D were correlated with a lower diabetes risk. Among 900 older adults, people with vitamin D levels of 30 ng/ml or more had one-third the risk for developing diabetes, while people whose D levels were 50 ng/ml or more had one-fifth the risk. The study does not show a causal relationship, just a correlation, so this is still not a proof that taking vitamin D supplements would reduce risk of diabetes, but there is a possibility.