• Mai Yamada, Kentaro Murakami, Satoshi Sasaki, Yoshiko Takahashi, and Hitomi Okubo.
• Department of International Health, The University of Tokyo, Tokyo, Japan.
• J Am Diet Assoc. 2008 Dec 1; 108 (12): 1997-2004.

BackgroundUnsweetened traditional Japanese tea has long been the main beverage consumed in Japan, with soft drinks only recently forming a part of people's diets. Evidence suggests an association between soft drink intake and poor diet quality among youth in the United States. The association is not yet fully examined in the population with relatively low intake level of soft drinks such as the current Japanese population.ObjectiveTo investigate the association of soft drink intake with dietary intake among young Japanese women.DesignA cross-sectional survey assessed dietary intake using a validated, self-administered, diet history questionnaire.Subjects/SettingFemale dietetics students aged 18 to 20 years (n=3,931) in April 2005 in Japan.Statistical AnalysesMultivariate linear regression analyses examined the relationship of soft drink intake with that of foods, beverages, energy, and nutrients.ResultsMean+/-standard deviation soft drink intake was 70.6+/-93.0 g/1,000 kcal. Soft drink intake was significantly associated positively with intake of confection, fat and oil, noodles, 100% vegetable and fruit juices, diet soft drinks, energy, and carbohydrates and negatively with intake of vegetables, fruits, pulses, fish and shellfish, rice, eggs, potatoes, milk, coffee and black tea, traditional Japanese tea, protein, dietary fiber, cholesterol, and most of the micronutrients examined.ConclusionsNot only among Western populations, but also among non-Western populations, soft drink intake may be an important factor to consider in evaluating overall dietary intake and diet quality.

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