
Changing diapers is a fact of life for new parents
Ian Allenden / Alamy Stock Photo
Parents aren’t easily disgusted, but only once their child has started eating solids. The level of disgust that parents experience seems to change over time, which could have evolved to both protect their child and prime their immune system.
Disgust probably evolved as a way to avoid pathogens, such as those in faeces or vomit, as a sort of “behavioural immune system”, says Hannah Berg at the Laureate Institute for Brain Research in Tulsa, Oklahoma, who wasn’t involved in the new research.

Felecia Phillips Ollie DD (h.c.) is the inspiring leader and founder of The Equality Network LLC (TEN). With a background in coaching, travel, and a career in news, Felecia brings a unique perspective to promoting diversity and inclusion. Holding a Bachelor’s Degree in English/Communications, she is passionate about creating a more inclusive future. From graduating from Mississippi Valley State University to leading initiatives like the Washington State Department of Ecology’s Equal Employment Opportunity Program, Felecia is dedicated to making a positive impact. Join her journey on our blog as she shares insights and leads the charge for equity through The Equality Network.