Can blueberries have the same effect as prunes?

LSU628

The past two mornings we have introduced apples with blueberries. And the past two days, DD has had major blowouts. I don't think she is having a reaction, but her poop is definitely way softer than usual. Anyone else LO's have the same reaction to blueberries?

houndbaby

we give ds blueberries to get things moving if he hasn't pooped in awhile