在过去30年中,人口统计学和流行病学研究了高发病率和低发病率地区的差别,患病和未患病人群的体质比较,并研究土壤和耕种操作——已经显示出食管癌与饮食和土壤之间的关系,在伊朗和中国的高发地区,已经证实了这些研究。食管癌与锌及核黄素间的关系也得到实验的证据。非洲广泛地使用高梁酿制啤酒,但在发病率高的地区(肯尼亚——特兰斯凯)大部分已由玉米代替。在伊朗和特兰斯凯使用一些含有鞣酸的野菜。在南 Over the past 30 years, demographics and epidemiology have examined differences in areas with high and low morbidity, physical comparisons between diseased and non-afflicted populations, and studies on soil and tillage operations - have shown that esophageal cancer The relationship with diet and soil has been confirmed in high incidence areas in Iran and China. The relationship between esophageal cancer and zinc and riboflavin has also been experimentally evidenced. Sorghum is widely used in brewing beer in Africa, but much of it has been replaced by maize in areas with a high prevalence (Kenya - Traskai). Use some tannic acid-containing wild herbs in Iran and Traskir. In the south