What constitutes healthiness of Washoku or Japanese diet?

Abstract Background Traditional Japanese diets are considered to be health and longevity. We created a Traditional Japanese Diet Score (TJDS) and investigated the relationship between the TJDS and healthy life expectancy (HALE) longitudinally using global database. Methods Average food (g/day/capita) and energy supply (kcal/day/capita) by countries were identified by the Food and Agriculture Organization of the United Nations Statistics Division database. The sum of characterizing traditional Japanese foods supply (beneficial food components in Japanese diet; rice, fish, soybeans, vegetables, eggs, seaweeds, food components not use so much in Japanese diet; wheat, milk, and red meat) were divided as tertile (beneficial food components;-1, 0, 1, not use so much food components; 1, 0, -1). HALE values by country were derived from the Global Burden of Disease 2017 database. The longitudinal effects of TJDS on the rate of change in HALE from 1990 to 2013 were evaluated using a generalized mixed-effect model (GLMM), which takes into account the dependence of repeated observations within countries. The interaction between TJDS and survey year was applied to access the effects on HALE. This study covered 137 countries with populations of 1 million or greater. Results Longitudinal analysis controlled for covariates showed that smooth term of the interaction between TJDS and survey year was significant (p < 0.001). The TJDS was negative associated with HALE in 1990, and in 1991, but positive associated after 2002. Conclusions The relationship between the TJDS as a healthy eating style and HALE is getting stronger since the 21st century. Key messages Well-balanced eating habits of traditional Japanese diets is supports healthy life expectancy.

Download Full-text

A Very-Low-Calorie Conventional Japanese Diet: Its Implications for Prevention of Obesity

Obesity Research ◽

10.1002/j.1550-8528.1995.tb00469.x ◽

1995 ◽

Vol 3 (S2) ◽

pp. 233s-239s ◽

Cited By ~ 24

Author(s):

Toshiie Sakata

Keyword(s):

Low Calorie ◽

Japanese Diet

Download Full-text

The Japanese Diet: Parliamentary Groups and Lawmaking

The Oxford Handbook of Japanese Politics ◽

10.1093/oxfordhb/9780190050993.013.50 ◽

2021 ◽

Author(s):

Mikitaka Masuyama

Keyword(s):

Electoral Systems ◽

Representative Democracy ◽

Whole Process ◽

The Government ◽

Legislative Activities ◽

Party Dominance ◽

And Diffusion ◽

Ruling Party ◽

Democracy Functions ◽

Japanese Diet

By exploring specific incidents and parliamentary practices and reviewing how parliament operates across a typical year, this chapter highlights the significance of the negotiation between parliamentary groups, explaining how the Diet rules and procedures strongly influence parliamentary behavior. Representative democracy functions through the interconnection of the legislative and electoral systems, affecting the fusion and diffusion of powers. The constitutional fusion of power underlies the whole process of lawmaking in the Diet. However, one-party dominance makes the government and opposition relations permanently asymmetrical. Unless elections allow voters to choose a government, the majoritarian control to make the ruling party accountable will not work, and legislative activities will remain mismatched with electoral competitions.

Download Full-text

Relationship between the Japanese-style diet, gut microbiota, and dementia: a cross-sectional study

10.21203/rs.3.rs-255821/v1 ◽

2021 ◽

Author(s):

Naoki Saji ◽

Tsuyoshi Tsuduki ◽

Kenta Murotani ◽

Takayoshi Hisada ◽

Taiki Sugimoto ◽

...

Keyword(s):

Cognitive Function ◽

Gut Microbiota ◽

Cognitive Decline ◽

Gut Microbiome ◽

Cross Sectional Study ◽

Dietary Composition ◽

Microbial Metabolites ◽

Cross Sectional ◽

Fish And Shellfish ◽

Japanese Diet

Abstract Background Previous studies have shown associations between the gut microbiota, microbial metabolites, and cognitive decline. However, the effect of the dietary composition on such associations has not been fully investigated. Methods We performed a cross-sectional sub-analysis of data from our prospective hospital-based cohort study (the Gimlet study) to evaluate the relationships between dietary composition, cognitive decline, and the gut microbiota. All the participants of the Gimlet study had been provided with information regarding this sub-study in 2018. Patients were excluded if they were unable to provide sufficient data in the questionnaire regarding their dietary composition. We assessed their demographics, dietary composition, risk factors, cognitive function, results of brain imaging, gut microbiome, and microbial metabolites. On the basis of previous studies, a nine-component traditional Japanese diet index (JDI9), a 12-component modern JDI (JDI12), and a 12-component revised JDI (rJDI12), were defined. Higher JDI scores indicated greater conformity to the traditional Japanese diet. We then evaluated the relationships between the JDI scores, cognitive function, and the gut microbiome and microbial metabolites using multivariable logistic regression analyses. Results We analyzed data from 85 eligible patients (61% women; mean age: 74.6 ± 7.4 years; mean Mini-Mental State Examination score: 24 ± 5). Compared with participants with dementia, those without dementia were more likely to consume foods in the JDI12, including fish and shellfish (64.5% vs. 39.1%, P = 0.048), mushrooms (61.3% vs. 30.4%, P = 0.015), soybeans and soybean-derived foods (62.9% vs. 30.4%, P = 0.013), and coffee (71.0% vs. 43.5%, P = 0.024). There were non-significant trends towards lower fecal concentrations of gut microbial metabolites in participants with a more traditional Japanese diet. Participants with dementia had lower JDI9, JDI12, and rJDI12 scores than participants without dementia (dementia vs. non-dementia, median JDI9 score: 5 vs. 7, P = 0.049; JDI12: 7 vs. 8, P = 0.017; and rJDI12: 7 vs. 9, P = 0.006, respectively). Conclusions Adherence to a traditional Japanese diet was found to be inversely associated with cognitive decline and tended to be associated with lower concentrations of gut microbial metabolites. Trial registration: UMIN000031851.

Download Full-text