Saffron Cassaday, right, pictured with her husband and stool donor, Al Mukadam. Cassaday did fecal microbiota transplantation, which involves transferring stool from a healthy donor to a patient to ...

Banking samples of your own poop in your youth and then transplanting them back when you're old might be a key to healthy aging, scientists suggest. Stool samples frozen and stored when a person is ...

A fecal fat test measures the amount of fat in a person’s stool. The test assesses the digestive function and absorption of fat in the gastrointestinal tract. Several medical conditions cause poor fat ...

Changes in the way that humans live and eat have resulted in tremendous alterations in the gut microbiome, especially over the past few decades. These changes have been linked to increased rates of ...