Can formula feeding cause dark green bowel movement in babies?
Patient: my 6 month old baby has been excusivly breast feed for the past 6 month but now he is formula feed during the day and breast feed at night,  but now he is pooping dark green solid poop and some times a bit lighter dark green but wetery poop what is going on? Doctor: hello. passage of greenish stools is due to incomplete digestion of milk sugars. vegetable oil in formula milk can also give rise to loose stools. if baby is gaining weight properly and is comfortable paying urine adequately, be relaxed.