Although green, yellow, and brown hues are generally normal, black, red, or white poop may sometimes signal underlying issues. In the first week of life, a baby's stool changes from meconium to ...

The poop of newborns is almost black, while older infants tend to have yellow or brown poop. Breast milk and formula can also influence the color of a baby’s stools. Red or white poop can ...

Nelson, surgical director at the Center for Inflammatory Bowel and Colorectal Diseases at Baltimore’s Mercy Medical Center, said if your poop is black, “not just dark brown,” you should be ...