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 ...

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 ...

Saffron Cassaday had been coping with ulcerative colitis — a type of inflammatory bowel disease (IBD) marked by painful inflammation and ulcers in the digestive tract — since she was diagnosed 15 ...