It has been assumed that the occurrence of gallstones is closely related to the daily diet. In this respect, we conducted two studies, the results of which appeared in two issues of the Japanese Journal of Nutrition (Vol. 28, No. 5, 1970 & Vol. 30, No. 4, 1972) since there had not been any previous detailed studies on such a relationship.
We have made a further study on the relationship between the pain experienced by cholelithiasis patients and their daily diets. Ninety-one percent of the patients who were conscious of an unpleasant feeling in the stomach, gastralgia, colic pain, or backache, reported what they had consumed prior to the development of such symptoms. These included pork, Chinese-style food, fried seafoods, and excess eating or drinking. It was also found—depending on the type of the fatty acid—that there are dietetic differences in digestion, absorption, and types of pain, and also that excessive physical or mental fatigue is a factor.