Respiratory infections in children 6 X more likely if low Vitamin D (avg of 2 studies) - Aug 2023

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The Effects of Vitamin D Supplementation on Respiratory Infections in Children under 6 Years Old: A Systematic Review

Diseases. 2023 Aug 8;11(3):104. doi: 10.3390/diseases11030104.
Larisa Mihaela Marusca 1 2, Gowry Reddy 3, Mihaela Blaj 4, Reshmanth Prathipati 5, Ovidiu Rosca 6, Felix Bratosin 2 6, Iulia Bogdan 2 6, Razvan Mihai Horhat 7, Gabriela-Florentina Tapos 8, Daniela-Teodora Marti 9, Monica Susan 10, Raja Akshay Pingilati 11, Florin George Horhat 12, Mavrea Adelina 13

Childhood respiratory tract infections (RTIs) pose a significant health burden, especially in children under six years old. The main objective of this systematic review was to assess the effectiveness of vitamin D supplementation in the prevention of RTI in this population while also exploring potential effect modifiers such as age, baseline vitamin D status, and type of respiratory infection. A systematic review of the literature published up to February 2023 was conducted according to PRISMA guidelines, searching PubMed, Web of Science, Cochrane, and Scopus databases. Eight studies met the inclusion criteria, which investigated the association between vitamin D supplementation and respiratory infections in children between zero and five years old. The included studies were conducted between 2012 and 2021, encompassing a total of 2189 children from five randomized trials, two case-control studies, and one prospective cohort study. The relationship between vitamin D supplementation and the prevention of childhood RTI was not consistently observed across all included studies. Pooled results demonstrated varied effects of vitamin D supplementation on respiratory infection incidence, severity, and symptoms.
Three studies reported statistically significant associations between low vitamin D levels and respiratory infections (OR = 4.90, OR = 6.97), while one study found that children who received vitamin D supplementation of 800 UI/day for 3 months during the cold season had fewer episodes of respiratory symptoms (RR = 0.55) and recovered more quickly from acute RTI.
Lastly, according to one study, vitamin D intake < 80 IU/kg/day was significantly associated with the risk of acquiring pneumonia (OR 7.9) but not bronchiolitis. The remaining five studies found no statistically significant differences in infection rates or severity (p-value > 0.050). The available evidence on the effectiveness of vitamin D supplementation for preventing and treating respiratory infections in children under six years old is limited, with only a few favorable effects being reported. In some cases, a dose of 80 UI/kg/day was found to provide significant protection for acute respiratory infections, although in the major trials the only benefit was a quicker recovery and fewer respiratory symptoms, with no impact on incidence and severity of respiratory infections. Nevertheless, the study protocol, the supplementation dose, and duration of supplementation had significant variations between studies, leading to inconclusive findings.
 Download the PDF from VitaminDWiki

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VitaminDWiki - Respiratory, children and Vitamin D - 23+ studies

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VitaminDWiki – Infant-Child category has 854 items and contains

• No consensus on MINIMUM International Units (IU) for healthy infant of normal weight
• 400 IU Vitamin D is no longer enough
  Was OK in the past century, but D levels have been dropping for a great many reasons.
  FDA doubles the amount of vitamin D permitted in milk – July 2016
• No consensus: range is 600 to 1600 IU – based on many randomized controlled trials
• Review of 400 IU to 2000 IU daily and higher if non-daily
• Fewer pre-infants were vitamin D deficient when they got 800 IU – RCT Feb 2014
• 1600 IU was the conclusion of three JAMA studies
     1000 IU recommended in France and Finland – 2013 - appears to be a good level
• 5X less mite allergy after add vitamin D
• Child bone fractures with low vitamin D were 55X more likely to need surgery
• 75 % of SIDS had low vitamin D
• Children stayed in ICU 3.5 days longer if low vitamin D – Dec 2015
• 5 out of 6 children who died in pediatric critical care unit had low vitamin D – May 2014
• Infants have gotten free 400 IU of vitamin D in Turkey since 2005, More for longer would be even better – Feb 2022
• Preemies should have vitamin D supplements – reaching an agreement – April 2021
• Vitamin D loading dose was as effective as daily dosing (rickets in this case) – RCT July 2021

Having a good level of vitamin D cuts in half the amount of:

• Asthma, Chronic illness, Doctor visits, Allergies, infection
  Respiratory Tract Infection, Growing pains, Bed wetting

Need even more IUs of vitamin D to get a good level if;

• Have little vitamin D: premie, twin, mother did not get much sun access
• Get little vitamin D: dark skin, little access to sun
• Vitamin D is consumed faster than normal due to sickness
• Older (need at least 100 IU/kilogram, far more if obese)
• Not get any vitamin D from formula (breast fed) or (fortified) milk
  Note – formula does not even provide 400 IU of vitamin D daily

Infants-Children need Vitamin D

• Sun is great – well known for 1,000’s of years.
  US govt (1934) even said infants should be out in the sun
• One country recommended 2,000 IU daily for decades – with no known problems
• As with adults, infants and children can have loading doses and rarely need tests
• Daily dose appears to be best, but monthly seems OK
• Vitamin D is typically given to infants in the form of drops
     big difference in taste between brands
     can also use water-soluable form of vitamin D in milk, food, juice,
• Infants have evolved to get a big boost of vitamin D immediately after birth
  Colostrum has 3X more vitamin D than breast milk - provided the mother has any vitamin D to spare
• 100 IU per kg of infant July 2011, Poland etc.
  
  More than 100 IU/kg is probably better
• 854 items in the category Infant/Child See also
• 34 pages in VitaminDWiki had BREASTFE*in title as of Jan 2022
• "BIRTH DEFECTS" 172 items as of July 2016
• Stunting OR “low birth weight” OR LBW OR preemie OR preemies OR preterm 1940 items as of Oct 2018
• 153 VitaminDWiki pages contained PRETERM or PREEMIE in title as of Nov 2024
• "SUDDEN INFANT DEATH" OR SIDS 214 items as of Dec 2020
• Overview of Rickets and Vitamin D
• Youth category listing has 175 items along with related searches
• Down's syndrome and low vitamin D - several studies
• Rett syndrome associated with low vitamin D, treated by Omega-3