1995 Volume 61 Issue 4 Pages 179-194
Nutrition surveys were performed to investigate the changes of dietary habits followed up from 1979 to 1989. The 116 subjects surveyed were middle-aged or older women in rural and suburban areas. The results are summarized as follows: 1. In rural areas, dietary habits showed remarkable changes after ten years. The percent energy from carbohydrate of cereal origin decreased, while that from both fat and protein increased. These trends were mainly due to less intake of rice and miso, and more intake of bread, cakes, oil and fats, soybean and bean products, eggs, milk and dairy products, and processed foods. In suburban areas, the percent energy variation was small, and the changes of dietary habits were characterized by less intake of oils and fats, and more intake of potatoes, seaweed and fish. 2. The changes of fat intake were especially different between these two areas. By log-linear analysis, both regional environment and amount of fat intake in 1979 inffluenced the change of that of ten years later. 3. In 1979, staple foods like rice or bread for breakfast characterized dietaryhabits and the differences in percent energy. But in 1989, there was no difference in these dietary habits among morning staple types. 4. The standardized intake of 19 food-groups were obtained from 116 subjects in both areas in 1979, and the correlation matrix among these foods was calculated. The correlation matrix was also submitted to a principal component analysis. Factors causing food intake patterns were 1) Japanese vs. Occidental dietary styles; and 2) the intake of meats vs. fishes. The changes of food intake patterns based on the principal component analysis were different in these two areas.
