Bilirubin is a substance created by the normal breakdown of red blood cells. (americanpregnancy.org)
If, for example, the baby has severe jaundice due to rapid breakdown of red blood cells, this is not a reason to take the baby off the breast. (motherandchildhealth.com)
Jaundice can also affect people with liver disease or increased breakdown of red blood cells, as in malaria. (sciencedaily.com)