Substance use disorder can involve addiction to and dependency on alcohol, drugs, and more. Learn its causes, its treatments, ...

Doctors are tapping into to the emerging field of the gut microbiome to try to treat some diseases differently.

Q: My elderly mother had C. diff, as did a dear friend of mine who had been hospitalized. Both were treated with vancomycin, but the C. diff would return with debilitating diarrhea.