Emerging evidence suggests that Vitamin D might play a vital role in respiratory health and disease outcomes. Vitamin D exerts direct effects on the lung tissue, regulates immune responses, modulates inflammation and enhances antimicrobial defenses, which may help reduce the risk of respiratory infections, disease progression and subsequent mortality. Fermenta, one of the largest manufacturers of Vitamin D, brings to you this Newsletter on the latest research of Vitamin D in Respiratory Diseases. Vitamin D supplementation might reduce in-hospital mortality in COPD ICU patients A retrospective study explored the association between Vitamin D and the prognoses of COPD patients in the intensive care unit (ICU). Around 587 patients received Vitamin D supplementation and 2,616 were in the no-Vitamin D group (n=3,203). After adjusting for confounding variables, the no-Vitamin D group was associated with a 70% and 80% increased risk of in-hospital and ICU mortality compared to the Vitamin D group. The survival probability increased significantly in the group using Vitamin D for >7 days compared to ≤ 7 days. A potential survival benefit was observed especially in female patients. He Q et al. Front Med (Lausanne). 2024 Mar 22;11:1334524 Low Vitamin D levels may be prevalent in cystic fibrosis patients The importance of Vitamin D levels in cystic fibrosis (CF) was evaluated in a systematic review and meta-analysis of 20 studies. Pooled analysis of 8 case-control studies revealed that serum Vitamin D levels were 3.41 ng/ml and 2.6 ng/ml significantly lower in the pediatric/adolescent and adult CF patients, respectively, compared to controls. In 12 cross-sectional studies involving 1,622 participants, 36% pediatric/adolescent and 63% adult CF patients had insufficient Vitamin D levels (20-30 ng/ml). It is important to follow the existing guidelines regarding maintenance of Vitamin D levels in CF patients. Farahbakhsh N et al. J Health Popul Nutr. 2024 Jan 17;43(1):11 Vitamin D deficiency might be a risk factor for incident active TB A prospective, case-control study revisited the association between Vitamin D deficiency (< 20 ng/ml) and incident active tuberculosis (TB) among 62 people with incident active TB and 248 control individuals. Around 1.7-fold significantly greater proportion of TB patients had Vitamin D deficiency compared to the control group (51.6% vs. 29.8%). TB patients had significantly lower levels of Vitamin D compared to control group (21.25 ng/ml Vs. 24.45 ng/ml). In multivariable analysis, Vitamin D deficiency was found to be an independent risk factor for incident active TB with 3-fold higher odds. Hsu MS et al. J Microbiol Immunol Infect. 2024 Mar 28:S1684-1182(24)00068-9 Disclaimer: The contents of this scientific issue have been developed by FourC Healthvistas Pvt. Ltd. for Fermenta Biotech Ltd., from reasonable and reliable information published in literature as cited. This is for information purpose only and not a substitute to medical advice. Although great care has been taken in compiling and checking the information, the authors, FourC Healthvistas Pvt. Ltd., Fermenta Biotech Ltd., its employees and/or its agents & sponsors shall not be responsible, or in anyway liable for any errors, omissions or inaccuracies in this publication, whether arising from negligence or otherwise, or for any consequences arising therefrom. For more information, please visit our public awareness initiative All Rights Reserved Fermenta Biotech Ltd.