A member asked:

What can cause blue stool? my son is 23 months old the only thing out of the normal foods was a cupcake with sprinkles yesterday. thanks

4 doctors weighed in across 2 answers

Food Dyes: The color is due to the breakdown of food dyes - either from the icing on the cupcake or the sprinkles. It should pass in another day. Personally have seen some funky stool color after patients have eaten birthday cake!. Only stool colors to be worried about are red, tarry black or very white.

Answered 11/28/2017

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Dr. James Blachly answered

Specializes in Medical Oncology

Food dyes: Food dyes (frosting, sprinkles, ice cream) are known to tint stools.

Answered 9/6/2015

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