FOCUS ON VITAMIN DThe Association Between Vitamin D Status and Pulmonary Function in Pediatric Patients With Cystic Fibrosis A Review of the EvidenceGomes, Allison MS, RD, CNSC, CDN; Parker, Anna DCN, MS, RD, CDE, CCRC; Zelig, Rena DCN, RDN, CDE, CSGAuthor Information Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers University, Newark, New Jersey. Correspondence: Allison Gomes, MS, RD, CNSC, CDN, Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers University, 65 Bergen St, Ste 157, Newark, NJ 07107 (firstname.lastname@example.org). The views expressed and submitted in this review are that of the authors and not reflective of Rutgers University. The authors have disclosed no significant relationships with, or financial interest in, any commercial companies pertaining to this article. Topics in Clinical Nutrition: July/September 2020 - Volume 35 - Issue 3 - p 210-221 doi: 10.1097/TIN.0000000000000192 Buy Metrics Abstract Sufficient vitamin D levels play an essential role in bone health and, more recently, in pulmonary function. Achieving sufficient vitamin D levels is challenging, especially among individuals with malabsorptive diseases, such as cystic fibrosis (CF). Cystic fibrosis is characterized by a progressive loss of pulmonary function and fat malabsorption, increasing the risk for vitamin D deficiency. After reviewing the literature for pediatric patients with CF, the association between vitamin D status and pulmonary function remains unclear. More studies are needed to evaluate whether adequate vitamin D status can assist in maintaining pulmonary function and slowing disease progression. © 2019 Wolters Kluwer Health, Inc. All rights reserved.