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肉类蛋白含量高的膳食(通常嘌呤含量也高)可增加尿中钙、草酸盐和尿酸的排泄。因它们是引起钙结石形成的6种主要危险因素中的3种,所以可以预期结石生成的危险也会增加。反之,肉类蛋白含量低的膳食(如素食者的饮食)产生的尿中钙、草酸盐和尿酸的排出就低,结石生成的危险性也小。作者进行研究的目的是查明素食者的结石是否少于非素食者。作者在联合王国素食者协会的协作下,随该会月刊向6,000名会员邮寄了问答式调查表,查明了泌尿系结石的发病率。该表的项目有年龄(必须在20岁以上)、性别、职业、素食
Meal-rich meals (often high in purines) increase urinary calcium, oxalate and uric acid excretion. Because they are three of the six major risk factors that cause the formation of calcium stones, it is expected that the risk of stone formation will also increase. Conversely, low-protein meals (such as vegetarian diet) produce urinary calcium, oxalate and uric acid excretion is low, the risk of stone formation is small. The purpose of the study was to determine if vegetarians had fewer stones than non-vegetarians. In collaboration with the Veggies Association of the United Kingdom, the authors sent a question-and-answer questionnaire to 6,000 members following the monthly newsletter, identifying the incidence of urolithiasis. The table items are age (must be over the age of 20), gender, occupation, vegetarian