Abstract
A survey on nutritional status of vitamin B1 intake was carried out on middle-aged farming (n=196) and clerical couples (n=206) living in Kyushu in 1985 and 1980. The results of the survey were as follows. 1) In 30 farming couples, blood vitamin B1 levels were very low (40.68±20.04ng/ml for husbands and 33.16±12.77ng/ml for wives), and 60.0% of husbands and 73.3% of wives had levels less than 40ng/ml. 2) Amount of vitamin B1 intake was 0.78±0.38mg/day and 0.65±0.32mg/day (loss of vitamin B1 by cooking estimated at 50%) on average in husbands and wives, respectively. Proportions of intake relative to the requirement calculated from total energy intake (0.4mg/1, 000kcal) were 80.4% and 81.3%, respectively. 3) Both farming and clerical couples showed relatively low intake of vitamin B1. 4) The amount of vitamin B1 intake tended to be insufficient under conditions of higher rice intake.
