It's maddening just how much is still not known about so many various diseases.
During the course of life, it seems the number of people with complaint's about >stomach and bowel< problems (or anything with the Gut) is second only to people with BACK problems and associated pains. These things are NOT NATURAL for a human being on such a CHRONIC and widespread basis - and they are largely the result of the UNNATURAL physical and mental stress (not mutually exclusive) which we are forced to endure for many hours almost *every day* - mostly in the name of our "jobs", but also in many other ways. Although you won't hear this aspect talked about very much, anyone who refuses to acknowledge it definitely has their head up their ASS (if you'll excuse the pun), having been successfully programmed through their lives simply to accept the unnatural as "normal" and something one has to "live with". Unfortunately, this would seem to be most people -- or at least enough that nothing is ever likely to change.
We were not made to STAND or SIT for extended periods of time, for example. Also, our natural body rhythms are severly interfered with; having to awaken & arise to an "alarm", for instance, rather when are bodies are naturally ready. Also things like the unnatural pressure we feel to "postpone" bodily functions - usually for the convenience of some "thing" other than our *selves* and our own well being. For instance, if one is just about to leave for work or school and suddenly feels the urge to poop, they are forced to choose between fulfilling their body's natural needs
- and therefore possibly being late for work - or "holding it". How many hundreds of millions of human beings are forced to go through this EVERY day, do you think?
Unless it is *extremely* urgent, most people will choose to put it off with the intent to "go" after they get to their work or school. Often by that time the periostolic waves have at least diminished to the point where the person decides they can (or should) continue to "hold it" until, say, their first "break" period or something. Whenever it happens that they finally DO get to the toilet - even as the urge returns - they then often end up *straining* to move their bowels (which could have been moved easily had they gone when first the need arose), and maybe will get some out in "dribs & drabs". In many cases the rest will be "stored" until they get home again when they can attempt to push out the remainder in "peace"... if they're lucky. This process becomes more or less habitual for alot of people (through perceived necessity) and creates a situation where it becomes more difficult to "go" in general, and so many people end up having their bowel movements in what amounts to unnatural
"installments". This may not have much to do with the first 3 syndromes you list, but it would seem to have *alot* to do with IBS - and "impacted stools",
constipation, hemorrhoids (from frequent "straining")
gas, bloatededness, etc. Basically what we have are sicknesses due directly to some of the "sick" constructs we have allowed to run our lives every day
as millions of bottles & boxes of stomach medicines and pack pain "relievers" continue to fly off store shelves.
Anyway, I like your drawing very much; the primitive "stick figure" like style seems to work well for the purposes of the subject.