Changes in Vitamin D Status in Overweight Middle-Aged Adults with or without Impaired Glucose Metabolism in Two Consecutive Nordic Summers

<div>The distribution of the study participants according to their 25[OH]D concentrations before and after summer, grouped into four categories: deficient, insufficient, low, and adequate.</div>

Journal of Nutrition and Metabolism

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Figure 2

Figure 2: Changes in Vitamin D Status in Overweight Middle-Aged Adults with or without Impaired Glucose Metabolism in Two Consecutive Nordic Summers 