Quest Vitamins LTD,
Constipation is diagnosed as a chronic delay of a normal bowel pattern.
Bowel habits vary widely, although there is a tendency for those eating a typical Western diet, with less roughage (fibre) and more fats to experience less frequent elimination than diets with more variety and nutritious fibre.
In rare cases, various diseases can influence elimination, including nerve damage and endocrine imbalances.
1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, 2d ed. New York: John Wiley & Sons, 1996, 128-30.