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.

“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 ...

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

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 ...

The blue poop challenge, developed by a group of researchers at ZOE, can give a person important information about their gut health. Healthcare science company ZOE worked with Dr. Sarah Berry, the ...

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 ...

If you check out the toilet bowl after you go No. 2, well, join the club: People are fascinated by their poop. After all, it constantly varies in size, shape, and color—and that’s one major reason why ...

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