The stimulus is provided by the presence of a bulky mass, acting somewhat in the manner of a pressure valve. There seems to be no set pattern. Generally speaking, one bowel movement in 24 hours is to be expected. However, this rate varies considerably with individuals and longer intervals should ordinarily be no great matter of concern. Constipation should be more accurately reserved for those who have difficult bowel movements or suffer symptoms as a result of irregular evacuations.
Intestinal toxemia is another thing.
It may have no relation to constipation. In fact, it is the other way around. Intestinal toxemia is more likely to result in diarrhoea. This is because intestinal toxins act as irritants and the body attempts to rid itself of the effects of this irritation. Three types of toxins may be present in the intestinal tract.