Kentaro Murakami
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View article: Examining a probabilistic acute dietary exposure model to assess the risk of pesticide residues using nationwide food consumption data and multi-year national pesticide residue monitoring results from Japan
Examining a probabilistic acute dietary exposure model to assess the risk of pesticide residues using nationwide food consumption data and multi-year national pesticide residue monitoring results from Japan Open
Regulatory bodies increasingly advocate probabilistic estimation of dietary exposure to better characterise variability and uncertainty. In response, we piloted a custom program tailored for Japan's regulatory context, using boscalid as a …
View article: Relative validity of food and nutrient intakes derived from a brief-type diet history questionnaire for Japanese children and adolescents
Relative validity of food and nutrient intakes derived from a brief-type diet history questionnaire for Japanese children and adolescents Open
The aim of this study was to evaluate the relative validity of food and nutrient intakes estimated by a brief-type diet history questionnaire for Japanese children and adolescents (BDHQ15y) designed to assess habitual dietary intake during…
View article: Sparse identification of nonlinear dynamics with library optimization mechanism: Recursive long-term prediction perspective
Sparse identification of nonlinear dynamics with library optimization mechanism: Recursive long-term prediction perspective Open
The sparse identification of nonlinear dynamics (SINDy) approach can discover the governing equations of dynamical systems based on measurement data, where the dynamical model is identified as the sparse linear combination of the given bas…
View article: Is the hand scale an appropriate tool for guiding and estimating food portions? An evaluation among free-living adults
Is the hand scale an appropriate tool for guiding and estimating food portions? An evaluation among free-living adults Open
The hand scale, which uses the number of hands (e.g., fists and palms) to estimate portion size, is widely used in practice. However, evidence regarding its appropriateness in free-living settings is limited. This study aimed to examine th…
View article: Ecological momentary assessment of meal context and food types contributing to salt intake at meals
Ecological momentary assessment of meal context and food types contributing to salt intake at meals Open
Background Salt (sodium) intake can vary across meals depending on the meal context and food types, including what and how much was consumed and where, when, and with whom it was consumed. However, their dynamic associations remain unclear…
View article: Chrononutrition behaviors in relation to diet quality and obesity: do dietary assessment methods and energy intake misreporting matter?
Chrononutrition behaviors in relation to diet quality and obesity: do dietary assessment methods and energy intake misreporting matter? Open
View article: Relative validity of the Chrono-Nutrition Behavior Questionnaire (CNBQ) against 11-day event-based ecological momentary assessment diaries of eating
Relative validity of the Chrono-Nutrition Behavior Questionnaire (CNBQ) against 11-day event-based ecological momentary assessment diaries of eating Open
View article: Food literacy and eating motivation in relation to diet quality and general and abdominal obesity: A cross-sectional study
Food literacy and eating motivation in relation to diet quality and general and abdominal obesity: A cross-sectional study Open
This cross-sectional study aimed to investigate the associations of food literacy and eating motivation with diet quality and obesity. Participants were 1055 Japanese adults aged 20-69 years. The self-perceived food literacy scale was used…
View article: Description of Weight-Related Content and Recommended Dietary Behaviors for Weight Loss Frequently Reposted on X (Twitter) in English and Japanese: Content Analysis
Description of Weight-Related Content and Recommended Dietary Behaviors for Weight Loss Frequently Reposted on X (Twitter) in English and Japanese: Content Analysis Open
Background Both obesity and underweight are matters of global concern. Weight-related content frequently shared on social media can reflect public recognition and affect users’ behaviors and perceptions. Although X (Twitter) is a popular s…
View article: Associations between diet quality scores and cardiometabolic status in young Japanese women: A cross-sectional study.
Associations between diet quality scores and cardiometabolic status in young Japanese women: A cross-sectional study. Open
This cross-sectional study of young Japanese women showed associations between several diet quality scores and cardiometabolic status. These associations should be confirmed in other populations, prospectively where possible.
View article: Identification of meal patterns based on energy intake distribution across the day and their associations with diet quality and body mass index
Identification of meal patterns based on energy intake distribution across the day and their associations with diet quality and body mass index Open
These findings suggest that improving the quality of the meal with the highest energy contribution could help enhance overall dietary quality and metabolism.
View article: Relative validity of three diet quality scores derived from the Brief-type Self-administered Diet History Questionnaire and Meal-based Diet History Questionnaire in Japanese adults
Relative validity of three diet quality scores derived from the Brief-type Self-administered Diet History Questionnaire and Meal-based Diet History Questionnaire in Japanese adults Open
No study has validated questionnaires for assessing easily calculable diet quality scores in Japan. The Brief-type self-administered Diet History Questionnaire (BDHQ) is widely used to assess dietary intake in Japan, while the Meal-based D…
View article: Contribution of fortified foods and dietary supplements to total nutrient intakes and their adequacy in Japanese adults
Contribution of fortified foods and dietary supplements to total nutrient intakes and their adequacy in Japanese adults Open
View article: Recommended Dietary Behaviors for Weight Loss Frequently Reposted on X (Twitter) in English and Japanese
Recommended Dietary Behaviors for Weight Loss Frequently Reposted on X (Twitter) in English and Japanese Open
View article: Nutrients and Foods Recommended for Blood Pressure Control on Twitter in Japan: Content Analysis
Nutrients and Foods Recommended for Blood Pressure Control on Twitter in Japan: Content Analysis Open
Background Management and prevention of hypertension are important public health issues. Healthy dietary habits are one of the modifiable factors. As Twitter (subsequently rebranded X) is a digital platform that can influence public eating…
View article: Highly Processed Food Consumption and its Association With Overall Diet Quality in a Nationwide Sample of 1,318 Japanese Children and Adolescents: A Cross-Sectional Analysis Based on 8-Day Weighed Dietary Records
Highly Processed Food Consumption and its Association With Overall Diet Quality in a Nationwide Sample of 1,318 Japanese Children and Adolescents: A Cross-Sectional Analysis Based on 8-Day Weighed Dietary Records Open
HPFs accounted for more than one-quarter of the energy intake of Japanese children and adolescents surveyed, and higher consumption of HPFs was associated with lower diet quality. Therefore, reducing HPF consumption may increase overall di…
View article: Relationship between Household Shared Meal Frequency and Dietary Intake among Men and Women Aged ≥20 Years: Cross-Sectional Analyses Based on 2018 and 2019 National Health and Nutrition Surveys in Japan
Relationship between Household Shared Meal Frequency and Dietary Intake among Men and Women Aged ≥20 Years: Cross-Sectional Analyses Based on 2018 and 2019 National Health and Nutrition Surveys in Japan Open
This study aimed to examine the relationship between the frequency of household shared meals and the intake of 17 food groups and 21 nutrients. Participants were 3310 men and 3386 women ≥20 years old living in a household of ≥2 members fro…
View article: Misinformation surrounding sodium reduction for blood pressure: content analysis of Japanese posts on X
Misinformation surrounding sodium reduction for blood pressure: content analysis of Japanese posts on X Open
This content analysis aimed to assess misinformation themes regarding sodium reduction and blood pressure on X with the goal of providing strategies to address and debunk such misinformation. A total of 531 posts were manually coded into s…
View article: Association between meal context and meal quality: an ecological momentary assessment in Japanese adults
Association between meal context and meal quality: an ecological momentary assessment in Japanese adults Open
View article: Self-perceived food literacy in relation to the quality of overall diet and main meals: A cross-sectional study in Japanese adults
Self-perceived food literacy in relation to the quality of overall diet and main meals: A cross-sectional study in Japanese adults Open
View article: A scoping review of dietary assessment questionnaires potentially suitable for assessing habitual dietary intake in the National Health and Nutrition Survey, Japan
A scoping review of dietary assessment questionnaires potentially suitable for assessing habitual dietary intake in the National Health and Nutrition Survey, Japan Open
This scoping review aimed to identify questionnaire-based dietary assessment methods for use in the National Health and Nutrition Survey (NHNS) in Japan. The search was conducted in three databases (PubMed, Web of Science, and Ichushi ) to…
View article: Prevalence and Correlates of Dietary and Nutrition Information Seeking Through Various Web-Based and Offline Media Sources Among Japanese Adults: Web-Based Cross-Sectional Study
Prevalence and Correlates of Dietary and Nutrition Information Seeking Through Various Web-Based and Offline Media Sources Among Japanese Adults: Web-Based Cross-Sectional Study Open
Background The advent of the internet has changed the landscape of available nutrition information. However, little is known about people’s information-seeking behavior toward healthy eating and its potential consequences. Objective We aim…
View article: Usual Nutrient Intake Distribution and Prevalence of Nutrient Intake Inadequacy among Japanese Children and Adults: A Nationwide Study Based on 8-Day Dietary Records
Usual Nutrient Intake Distribution and Prevalence of Nutrient Intake Inadequacy among Japanese Children and Adults: A Nationwide Study Based on 8-Day Dietary Records Open
In this cross-sectional study, we evaluated nutrient intake adequacy in 4450 Japanese people aged 1–79 years. Dietary data was collected through non-consecutive 8-day weighed dietary records. Usual nutrient intakes from foods and beverages…
View article: The association of highly processed food consumption with food choice values and food literacy in Japanese adults: a nationwide cross-sectional study
The association of highly processed food consumption with food choice values and food literacy in Japanese adults: a nationwide cross-sectional study Open
Background Highly processed food (HPF) consumption is increasing globally and has become a prominent public health concern. However, the relationship between HPF consumption and food choice values and food literacy is unknown. This study a…
View article: Prevalence and Correlates of Dietary and Nutrition Information Seeking Through Various Web-Based and Offline Media Sources Among Japanese Adults: Web-Based Cross-Sectional Study (Preprint)
Prevalence and Correlates of Dietary and Nutrition Information Seeking Through Various Web-Based and Offline Media Sources Among Japanese Adults: Web-Based Cross-Sectional Study (Preprint) Open
BACKGROUND The advent of the internet has changed the landscape of available nutrition information. However, little is known about people’s information-seeking behavior toward healthy eating and its potential consequences. OBJECTIVE We …
View article: Web-Based Content on Diet and Nutrition Written in Japanese: Infodemiology Study Based on Google Trends and Google Search
Web-Based Content on Diet and Nutrition Written in Japanese: Infodemiology Study Based on Google Trends and Google Search Open
Background The increased availability of content of uncertain integrity obtained through the internet is a major concern. To date, however, there has been no comprehensive scrutiny of the fitness-for-purpose of web-based content on diet an…
View article: Are popular books about diet and health written based on scientific evidence? A comparison of citations between the USA and Japan
Are popular books about diet and health written based on scientific evidence? A comparison of citations between the USA and Japan Open
Objectives: To describe and compare the references cited in popular books about diet and health between the USA and Japan. Design: Books were selected based on their best-seller rankings in the diet and health category of online bookstores…
View article: National Nutrition Surveys Applying Dietary Records or 24-h Dietary Recalls with Questionnaires: A Scoping Review
National Nutrition Surveys Applying Dietary Records or 24-h Dietary Recalls with Questionnaires: A Scoping Review Open
Development of an accurate and efficient dietary method is required for national nutrition surveys. Some countries conduct dietary surveys and combine 24-h dietary records or 24-h dietary recalls with dietary questionnaires. This scoping r…
View article: Cross-Sectional Association between Estimated Hardness of the Habitual Diet and Depressive Symptoms in Older Japanese Men
Cross-Sectional Association between Estimated Hardness of the Habitual Diet and Depressive Symptoms in Older Japanese Men Open
This cross-sectional study aimed to investigate the association between dietary hardness and depressive symptoms in older Japanese men. Participants were 1487 men aged 60–69 years enrolled in the baseline survey of the Hitachi Health Study…
View article: P14-067-23 Associations of Diet Quality Scores With Cardiometabolic Risk Factors in Young Japanese Women: A Cross-Sectional Study
P14-067-23 Associations of Diet Quality Scores With Cardiometabolic Risk Factors in Young Japanese Women: A Cross-Sectional Study Open