School of Nutrition and Dietetics, Faculty of Health and Social Services, Kanagawa University of Human Services, 1-10-1, Heisei-cho, Yokosuka 238-8522, Japan.
Nutrients. 2024 Jul 26;16(15):2431. doi: 10.3390/nu16152431.
Previous studies have shown that Japanese dietary patterns are associated with high nutrient density. However, these studies were limited to the Japanese population. We examined this association in the US population.
A cross-sectional analysis was conducted using data from the National Health and Nutrition Examination Survey (NHANES) 2017-2018. We included 3138 people aged 20-79 years. Food and nutrient intake data were based on the 24 h recall method. Three Japanese diet indices were used: (1) Japanese Diet Index (JDI, based on 9 food items), (2) modified JDI (mJDI, based on 12 food items), and (3) weighted JDI (wJDI, selected and weighted from mJDI food items). The nutrient density (ND) score was calculated based on the Nutrient-Rich Food Index 9.3. Spearman's rank correlation coefficients were calculated.
The correlation coefficients with the ND score were 0.24 ( < 0.001) for the JDI and 0.38 ( < 0.001) for the mJDI. The correlation coefficient between the wJDI and ND score was 0.48 ( < 0.001). The three Japanese diet indices were correlated with the ND score in all racial groups ( < 0.001).
Even among the US population, higher degrees of Japanese diet defined by the JDI or mJDI were associated with higher nutrient density.
先前的研究表明，日本的饮食模式与高营养密度有关。然而，这些研究仅限于日本人群。我们在美国人群中检验了这种关联。
使用 2017-2018 年全国健康和营养调查（NHANES）的数据进行了横断面分析。我们纳入了 3138 名年龄在 20-79 岁的人群。食物和营养素摄入量数据基于 24 小时回顾法。使用了三种日本饮食指数：（1）日本饮食指数（JDI，基于 9 种食物），（2）改良 JDI（mJDI，基于 12 种食物），和（3）加权 JDI（wJDI，从 mJDI 食物中选择和加权）。根据营养丰富食物指数 9.3 计算营养素密度（ND）评分。计算了 Spearman 等级相关系数。
JDI 与 ND 评分的相关系数为 0.24（<0.001），mJDI 与 ND 评分的相关系数为 0.38（<0.001）。wJDI 与 ND 评分的相关系数为 0.48（<0.001）。三种日本饮食指数与 ND 评分在所有种族群体中均相关（<0.001）。
即使在美国人群中，JDI 或 mJDI 定义的较高程度的日本饮食与较高的营养密度相关。
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