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In the early 1980s the Japanese scientific academy defined a functional food as a food having a tertiary or physiologically active function. The current Japanese "Food with Health Claims" include 2 categories. For the first category, "Food with Nutrient Function Claims," the label may be freely used if a product satisfies the standard for the minimum and maximum levels per daily portion usually consumed. The second category is defined as "Food for Specified Health Uses" (FOSHU). FOSHU foods are those that contain dietary ingredients that have beneficial effects on the physiological functions of the human body, maintain and promote health, and improve health-related conditions. Health claims on these foods correspond to the category of "other" function claims of the Codex Alimentarius. However, claims of disease-risk reduction are not currently allowed under FOSHU with an exception for calcium and folic acid. Manufacturers can emphasize the characteristics of their products and promote sales by labeling or claims. Therefore, the labeling should be clear and correct and avoid any chance of misinterpretation. The labeling of health claims on foods should always be based on scientific evidence. Any manufacturer who applies to the government for approval under the FOSHU code for its product must tabulate both published available publications and internal reports on the effectiveness of the product and/or its ingredients and provide a summary of each available publication or report. The tabulation must include in vitro metabolic and biochemical studies, in vivo studies, and randomized controlled trials on Japanese people. The overall philosophy of the Ministry is to maintain and improve the health status of people and to prevent chronic noncommunicable diseases through an approach that involves a well-balanced diet as well as through the use of "health foods" including "Food with Health Claims."

We analyzed the association between dietary intake and chronotype as assessed by both Morningness-Eveningness Questionnaire (MEQ) score and preferred midpoint of sleep in 112 young Japanese women. Dietary intake was assessed by a brief, self-administered diet history questionnaire. A lower MEQ score (evening-type tendency) showed a significant association with a lower energy-adjusted intake of protein, calcium, magnesium, zinc, vitamins (D, riboflavin, and B(6)), and vegetables, and with a higher intake of noodles. Furthermore, a later midpoint of sleep showed a significant association with a lower energy-adjusted intake of protein, cholesterol, potassium, calcium, magnesium, zinc, vitamins (D, riboflavin, B(6), and B(12)), soy, fish and shellfish, and eggs, and with a higher intake of noodles, bread, and confections. These data suggest that evening chronotype is associated with inadequate dietary habits such as low vitamin and mineral intakes.

articles integrative PhysiologyMethods and Procedures Mice C57BL/6J mice (4 weeks old; males: n = 24, females: n = 32) used in this study were purchased from Sankyo Laboratories (Tokyo, Japan). They were allowed free access to water and food, and were kept in a light-, temperature-, and humidity-controlled environment throughout the experiment (12-12 h light-dark cycle; temperature 23 ± 1 °C; 55 ± 5% relative humidity).This study was approved by the Institutional Animal Care and Use Committee at Japan Women's University, and the animals were maintained in accordance with the Guide for the Care and Use of Laboratory Animals guideline of the General Administrative Agency of the Japanese Cabinet. dietThe animals were fed two types of diet throughout the study. They were fed either the control diet (AIN-93G: American Institute of Nutrition 93G), or an HF diet (AIN-93G supplemented with lard), which consisted of 29% lard ad libitum as shown in Table 1.

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Long-term feeding of high-fat diet and high-fat plus high-sucrose diet similarly induced severe obesity in C57BL/6J mice. Not only T-cell, but also B-cell function may be impaired in mice made severely obese by the high-fat or high-fat plus high-sucrose diets.

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This study suggests that the obesity-induced reduction of HSP70 expression in the brain and kidney can be directly or indirectly associated with disturbance of rhythms of the master clock and peripheral clocks. The study provides a link between circadian rhythm and HSP expression in obesity; the disturbance of these factors may lead to the progression of metabolic disorders.