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20世纪30年代,美国发病率最高的癌症是胃癌。但在冰箱普及的50年代后,胃癌发病率降至第14位。医学者们以此为依据分析说:“食用不新鲜的食物是引发胃癌的最大因素。”
In the 1930s, the highest incidence of cancer in the United States was gastric cancer. However, after the popularity of the refrigerator in the 1950s, the incidence of gastric cancer dropped to 14th place. Based on this analysis, medical scholars said: “Food is not the most fresh food is the largest factor in gastric cancer. ”