You're right that there IS a concern about the safety of doing constant coffee enemas. Too many can deplete your electrolytes, a serious health concern. The trick is to replace the electrolytes with fresh-squeezed vegetable juices. On the Gerson therapy and the Kelley therapy patients drink such juices many times a day, and that is what makes the constant coffee enemas safe. The Gerson people recommend a ratio of one coffee enema for every 3 cups of fresh-squeezed juice. I'm sure it's okay to exceed that for a while but over the long term it's probably a good idea to keep that ratio in mind. They're also loaded with easy-to-assimilate nutrients and are one of the best things you can do for your health!