Dude, I was a really sick puppy before I did the master cleanse.. which is essentially a juice fast. I was REALLY toxic, and my health improved dramatically. I didn't die from fasting, so I'm living proof that your 1st stament is wrong & 2nd statment is right: that the body is resilient. :) The reason people die from detoxing is because they don't ELIMINATE the toxins quickly enough through SWF (Salt-Water-Flush) or enemas. They die from reabsorbtion. If ya' know what you're doing then things go smoothly.
PS ~ from your other post, I understand you didn't do the Epsom Salts at all? The ES relax the bile ducts so the stones can come out. You're having ongoing pain because your stones are stuck. The ES are necessary to relax the ducts & let the stones out. IF you skip them, stones will get stuck, you will have pain, you will pass stones a week later as they finally {over a painfull period of time} make it out the duct. If you're still in pain take some ES and you should feel better & prob pass more stones. Good luck keep us posted! :)