Is detox another version of purging sin or something? I must be missing the point.
Earth, Water, Fire, Wind and Space are the basic elements that constitute our so called "reality" or "world". These elements must be in equilibrium for good health.The 3 humours, Ignorance,Desire and Hatred will effect our relationship to the elemental stasis we are required to maintain for health. The organs of the body have a corresponding relationship (in their function) to the elements.
Disease has its root in ignorance. Disease implies no ease or ability to relax.
Jarvis refers to this inability to relax as always having the energy expanding mechanism of the body turned on. Iodine shifts the gears of the energy expanding mechanism so it may relax.