Coffee Enema Erectile Dysfunction: What the Evidence Shows and Practical Considerations Gwyneth Paltrow's lifestyle 'detox guide' promotes coffee enema. Experts say it's bogus. What does a coffee enema do? Coffee enemas, a controversial alternative medicine practice from the 1920s, lack scientific evidence and pose significant risks, according to gastroenterology experts. It's one of our favorite detox moves a dose of coffee is administered directly into your body through an enema. Coffee enemas support mechanical cleanout of the colon, but they do