First let me say that I am not a medical professional. The information offered here is not medical advice; it is provided in the hope, but without the guarantee, that it may be useful. Your mileage, as they say in the automobile commercials, may vary. You are encouraged to take responsibility for your own well-being. Do do due diligence, but beware of “doo doo”. Worthy research on the subject should turn up quite an array of beliefs, benefits, truths, half-truths, and lies (that's the doo doo). You can decide what is right for you.
As you may know, health and personal hygiene practices have been, are, and will probably continue to be subject to the vagaries of human opinion. Take bathing, for example. During the time of the Roman Empire bathing was popular, and most Romans took a daily bath. But during the Middle Ages, in Western culture at least, bathing was discouraged. The face, ears, neck might be washed, as could hands and feet, but bathing the entire body was considered rude, unnecessary, and dangerous. Quite a far cry from those health-conscious Romans! Side note: I read that Indiana still has a law prohibiting bathing during the winter. As I am writing this in February, 2011, I am pretty sure that I have some friends who broke this law, today.
Around the time of the Renaissance the pendulum of opinion started to swing back the other way. By the mid 17th century, prosperous Western people were taking a full bath once a year, whether they needed it or not. Guess what? They always did. Side note: I read that Kentucky still has a law that requires Kentuckians to take at least one bath a year, minimum. I don't know anyone who is breaking this law.
In the 1800s, germ theory became widely accepted, and people were encouraged, in the interests of health, to bathe more. By now most of us take a bath or shower more or less daily. So currently the idea of an external bath is pretty well accepted. The idea of an internal bath, though, is not so popular. In fact some folks consider an internal bath rude, unnecessary, and even dangerous. Sound familiar?
Nevertheless down through the ages, certain people have practiced, and even advocated, colon cleansing. Here are some of the better-known: Cleopatra, famed Egyptian queen; Dr. Harvey Kellogg, developer of Kellogg's Corn Flakes; film star Mae West; John Lennon; Madame Chiang Kai Shek; Princess Diana; and Janet Jackson. Madame Chiang lived to be 105, so she must have been doing a lot of things right. Regular colon cleansing was one of them.
So what follows is one version for the design, construction, and directions for use of a colonic irrigation kit. I look forward to seeing others' suggestions and improvements.