25-Hydroxyvitamin D deficiency among anaesthesiologists and anaesthesiology residents in Chile

Editor—Approximately one billion people worldwide have 25-hydroxyvitamin D (25OHD) deficiency.^1–3 The Endocrine Society considers plasma levels equal or lower than 20 ng mL⁻¹ as a deficiency and levels higher than 30 ng mL⁻¹ as optimal levels.⁴ Low sunlight exposure is the determining factor for 25OHD deficiency. Such factor relies on the season and the latitude of residence, among others.⁵⁶ Indoor work is associated with a low sunlight exposure. Therefore, anaesthesiologists may be at risk of developing deficient levels of 25OHD. The prevalence of 25OHD deficiency in this population remains unknown.

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