On the other hand, 2 RZCers have mentioned having issues with constipation at times.
I'm a VLCer with constipation, though my constipation has been lifelong, so it long preceded my period of ZC and my current VLC diet. ZC/VLC actually got rid of most of my IBS-C with D symptoms that used to accompany the constipation. Now I have what appears to be just plain chronic constipation with little or no IBS.
Strangely enough, my experience was almost the opposite of Lex's and Tyler's. After a couple of weeks of ZC my constipation greatly diminished and almost disappeared. Then it gradually came back again over the next couple of weeks after that. I eventually became about as constipated as I had been before, except with the difference of the gradual disappearance of IBS symptoms (which I'll spare people of the details, since some were rather gross).
Today, after five years, I usually have BM every day but it is very small, maybe a couple of pieces about the size of your thumb.
Interesting. DelFuego and Charles Washington reported similar phenomena, but Tyler dismissed it as nonsense. Maybe TD will believe it now that one of our own is talking about it in some detail. As I've mentioned in the past, my own fecal volume decreased too, though not yet as much as yours, Lex, as I haven't been doing VLC for nearly as long as you have been doing ZC.
The colon was firm, smooth, and had great muscle tone. There were no signs of polyps or any other abnormality. I was told not to bother to repeat the procedure, as it was clear that I wouldn’t be dying for colon cancer anytime soon.
Lex
Yes, I used to have a flaccid colon with very little signal to go any more and an inguinal hernia. I had to rely on memory to go, rather than natural signals. The muscle tone in both the colon and inguinal canal wall has since greatly improved. ZC and VLC have been a godsend for me in this area. Simply miraculous! I had never heard of this sort of improvement before and none of my physicians told me about it or that dietary change could help with it.
One of the few things that has helped my constipation other than VLC is trying to go at least once a day whether I get the urge or not. I know, I know, nearly everyone says that if you're going every day or two you can't possibly be constipated, but my stools tend to be dry and hard and like #'s 1-3 on the Bristol Stool scale no matter how frequently I go, and it quickly gets much worse if I wait more than a day. Plus, I usually cannot achieve complete evacuation on any given day, because I usually only manage to evacuate the stool that's near the exit point. If I don't manage to go every day, my feces quickly become very dry and compacted and difficult to move. The standard advice to eat plenty of plant foods and fiber never helped much and only succeeded in giving me mineral deficiencies, and the advice to eat more whole grains had particularly harmful effects on me.
In addition to going every day the following advice to eat a big fatty meal in the morning, to trigger the gastrocolic reflex, with the fat greasing the way, helps me somewhat:
"If you suffer from constipation predominant IBS (IBS-C), you may be able to encourage a bowel movements, particularly in the morning, by eating a large meal with some fat content." ibs.about.com/od/glossary/g/gastrocolic.htm
"In periods between meals, the colon is generally quiescent. Following a meal, colonic motility increases significantly, due to signals propagated through the enteric nervous system - the so called gastrocolic and duodenocolic reflexes, manifestation of enteric nervous system control. In humans, the signal seems to be stimulated almost exclusively by the presence of fat in the proximal small intestine. Additionally, distension of the colon is a primary stimulator of contractions."
http://www.vivo.colostate.edu/hbooks/pathphys/digestion/largegut/motility.htmlThe usual advice in this forum to eat one big meal in the evening or afternoon does not work well for me. My differences re: what works for my constipation from the usual advice in this forum demonstrate once again that there can be great variability of experience between different individuals and we should try to avoid broad-brush assumptions about everyone. From what I've seen, extrapolation of individual experience onto others and overgeneralization in general is the most common error people make in their posts on dietary forums.
".... the conversion from raw plant food (especially raw starches) which isn’t digested well and therefore passes through quickly, can take several months. I think it was almost a year before I’d say that I was what I’d call ‘regular’. Also, assuming you are eating mostly meat and fat, the fat content of your food will make a big difference. Less fat will make more firm and well formed stools where very high fat intake will make soft and pasty stools."
Lex
It has been about 14 months since I reached 99% ZC and I still have daily constipation. This is probably because I already had constipation before going ZC/VLC.
So the important thing seems to be to find what works for you, because the variations between individuals can be extensive.