If you’re talking vitamin D and expecting it to lower your risk of getting type 2 diabetes when you get older, it’s time to lower your expectations.
A new study, the largest of its kind, has found that taking 4,000 international units (IU) per day, which is on the upper limit of the recommended intake, may double the amount of vitamin D in the blood but it gives most people roughly the same chance of developing blood sugar problems as people who don’t take the vitamin.
After about 2.5 years, diabetes appeared at a rate of 9.4 per cent per year with

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