Origin of Our Microbiome

Origin of Our Microbiome during pregnancy

The microbiome consists of trillions of beneficial bacteria that support our bodies in many ways. Some bacteria play an essential role in digestion and in separating the waste and processing it so that it can be excreted. Other bacteria play a role in our reproductive system. When I was a student at Notre Dame, there was a germ-free laboratory on campus where researchers raised animals with no bacteria. One of the complications of doing that was that even rabbits could not conceive if they were germ-free. For years, scientists have debated the question of the origin of our microbiome.

One interesting discovery that has come from prenatal research is that pre-born babies have their own microbiome separate from their mothers. For the past century, medical experts believed that babies acquired their microbiome at or shortly after birth. Research like that done at Notre Dame was thought to support the” sterile womb paradigm” hypothesis. Recent research has suggested that the origin of our microbiome may be from small amounts of bacteria built into the placenta. Discover magazine (June 2020, page 16) reviews the debate over when babies get their microbiome. Part of the problem is that it is very easy for contamination to get into the research specimens creating confusion over whether the bacteria were natural or if they came from contamination.

Our interest in this subject is not so much about the origin of our microbiome as to look at the implications of the data. Everyone agrees that the baby does not have its mother’s microbiome. Some microbes like E. coli are so common that they are found in all microbiomes. Beyond those, there is a unique makeup to each person’s microbiome, including newborns and pre-born babies.

Maintaining that a baby is an extension of the mother and therefore has no rights is to ignore the evidence. Morning sickness is caused by the mother’s immune system not recognizing a foreign object, the baby, and going into defensive mode. The baby growing inside the mother is a unique person with its own genetic makeup, awareness, and microbiome.

The abortion issue ignores the evidence and attempts to create a new vocabulary to make it seem less brutal, but taking a baby out of the womb and killing it is still infanticide. As tough as this issue is, we need to not shield the vile nature of this process by ignoring the evidence. Instead, we should look for solutions that recognize the value of life and the worth of every human being.

— John N. Clayton © 2020