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  • Vitamin D...

Vitamin D supplementation in infants alters gut microbiome composition: Study

Dr. Kamal Kant KohliBy Dr. Kamal Kant KohliPublished On 2020-08-19T05:08:25+05:30  |  Updated On 18 Aug 2020 11:38 PM GMT
Vitamin D supplementation in infants alters gut microbiome composition: Study

Researchers at the University of Alberta have found in a new study that vitamin D supplementation is associated with compositional changes in a baby's microbiome--notably a lower abundance of the bacteria Megamonas--at three months of age.New research from the CHILD Cohort Study has shed light on the influence of vitamin D supplementation on a baby's developing gut microbiome.The study has...

Researchers at the University of Alberta have found in a new study that vitamin D supplementation is associated with compositional changes in a baby's microbiome--notably a lower abundance of the bacteria Megamonas--at three months of age.

New research from the CHILD Cohort Study has shed light on the influence of vitamin D supplementation on a baby's developing gut microbiome.

The study has been published in the journal Gut Microbes.

Most infants in North America are supplemented with vitamin D subsequent to recommendations that all breastfed infants receive 400 IU/day, an amount that is also present in commercial infant formulas. Since little is known about the impact of this supplementation on infant gut microbiota, researchers undertook a study to determine the association between maternal and infant vitamin D supplementation, infant gut microbiota composition and Clostridioides difficile colonization.

"Vitamin D plays an important role in early life, supporting bone metabolism and the healthy development of a baby's immune system," said senior author Anita Kozyrskyj, a professor in the Department of Pediatrics at the University of Alberta and a CHILD Cohort Study investigator. "Most infants in North America receive vitamin D, either as a supplement to breastfeeding or as an ingredient in commercial infant formulas, so we wanted to understand the association between vitamin D and the presence or abundance of key bacteria within a baby's intestinal tract."

The researchers examined fecal samples taken during home visits from 1,157 infants who are part of the CHILD Cohort Study--a national study that is following nearly 3,500 Canadian children from before birth to adolescence with the primary goal of discovering the root causes of allergies, asthma, obesity and other chronic diseases.

They found that direct vitamin D supplementation of infants with vitamin D drops was associated with a lower abundance of Megamonas, regardless of how a baby was fed (breastfed or formula fed). "While little is known about Megamonas in infancy, our previous research suggests there may be a link between this bacterium and asthma or respiratory viral infections, so vitamin D may offer additional benefits for childhood health that should be studied further," added Kozyrskyj, also a member of the Women and Children's Health Research Institute.

The researchers also assessed the association between infant and maternal vitamin D supplementation and the presence of Clostridioides difficile (C. difficile) in a baby's gut. "Some infants carry the diarrhea-causing bacterium C. difficile in their guts without any symptoms. However, when the levels of gut bacteria become imbalanced, this particular bacterium can multiply, causing illness and increasing the susceptibility to chronic disease later in childhood," commented first author Kelsea Drall, an MSc graduate from the U of A and an AllerGen trainee.

The study found that nearly 30 per cent of the infants carried C. difficile, but there was a lower incidence of the bacterium among exclusively breastfed infants. However, neither infant supplementation with vitamin D drops nor maternal vitamin D supplementation during pregnancy or after delivery was associated with C. difficile colonization. "Interestingly, maternal consumption of vitamin D-fortified milk was the only factor that reduced the likelihood of C. difficile colonization in infants," added Drall.

According to Kozyrskyj, an infant's gut microbiota undergoes rapid change in early life. Therefore, it is critical to understand the factors associated with microbial communities populating the infant gut during this key developmental period.

"Low vitamin D levels have been associated with respiratory syncytial virus (RSV)--a common lung infection among infants--and more recently, susceptibility to COVID-19 disease," she pointed out. "In the CHILD Cohort Study, we have a unique opportunity to follow our study children as they get older to understand how microbial changes observed as a result of dietary interventions may be associated with later health outcomes such as asthma and viral infections."

For further reference log on to:

http://dx.doi.org/10.1080/19490976.2020.1799734 

Vitamin D gut Microbiota gut microbiome gut bacteria alters gut microbiome composition vitamin d supplementation 
Source : Gut Microbes
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as an Editor-in-Chief for the Speciality Medical Dialogues section. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

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