Scientists have discovered that important 'good' bacteria arrive in babies' digestive systems from their mother's gut via breast milk.
Although this does confirm that when it comes to early establishment of gut and immune health, 'breast is best', a greater understanding of how babies acquire a population of good bacteria can also help to develop formula milk that more closely mimics nature.
The study, published today (22 August) in Environmental Microbiology, which is a journal of the Society for Applied Microbiology (SfAM), was led by Professor Christophe Lacroix at the Institute for Food, Nutrition and Health, ETH-Zurich, Switzerland.
Professor Lacroix said "We are excited to find out that bacteria can actually travel from the mother's gut to her breast milk.
"A healthy community of bacteria in the gut of both mother and baby is really important for baby's gut health and immune system development." The Zurich team found the same strains of Bifidobacterium breve and several types of Clostridium bacteria, which are important for colonic health, in breast milk, and maternal and/or neonatal faeces. Strains found in breast milk may be involved in establishing a critical nutritional balance in the baby's gut and may be important to prevent intestinal disorders.
Professor Lacroix continued "We're not sure of the route the bacteria take from gut to breast milk but, we have used culture, isolation, sequencing and fingerprinting methods to confirm that they are definitely the same strains." Future research will hopefully complete the picture of how bacteria are transferred from mother to neonate. With a more thorough knowledge, we can decide which bacterial species will be most important as probiotics in formula. But until then, for neonates at least, the old adage is true, breast is best.
1. The article referred to is: Vertical mother-neonate transfer of maternal gut bacteria via breast-feeding. Ted Jost, Christophe Lacroix, Christian P. Braegger, Florence Rochat and Christophe Chassard.
Environmental Microbiology, Accepted Articles, doi:10.1111/1462-2920.12238 Please contact Ben Norman, Life Sciences Publicist, Wiley Blackwell, firstname.lastname@example.org, for the full text.
2. To arrange an interview with Professor Lacroix, please contact Nancy Mendoza, Society for Applied Microbiology, on +44 (0) 7920 264596.
3. About the Society for Applied Microbiology (SfAM) SfAM is the oldest UK microbiological society and the voice of Applied Microbiology within the UK. SfAM has members across the globe from all sectors of applied microbiology.
SfAM works in partnership with sister organizations and microbiological bodies to ensure that microbiology and microbiologists are able to exert influence on policymakers within the UK, in Europe and worldwide. SfAM publishes five internationally acclaimed journals with Wiley-Blackwell.
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