Vitamin D, known primarily for its role in enhancing bone health, also plays a significant part in immune function and inflammation remediation. Vitamin D deficiency is widely associated with seasonal allergies as well as different infectious diseases and their severity. Fermenta, a leading manufacturer of Vitamin D, presents this D-Essence Newsletter to highlight the latest research on Vitamin D and its role in improving immunity to tackle the seasonal affecting diseases. Vitamin D supplementation may lower respiratory tract infections and its signs/symptoms The efficacy of Vitamin D supplementation above the standard dose (400 IU) in preventing infections was analyzed in this meta-analysis of 7 trials which included children <5 years of age. Daily high-dose Vitamin D supplementation reduced the incidence of upper respiratory tract infections by 17% but was not statistically significant, however, the pneumonia incidence was lowered by 73% compared to standard-dose. On secondary outcome analysis, daily supplementation with high-dose Vitamin D was correlated with a 57%, 57%, 56%, 59% and 60% lesser incidence of cold/influenza, otitis media, cough, fever and wheezing, respectively, Vs. standard dose/placebo. Carboo JA et al. Nutr Rev. 2024 Apr 12;82(5):579-599 Low systemic Vitamin D levels potentially increase dengue severity A single-centre cohort study evaluated the association between systemic Vitamin D and the course of dengue disease among 80 adults. Median Vitamin D level was lower in those with dengue haemorrhagic fever (DHF)/dengue shock syndrome (DSS) (based on WHO 1997 criteria) and severe dengue (WHO 2009 criteria) compared to those without. After adjusting for confounding factors, a significantly inverse linear association was observed between Vitamin D and severe dengue (WHO 2009 classification) with higher Vitamin D level demonstrating a 28% and 29% lower risk of severe dengue and severe bleeding, respectively. Sadarangani SP et al. Singapore Med J. 2024 Jun 1;65(6):332-339 Maintaining adequate Vitamin D levels might be a key factor in managing chronic rhinitis The association between Vitamin D deficiency and chronic rhinitis in adults was investigated in this study. Among 12,654 participants, 21.1% had chronic rhinitis and these patients had lower average Vitamin D levels compared to those without chronic rhinitis (17.73 ng/mL Vs. 18.19 ng/mL). There was a 7% higher prevalence and 21% greater odds of Vitamin D deficiency (<20 ng/ml) in patients with chronic rhinitis Vs. those without. Similarly, patients with Vitamin D deficiency had a 18.5% higher prevalence of chronic rhinitis compared to those with sufficiency (≥20 ng/ml). Park SC et al. Nutrients. 2024 Oct 5;16(19):3385 Disclaimer: The contents of this issue of ‘D-essence’ have been developed by FourC Healthvistas Pvt. Ltd. for Fermenta Biotech Ltd. (and its group companies) from information published in literature or sources as cited. The information presented in this publication is for general information and educational purpose only, and it shall neither be considered as any claim, nor as a substitute for professional medical advice, nor is intended to diagnose, treat, cure or prevent any disease. Although a great care has been taken in compiling and checking the information, it has not been evaluated by United States Food and Drug Administration or any authority. The authors, FourC Healthvistas Pvt. Ltd., Fermenta Biotech Ltd., and their respective employees, directors, managers, agents & sponsors shall not be responsible and in any way liable for any errors, omissions or inaccuracies in this publication, whether arising out of negligence, mistake or otherwise, and for any consequences arising therefrom. For more information, please visit our public awareness initiative All Rights Reserved Fermenta Biotech Ltd.