Blue is far from the usual stool color, but it isn’t usually a cause for concern. Most of the time, blue stool is due to blue pigments or dyes that come out when your food is digested. If you take a ...

Eating certain foods can cause a person to have blue poop. People should be aware of their stool and seek medical care if there are any major changes. People can pass blue stools if they consume food ...

“Hearst Magazines and Verizon Media may earn commission or revenue on some items through the links below.” If you check out the toilet bowl after you go No. 2, well, join the club: People are ...

Add Yahoo as a preferred source to see more of our stories on Google. I was part of a study where researchers tracked how long it took blue food dye to move through my system. Hilary Brueck/Insider I ...

The Blue Poop Challenge measures gut transit time by tracking how long it takes blue food to pass. People with shorter gut ...

The internet has asked people to do numerous strange things before, from eating spoonfuls of cinnamon to planking. But now it wants you to turn your poop blue—for your own good, of course. Research ...

I was part of a study where researchers tracked how long it took blue food dye to move through my system. Hilary Brueck/Insider I turned my poop blue for science (well, sort of), and you can too.

Colleen Murphy is a senior editor at Health. She has extensive experience with interviewing healthcare providers, deciphering medical research, and writing and editing health articles in an ...

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