If there's fecal transfer I would think its between the baby and the mother. A baby poops a lot and a mother cleans up, probably gets some on her hands. Maybe a

If there's fecal transfer I would think its between the baby and the mother. A baby poops a lot and a mother cleans up, probably gets some on her hands. Maybe a baby regulates the mothers digestive system in some beneficial way to the baby. Many women never get back to the shape they were in before birth and stay fat after? Could be a permanent change in their gut bacteria, caused by the baby to get the mother to overeat to produce more milk for the baby.