I think it's wise to go gluten free in any case..
aaaaauuuuuggggghhhhh.
But I know, I know, it's a good idea.
I don't actually think I could handle going full-fledged gluten-free now, for a couple of reasons.
However, the good news is that I have really cut down on my wheat intake in the last few months; where possible, I have switched to products made with the older wheat varieties like spelt; and, in the last month I have avoided all food items which might have artificial folic acid in them (which so many things do, to comply with the US law that grain items have to be fortified with it) -- and I think this has made a positive difference.
The best test is the Metametrix GI Effects stool test. I wouldn't bother with any other test. $400 though..
This recommendation is good to have! I'll put it on my "maybe/future" test list.
You can take some extra magnesium to get your bowels moving better. The more you take, the looser your bowels get, so you can make things exactly how you like by adjusting the amount. Any form except magnesium oxide is ok. Mag oxide is cheap, but doesn't absorb well. So - magnesium glycinate, taurate, citrate, etc. are ok...
I've been taking a reasonable amount of magnesium citrate for the past couple of years, 500 mg I think, with no appreciable increase in bowel frequency/looseness. I noticed that this much magnesium was above the recommended daily upper level for adult women (which I realize isn't a maximum that is set-in-stone or valid for all people), and at the same time I was about to lower my calcium citrate amount from about 500 mg to 250 mg, so I reduced the magnesium down to about 375 mg. I've taken as much as 750 mg in a day to see if it helped my bowel speed, and it didn't. Same goes for Vitamin C -- occasional doses of 2000 mg didn't seem to speed things up. Though I didn't try these higher doses continuously over a period of time. Bulk-forming things like psyllium just gum me up and are counter-productive.
I don't think clay-like is the same as white though. Mine were like that and I think that's more a reflection of diet?.
This is a light grey-brown (less brown, more grey), and the consistency is like clay. It's not like that always, but frequently.
Seems to be a problem with not having enough bile where it's needed in the system. "The liver releases
bile salts into the stool, giving it a normal brown color. You may have clay-colored stools if you have a liver infection that reduces bile production, or if the flow of bile out of the liver is blocked."
http://www.nlm.nih.gov/medlineplus/ency/article/003129.htm
http://ibdcrohns.about.com/od/otherdigestivediseases/a/palestool.htm
Floaters are due to fat in the stools. I take quite large amounts of fish oil and that causes this.
While some sources say it's mainly about fats (such as:
http://www.askanaturopath.com/faqs/floating-stools/p/212), I have also seen other sources that say it's not due to fat, but to gas in the stool:
"Many things can cause floating stools. Most of the time, floating stools are due to what you eat. A change in your diet may cause an increase in gas. Increased gas in the stool allows it to float. Floating stools may also happen if you have a gastrointestinal infection. Floating, greasy stools that are foul smelling may be due to severe malabsorption, especially if you are losing weight. Malabsorption means your body is not properly absorbing nutrients. Most floating stools are not caused by an increase in the fat content of the stool."
http://www.nlm.nih.gov/medlineplus/ency/article/003128.htm
"Floating stools are seen in a variety of different situations. Most are diet-related, or occur during a gastrointestinal infection. A change in diet can lead to an increase in the amount of gas produced by the bacteria found in the (healthy) gastrointestinal tract....
One wrong idea is that floating stools are caused by an increase in the fat content of the stool. In fact, it is increased gas in the stool that makes it less dense and allows it to float.
Increased levels of nutrients in the stool that have not been absorbed by the GI tract supply the normal bacteria that live in the gut. These bacteria, in turn, produce more gas. This results in more gas-rich stools that float.
...Dietary changes, diarrhea, and malabsorption can cause floating stools."
http://health.nytimes.com/health/guides/symptoms/stools-floating/overview.html
In my case, I only have diarrhea about once every 5 years, so it's not due to that. My diet doesn't change that much (except I have reduced ingestion of mainstream wheat in the last few months, as mentioned above). I have not taken any supplements for the last 8 weeks, and still have incidents of floating, so it's not due to fish oil. The floaters aren't particularly "greasy and foul-smelling", but kind of dryish-looking.
Also, in just the last year, about once per month, I'll notice that a 5-inch strand of cloudy-but-mainly-clear mucus (maybe 1/3rd inch in diameter) comes out during a bowel movement. (I know, it's yucky - sorry!) I tried to look it up - seems to be a sloughing off of the lining of the intestines?
For most of my life, until the last few years, my poo was in the shape of thick, heavy, dense logs with cracks on the surface (for example, 1.5 in x 6 in in size) (type 3 on Bristol Stool Chart:
http://en.wikipedia.org/wiki/Bristol_Stool_Scale), but in the last few years it has been separate balls the size of walnuts, and usually each ball is entirely separate (type 1 on Bristol Chart), but sometimes they appear in the bowl partially-melded together (Bristol type 2). Some balls float, some don't.
I am so sorry if this is way too much information, haha!