Asthma occurrence rate reduced 3X by Vitamin D – 8 study meta-analysis - Aug 2021

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Asthma exacerbations in children reduced 2.4X (59%) by 1600 IU of vitamin D daily – 10 study meta-analysis Dec 2024

Vitamin D supplementation decrease asthma exacerbations in children: a systematic review and meta-analysis of randomized controlled trials
Ann Med. 2024 Dec;56(1):2400313. doi: 10.1080/07853890.2024.2400313
Katherine Fedora 1 2, Retno Asih Setyoningrum 1 2, Qorri' Aina 1, Laili Nur Rosyidah 1, Nur Lailatun Ni'mah 3, Feelin Fatwa Titiharja 4

Background: Observational studies have linked low vitamin D (VD) levels to increased asthma attacks in children. Subsequent meta-analyses of adults and children revealed that VD treatment might benefit asthmatic patients by reducing the incidence of exacerbations. Therefore, this review aims to analyze the effects of VD supplementation in reducing asthma exacerbations in children.

Methods: Published reports from PubMed, Cochrane, and Google Scholar were systematically searched until April 2023. The study protocol was registered in the PROSPERO database CRD42023411796. Randomized controlled trial studies were included in this review. Meta-analysis was performed using Cochrane RevMan 5.1 and presented with 95% confidence intervals (CIs).

Results: Ten relevant studies enrolled 1243 asthmatic children (631 children receiving vitamin D3 supplementation, 612 children receiving placebo) were included in this review. Our pooled analysis found that VD supplementation had a significant effect on lowering the total number of asthma exacerbations (RR 0.62; 95% CI: 0.44, 0.87; p = 0.01).
Subgroup analysis revealed that a daily dose of VD given based on standard daily dose recommendation had a significant improvement on asthma exacerbations [(RR 0.41; 95% CI: 0,18, 0,92; p = 0.03).

Conclusions: Vitamin D supplementation can lower the occurrence of exacerbations in children with asthma, along with the improvement of FEV1.
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Vitamin D and asthma occurrence in children: A systematic review and meta-analysis - Aug 2021

Journal of Pediatric Nursing, https://doi.org/10.1016/j.pedn.2021.07.005 PDF costs $14.

Problem
The association between serum 25-Hydroxyvitamin D (25-OHD) level and asthma occurrence in children was controversial.

Eligibility criteria
The Pubmed, Ovid Medline, Embase, Cochrane Library were systematically searched up to April 13th 2020. All the study measured the serum 25-OHD level in children, or classified the children based on the 25-OHD level into severe vitamin D deficiency, insufficient deficiency and comparing the prevalence of asthma in childhood were included in our study.

Sample
A total of 35 studies were included in our meta-analysis. Among them, 24 studies were included for analyzing the association between 25-OHD level and asthma, and 12 studies evaluated the treatment effect of vitamin D.

Results
The children with asthma (5711 participants) had significant lower 25-OHD level than children without asthma (21,561 participants) (21.7 ng/ml versus 26.5 ng/ml, SMD = −1.36, 95% = −2.40 - - 0.32, P = 0.010).
Besides, the children with asthma treated with vitamin D supplement had a significantly lower recurrence rate than the placebo group (18.4% versus 35.9%, RR = 0.35, 95%CI = 0.35–0.79, P = 0.002).

Conclusions
Children with asthma had a lower 25-OHD level than healthy children.
Vitamin D supplement could decrease the asthma recurrence rate in the follow-up years.

Implications
This study implies that lower 25-OHD may cause asthma in childhood.

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Overview Asthma and Vitamin D contains

• VitaminDWiki pages containing ASTHMA in title (164 as of Nov 2024)
• Asthma attacks reduced in half if Vitamin D level higher than 42 nanograms – RCT May 2014
  • Started with 100,000 IU loading dose and has standard-of-care Asthma drug
• Asthma may be treated by Vitamin D if more than 40 ng for 12 months – Sept 2018
• Those with Asthma or COPD had half the response to Vitamin D – March 2020
  • Those with Asthma need larger doses to get the same response.
  • Probably need gut-friendly Vitamin D
• CDC funded study: 1.3 X Asthma risk if vaccination contained aluminum – Sept 2022
• Asthma occurrence rate reduced 3X by Vitamin D – 8 study meta-analysis - Aug 2021
• Asthma in child 2.3 X more likely if both parents asthmatic (unless add Vitamin D) – VDAART Nov 2018
• Adult-onset asthma 2X more likely if low vitamin D and not hyperallergenic – May 2018
• Children had poor lung function if mothers had low vitamin D while pregnant – Nov 2022
• 26 health factors increase the risk of COVID-19 – all are proxies for low vitamin D
  • CDC list of high-risk for COVID-19 includes Asthma
• Child Asthma increased 2.1 X by antibiotics, Child milk allergy increased 4.4 X by PPI – April 2018
• Asthmatic children taking Corticosteroids had 2X more vitamin D intake, but lower levels – July 2017
• Traffic pollution increases asthma unless supplement with Vitamin D (mice) June 2018
• Childhood asthma problems eliminated for months by 600,000 IU of Vitamin D injection – June 2017
• Proof that Vitamin D Works 99 health problems prevented/treated as of Feb 2025
  • Asthma has been proven to be treated by Vitamin D in at least 4 random controlled trials
• Childhood asthma still reduced 4 months after 800 IU of Vitamin D daily - RCT Feb 2016
• Respiratory Disease exacerbations (Asthma, CF, COPD) may be treated by Vitamin D – July 2019
• Women with asthma 35X more likely to be vitamin D deficient – Oct 2013
• If high vitamin D during pregnancy the child is 5X less likely to get asthma
• Asthma is treated by Vitamin D – now they are trying to understand why – Feb 2015
• Increase in vitamin D deficiency may partially explain increases in asthma and allergies – Jan 2015
• Why deficiencies in vitamin D and magnesium are linked to asthma Magnesium allows muscles to relax
• Babies 3.6X more likely to go to hospital for asthma if asthmatic mother had low vitamin D while pregnant – June 2019
• The worse the bronchial asthma, the lower the vitamin D – Jan 2017 has the following chart

click on the chart to see the study

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168 VitaminDWiki pages contain ASTHMA... in the title