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      Drugs & Diseases > Medscape > Fast Five Quizzes

      Fast Five Quiz: Vitamin D Deficiency

      Richard H. Sinert, DO

      Disclosures

      April 04, 2025

      Vitamin D deficiency is a highly prevalent condition, with > 15% of all individuals worldwide having serum 25-hydroxyvitamin D levels in the deficient range. The condition is even more prevalent among those living at high latitudes and during winter-spring compared with summer-autumn.

      Vitamin D plays several physiologic roles and has been studied for its potential in preventing obesity and averting the adverse effects of cancer therapy, among other preventive interventions.

      How much do you know about vitamin D deficiency and supplementation? Check your knowledge with this quick quiz.

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