Dietary survey was carried out on eight different groups of Japanese and daily intake of various minerals of these groups were calculated from the food tables presented in various literatures.
The average daily intake of seven elements were estimated as follows: Calcium, 548 mg; magnesium, 213 mg; potassium, 2,618 mg; phosphorus, 1,121 mg; iron, 10.3mg; zinc, 16.2mg; and copper, 1.21 mg.
Among these groups, amount of mineral intake was especially low in the group of female students.
It is clarified that major food sources for minerals were different between peoples in rural area and urban area and between young generation and old generation.
