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Respiratory Tract Infections during cold weather – similar rates for low and very low vitamin D – Sept 2021

Vitamin D and upper respiratory tract infections in young active males exposed to cold environments

Ann Agric Environ Med 2021 Sep 16;28(3):446-451. doi: 10.26444/aaem/12753
Joanna Orysiak 1, John S Fitzgerald 2, Jadwiga Malczewska-Lenczowska 3, Konrad Witek 3, Jan Gajewski 4, Agnieszka Zembron-Lacny 5, Barbara Morawin 5, Dariusz Sitkowski 3

VitaminDWiki

VitaminDWiki pages containing RESPIRATORY TRACT INFECTION or RTI in title

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Items found: 28
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Acute viral respiratory infections (RTI) reduced by Vitamin D - 20 reviews - Aug 2020 24 Sep, 2021
Respiratory Tract Infections during cold weather – similar rates for low and very low vitamin D – Sept 2021 24 Sep, 2021
Vitamin D may reduce Respiratory Tract Infections and the use of antibiotics – March 2021 24 Jun, 2021
Vitamin D reduces Respiratory Tract Infections and reduces use of antibiotics – March 2021 15 Apr, 2021
Recurrent RTI treatment success: Conventional 71 pcnt, Vitamin D 96 pcnt – March 2021 12 Apr, 2021
Respiratory Tract Infection risk reduced 2X by Vitamin D loading doses – meta-analysis Jan 2021 22 Jan, 2021
Acute respiratory tract infections not reduced by Vitamin D if already have a good level – Jan 2020 15 Jan, 2021
400 IU Vitamin D for UK adults with COVID is based on a RTI study biased by infants - Jan 2021 29 Dec, 2020
Upper Respiratory Tract Infections in adults reduced by just 400 IU of vitamin D – RCT Dec 2020 12 Dec, 2020
Zinc, respiratory tract infections and COVID-19 – July 2020 07 Jun, 2020
Lower Respiratory Tract Infection in Infants reduced 5.9 X by daily 600 IU of vitamin D (China) - March 2020 07 Mar, 2020
Respiratory Tract Infections in children 7.4 X more likely if poor Vitamin D Receptor – 2008 11 Feb, 2018
Influenza risk reduced 2X by 2,000 IU of Vitamin D (vs 400), RTI reduced 3X by 400 or more IU – July 2017 23 Jan, 2018
Review of meta-analyses of non-skeletal benefits of vitamin D (Mortality, RTI, etc) – July 2017 28 Nov, 2017
Acute respiratory tract infections prevented by vitamin D (even when ignoring the dose size – Meta-analysis Feb 2017 09 Aug, 2017
RTI – Feel much better if increase vitamin D level above 40 ng (4000 IU) – RCT Sept 2015 18 Jul, 2017
Respiratory tract infection eliminated in 36 percent of people by 4000 IU of Vitamin D – RCT Sept 2015 13 Jan, 2017
Lower respiratory tract infections in children associated with Low Vitamin D – meta-analysis May 2016 15 May, 2016
Respiratory tract infections in childhood – vitamin D is needed, no consensus of how much – Oct 2015 15 May, 2016
Respiratory infections (RTI) cut in half by 20,000 IU weekly vitamin D if initially deficient – RCT March 2015 18 Apr, 2015
Vitamin D and Respiratory Tract Infections – meta-analysis with charts June 2013 24 Mar, 2015
Newborn acute lower respiratory tract infection associated with low maternal vitamin D – March 2015 20 Mar, 2015
Vitamin D and infectious diseases like RTI, TB and Sepsis – Nov 2014 24 Nov, 2014
Reduced viral respiratory tract infections by half by having more than 38 ng of vitamin D – June 2010 29 Oct, 2014
Far fewer lower respiratory tract infections at 36 months if good vitamin D during pregnancy – Nov 2013 18 Jul, 2014
Upper respiratory tract infection 2X more likely if vitamin D less than 30 ng – Aug 2013 12 Feb, 2014
Vitamin D reduces respiratory tract infections by 40 percent– meta-analysis Dec 2012 28 Oct, 2013
Vitamin D and respiratory tract infections - Wikipedia June 2013 29 Jun, 2013


Introduction and objective: Performing indoor and outdoor work in cold environments may result in various adverse effects on human health and may lead to increased risk of respiratory infection. The aim of this study was to determine the relation of vitamin D status to secretory immunoglobulin A concentration, leucocyte counts, cytokine concentrations and incidence of upper respiratory tract infection (URTI) episodes in young active men during an autumn-winter period.

Material and methods: The effect of work in a cold microclimate was studied among 23 young active male ice hockey players during a 19-week study period. Blood and saliva samples were collected 7 times during the study period. Incidence of URTI was evaluated using WURSS 21. White blood cell, neutrophil, lymphocyte, monocyte, eosinophil and basophil counts, concentrations of 25(OH)D, C-reactive protein, cortisol, IL-1ra, IL-10, IL-1β and immunoglobulins A, M and G, were determined in the blood. Secretory immunoglobulin A, A1 and A2 and cortisol were analysed in saliva. Spearman's correlations were used to evaluate relationships between initial or final 25(OH)D concentration and URTI incidence, as well as the immune and endocrine markers. Differences in URTI episodes, immune and endocrine parameters between sufficient ( ≥20 ng·ml -1) and deficient (<20 ng ·ml -1) vitamin D status groups were compared with the Mann-Whitney test.

Results: There were no statistically significant correlations between mucosal and blood markers or URTI incidence and initial and final 25(OH)D concentrations. Immune, endocrine and URTI variables did not differ between deficient and sufficient vitamin D status groups.

Conclusions: 25(OH)D concentration has no impact on mucosal and systemic immunity, nor on URTI episodes.


Created by admin. Last Modification: Friday September 24, 2021 19:48:33 GMT-0000 by admin. (Version 3)
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