In the September edition of the Ladies' Home Journal Michelle Obama lets slip that she does the occasional dietary cleanse. Generally a cleanse involves a very low calorie quasi fast during which the cleanser may also take natural laxatives. The theory behind most cleanses is that you excrete toxins from your body. Mainstream medicine scoffs at cleanses, points out that there is no evidence that they are even necessary or work, and notes that the liver, kidneys, lungs, and intestines are very efficient filters. In reaction to the First Lady's revelation mainstream medical commentators gently registered concern, and the First...