| tea-gruel as a possible factor for cancer for the esophagus. | specific death rates for esophageal cancer by each city and county in japan were calculated. nara and wakayama prefectures formed a high death-rate area with some neighboring cities and counties in other perfectures. inhabitants of these area are known by the custom of taking "chagayu", tea-cooked rice gruel. according to this survey on the habit of taking hot tea-gruel, with over 5,000 teachers and their families aged over 50 years old, the distribution of the precentages of taking tea-gruel am ... | 1975 | 1150011 |