The Blue Poop Challenge tracks your gut transit time and can reveal some interesting secrets about your digestive system. The ...

Yep, that’s right. Blue. Poop. Challenge. This didn’t start off as a viral social media trend, but as research into how well your digestive system and gut microbiome are working. And it’s ...

You expect your poop to be some shade of brown. That’s normal, as are some shades of green. When it looks unusually green, red, or even blue, the alcohol you drank could be the cause.