Last night, you treated yourself to a wonderfully rich dinner of duck confit followed by pecan pie topped with freshly whipped cream. Today, your post-coffee trip to the toilet turned out to be unusually unpleasant. (These are the toilet mistakes you didn't know you were making.) Not to be indelicate, but how on Earth did that thing come out of you? Not only did it take three whole flushes to go down, but it also left...how was this even possible...a greasy stain in the bowl? This is actually known as steatorrhea, or the more commonly used term "oily stool." (Here are the 9 weird pooping habits, explained by science.)

Steatorrhea refers to bulky, foul-smelling, oily stool that tends to be pale in color and float in the toilet bowl, resisting flushing. (These are the 9 most common reasons your poop is black.) If it happens just once, or after a particularly fatty meal, especially if accompanied by a moderate amount (or more) of alcohol, then you have your reason: Consuming a lot of fatty foods can overwhelm your gastrointestinal (GI) tract and your body fails to digest it all, according to Baltimore colon and rectal surgeon, Jeffrey Nelson, MD, the surgical director at The Center for Inflammatory Bowel and Colorectal Diseases at Mercy Hospital. As a result, some of that fat traveled straight through your gut and out the "exit" without getting digested. (Here are the signs your gut bacteria are unhealthy.)

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