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Vitamin D2 & D3: Did 2017 meta-analysis show persons taking 800 IUs of vitamin D or more had a lower risk of influenza and other respiratory viruses than those who did not? Yes, it did!
Vitamin D protected against acute respiratory tract infection; independent associations between low serum concentrations of 25-hydroxyvitamin D susceptibility to acute respiratory tract infections
SOURCE:
https://www.bmj.com/content/356/bmj.i6583
A Systematic review and meta-analysis of individual participant data (IPD) from randomised controlled trials.
‘25 eligible randomised controlled trials (total 11 321 participants, aged 0 to 95 years) were identified. IPD were obtained for 10 933 (96.6%) participants…
Vitamin D supplementation reduced the risk of acute respiratory tract infection among all participants (adjusted odds ratio 0.88, 95% confidence interval 0.81 to 0.96; P for heterogeneity <0.001)…
In subgroup analysis, protective effects were seen in those receiving daily or weekly vitamin D without additional bolus doses (adjusted odds ratio 0.81, 0.72 to 0.91) but not in those receiving one or more bolus doses (adjusted odds ratio 0.97, 0.86 to 1.10; P for interaction=0.05)…
Among those receiving daily or weekly vitamin D, protective effects were stronger in those with baseline 25-hydroxyvitamin D levels <25 nmol/L (adjusted odds ratio 0.30, 0.17 to 0.53) than in those with baseline 25-hydroxyvitamin D levels ≥25 nmol/L (adjusted odds ratio 0.75, 0.60 to 0.95; P for interaction=0.006). Vitamin D did not influence the proportion of participants experiencing at least one serious adverse event (adjusted odds ratio 0.98, 0.80 to 1.20, P=0.83). The body of evidence contributing to these analyses was assessed as being of high quality.’
Relevant associated research:
Cannell JJ, Vieth R, Umhau JC, et al. Epidemic influenza and vitamin D. Epidemiol Infect2006;356:1129-40. doi:10.1017/S0950268806007175 pmid:16959053.
Jolliffe DA, Griffiths CJ, Martineau AR. Vitamin D in the prevention of acute respiratory infection: systematic review of clinical studies. J Steroid Biochem Mol Biol2013;356:321-9. doi:10.1016/j.jsbmb.2012.11.017 pmid:23220552.
Bergman P, Lindh AU, Björkhem-Bergman L, Lindh JD. Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. PLoS One2013;356:e65835. doi:10.1371/journal.pone.0065835 pmid:23840373.
Charan J, Goyal JP, Saxena D, Yadav P. Vitamin D for prevention of respiratory tract infections: A systematic review and meta-analysis. J Pharmacol Pharmacother2012;356:300-3. doi:10.4103/0976-500X.103685 pmid:23326099.
Vitamin D2 & D3: Did 2017 meta-analysis show persons taking 800 IUs of vitamin D or more had a lower risk of influenza and other respiratory viruses than those who did not? Yes, it did!
Amazing how covid was not about natural immunity through adequate restful sleep, exercise, healthy foods and vitamins and supplements. It was about fear, lockdowns, masking, a seditary lifestyle and less healthy eating. Let us not forget these crazy jabs. The whole thing continues to be mind boggling. I am tired of the propaganda and profiteering that continues to this day.
I was in Laboratory Medicine until retirement in 2016. Even then it was known Vit D was beneficial in fighting any viral infection. The mainstream medical did not want people to know this. The studies under dosed the D so designed to fail in many cases.
Vitamin D is helpful in a myriad of ways. Take it, and take 5000 to 10000 IU daily! Also cod liver oil capsules have D and other beneficial components, so add that in with your daily supplement schedule. As Dr Cole says, “you are your own best Doctor”