This study, we estimates the energy and nutrient intakes of Japanese households using order-made aggregate data from the 1981－2015 Family Income and Expenditure Survey. We demonstrate that, although there is a discrepancy in the level of nutrient intake between our estimate and the National Health and Nutrition Survey, the two estimates are consistent in terms of nutritional indicators defined as the ratio of nutrient intakes. We find that (1) the share of energy intake from fat has significantly increased since the 1980s, whereas that from protein has increased only slightly and (2) there is a “nutrition gap” in which households with higher economic status exhibit better nutritional conditions in many indicators, whereas there is also a “reverse” nutrition gap in some indicators.
