Constipation is a common, virtually inevitable side-effect of all narcotics* and not just of Vicodin and heroin. In fact, as a general rule, it’s advisable to prescribe a so-called ‘bowel regimen’ to anyone who’s going to be using narcotic drugs for more than a couple of days. And, even with the use of such a regimen (often consisting of a combination of several laxatives), constipation is still very common.
*narcotics, e.g. codeine (in Tylenol #1 2, and 3 among many others), oxycodone (in Percocet, Oxycontin), meperidine (Demerol), hydromporphone (Dilaudid), morphine, hydrocodone (Vicodin), . . .
Metabolizing fats and sugars while fasting takes place within the bloodstream - the fats you’re breaking down don’t go from your love handles into your intestines to be digested, leaving remnants for you to excrete. Any wastes from this sort of metabolism will be passed in your urine. Something exiting your digestive tract must have been in your digestive tract, so it was probably bits of a slow migrating lunch from a day or two before the fast.
In fact, I thought I’d seen narcotic-containing preparations used to help combat diarrhea but can’t find any cites right now.
I have periodically gone on a course of iron supplements (medically supervised, not done at random) and have found I have to basically alternate them with Fibercon tablets - the iron in the AM and the Fibercon in the PM, or every other day one or the other, or some such. otherwise, shit DON’T happen and misery DOES.
A friend and I had our gallbladders removed within a few days. We both got narcotics from our surgeons. Both of us knew about the side effects and were loading up on the high-fiber foods, stool softeners etc. - but in NEITHER case were we reminded of this by the medical staff. In fact I asked the nurse for some Colace while I was still in the hospital, and she looked at me like I was nuts (by contrast, the “new mom goodie bag” from each of the hospitals my kids were born in included several doses of that, LOL).
This sort of “leftover” can even survive phase one of colonoscopy prep… which I guess is why they have you do two phases.
You’re basically excreting pure Gatorade (or whatever) a few hours into the first stage… but as I found the next day, there was sludge when I did stage 2. Weird.
Actually though: since the gut does have some flora, and a large part of the bulk of your feces is dead bacteria, maybe that’s where the sludge (and Dog80’s fasting poops) came from.
I don’t know about “weeks,” but In 1969 I was drafted and sent to the Marines. It wasn’t until the 13th day in boot camp that I had a bowel movement, I ate every day and felt no discomfort. Figure it was simpy the shock to my system (physical and mental).
I had an opiate addiction in the past (not any more). I do recall that on one occasion, I went approximately 2.5 weeks without a BM. I didn’t feel much discomfort during this time. It is the case, with opiate use, that you have a significant loss of appetite, so I wasn’t exactly pumping much solid food into my body during that time.
Probable TMI, but when I finally did “go” after those 2.5 weeks or so, it was about an hour long process. When the “poo passed the starfish” as it were, it was extraordinarily painful, resulting in pretty much primal screams from me. Looked into the toilet after that, and saw a log about 3 inches wide. Very surreal.
So while a month may be possible, my anecdotal experience leads me to believe it would be extraordinarily unhealthy, and quite painful when you do finally let loose.
Also, when I was younger, I went a full week without a BM at Boy Scout camp. Why yes, I did have issues with the “open” configuration of the outhouses. I don’t recall any significant issues relating to that, though.