On 1740s Cadogan became an honorary medical attendant of the London Foundling Hospital for abandoned babies. In 1748 Cadogan published his text An Essay upon Nursing and the Management of Children from their Birth to Three Years of Age based on his experiences with the foundlings and his own children comparing human infants to animal young.
In the 1740s, Cadogan took on a honorary medical role at the London Foundling Hospital caring for abandoned infants. He published his work "An Essay upon Nursing and the Management of Children from their Birth to Three Years of Age" in 1748, drawing from his experience with both human and animal young.