Objective: In Japan, phosphorus intake may be increasing because a westernized diet and processed foods have become more popular among Japanese people. The objective of this research was to assess the daily phosphorus intake in young healthy adults, and to reveal the effects of dietary patterns on phosphorus intake. Methods: 32 healthy participants (14 males, 18 females) were enrolled. The mean values ± standard deviation for age was 22.1 ± 1.5 years. Urine samples were collected over 24 hours

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... nd dietary intake was weighed and recorded. We estimated dietary phosphorus and protein intake from the 24-hour urine collection. Energy intake, the intake of 18 food groups, and a ratio of processed food intake, were calculated from dietary records, and investigated associations with phosphorus intake. Results: The mean dietary phosphorus intake was 951 ± 179 mg/day (minimum: 564 mg/day, maximum: 1,445 mg/day). A total of 70.8% of participants consumed more phosphorus than the recommended dietary intake. The food groups contributing high phosphorus levels were meat, dairy and preferred beverages. Processed foods contributing to a high phosphorus intake were instant foods, confectionery, preferred beverages (soda) and ready-made meals. Conclusions: Our research suggests that meat, dairy and preferred beverages should be consumed within the appropriate range to prevent a high phosphorus intake, and consumers with a high intake of instant foods, confectionery, preference beverages (soda) and ready-made meals should be advised accordingly. Jpn. J. Nutr. Diet., 75 (5) 131~140 (2017)