Diaper changing is a fact of life for new parents
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Parents are not easily disgusted, but only when their baby starts eating solid foods. The level of disgust felt by parents appears to change over time, which can develop to protect and guide their children Immune system.
Disgust may have evolved as a way to avoid pathogens, such as those found in feces or vomit, as a kind of “behavioral immune system,” he says. Hannah Berg at the Laureate Institute for Brain Research in Tulsa, Oklahoma, which was not involved in the new research.
