Abstract
Daily nutrient intake of two healthy adults (a male and a female) was measured for about fifteen months, and the daily variations were investigated.
The nutrient intakes of two subjects fluctuated considerably from day to day throughout the period of investigation. Although daily nutrient intakes did not show periodical change, most nutrient intakes decreased gradually during the period of investigation. It was found that a period between two and seven days was necessary for a dietary survey to grasp accurately the personal characteristics of the nutrient intakes.
