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尿路結石形成と食事との関係を明らかにする目的で尿路結石患者の食事調査を行った.36例(男24例, 女12例)のカルシウム結石患者の栄養摂取量を調べ, 日本人の栄養所要量と比べ, つぎのごとき結果をえた.結石患者は男女別でも, また全体でも栄養所要量に比べて, 総蛋白質, 動物性蛋白質, 動物蛋白比すべて有意に高かった.食塩摂取量は男および全体で結石患者に有意に高く, 女でもその傾向がみられた.カルシウムおよび炭水化物は男および全体で結石患者の摂取量が所要量より有意に低く, また女でもその傾向がみられた, To clarify the relationship between renal stone formation and the diet, the consumption of various nutrients of calcium stone formers was investigated. The study included 24 male and 12 female stone formers, between 20 and 78 years old (mean 42 years). The daily consumption of nutrients was compared to the daily nutritive requirement for the Japanese. The amounts of total and animal protein ingested by all the patients were significantly larger than the daily nutritive requirements. The animal protein ratio was also significantly higher. Concerning the total protein, animal protein and animal protein ratio, male and female patients showed similar results. Salt consumption was significantly larger for all the patients and the male patients than the daily nutritive requirement for the Japanese. Female stone formers also showed this tendency. Consumption of calcium and carbohydrate by all the patients and the male patients was significantly smaller than the daily nutritive requirement. This tendency was observed for the female patients.