Scientists believed for a century that the human fetus is sterile and only becomes infected with bacteria during and after birth. Only in recent years did we find that’s not true. I love it when we scientists are flat out wrong because it upholds the first rule in science: to question – even things we take for granted.
It was in 2010 that a researcher tested the first stool samples of newborns right after birth and found a diversity of bacteria there. Since then the focus has been on how and from where the mother passes the bacteria on to her fetus. And, do the microbes include potentially harmful specimens or beneficial ones known as our microbiome which live in and on us to keep us healthy... More »