I havent read Dr Clark bbok yet but Im not so sure how good these radical flush programs are for our body. I think it is better to do it more gradually so as not to shock the body too much. That lets the blockages, stones and toxins disolve at a reasonable rate which considerably reduces the chances of nasty side effects. But of course the results can be slower to observe and in this world of instant gratification it may be a tall order for some.