Burkitt D P
Arch Surg. 1976 Dec;111(12):1327-32. doi: 10.1001/archsurg.1976.01360300017002.
The high prevalence of varicose veins in Western countries contrasts with their relative rarity in traditionally living communities in the Third World. Evidence is presented in support of the hypothesis that a major causative factor is the transmission of raised intra-abdominal pressures to the veins of the legs. One important cause of these pressures is the abdominal straining necessitated to evacuate small firm stools, which in turn are the result of fiber-depleted diets.
西方国家静脉曲张的高发病率与第三世界传统生活社区中静脉曲张相对罕见形成对比。现有证据支持以下假说：一个主要致病因素是腹腔内压力升高传递至腿部静脉。这些压力的一个重要原因是排出硬结小粪便所需的腹部用力，而这又是饮食中纤维缺乏的结果。
