A research group led by Specially Appointed Assistant Professor Nana Shinozaki of the University of Tokyo Graduate School conducted a nationwide dietary record survey and revealed the percentage of people who habitually intake insufficient or excessive amounts of 28 types of nutrients. .
Evaluation of nutrient intake is important for dietary improvement, and it is necessary to use the individual's habitual intake based on a multi-day dietary survey. The Japanese National Health and Nutrition Survey only provides one-day household-level dietary data, and other small-scale studies have been limited to target population characteristics, place of residence, and season, and have been limited to the dietary habits of Japanese people. The amount ingested was largely unknown.
Therefore, this time, we calculated the habitual nutrient intake of Japanese people and evaluated the appropriateness of intake. A survey of 32 Japanese people between the ages of 1 and 79 in 4450 prefectures was conducted by weighing food records over a total of 2 days, 8 days in each season. Furthermore, we statistically calculated individuals' habitual intake of 28 types of nutrients, and investigated the percentage of people who had insufficient or excessive intake.
As a result, a certain percentage of people had habitual intakes that were lower than the estimated average requirements for most nutrients. In particular, the proportion of people with calcium intake below the estimated average requirement was high in all genders and age groups (29-88%), and the proportion of women with iron intake below the estimated average requirement was high (12-64%). The proportion was high (79-95%).
Additionally, a certain percentage of people had habitual intakes of protein, dietary fiber, and potassium that were below the lower limit of the target amount. Additionally, over 20% of all genders and age groups had total fat and saturated fatty acid intakes that exceeded the target upper limit, and over 88% had sodium (salt) intakes that exceeded the target upper limit.
This is the world's first calculation and evaluation of habitual nutrient intake in a large Japanese population. In the future, the study will become an important resource for public nutrition policy decisions aimed at improving nutrient intake in Japan.
