Ryoko Katagiri

ORCID: 0000-0002-4867-2450
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About
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Research Areas
  • Cancer Risks and Factors
  • Nutritional Studies and Diet
  • Nutrition, Genetics, and Disease
  • Nutrition and Health in Aging
  • Liver Disease Diagnosis and Treatment
  • Folate and B Vitamins Research
  • Cancer, Lipids, and Metabolism
  • Iron Metabolism and Disorders
  • Thyroid Disorders and Treatments
  • Genetic Associations and Epidemiology
  • Sodium Intake and Health
  • Metabolomics and Mass Spectrometry Studies
  • Obesity, Physical Activity, Diet
  • Ovarian cancer diagnosis and treatment
  • Diet and metabolism studies
  • Alcohol Consumption and Health Effects
  • Nutrition, Health and Food Behavior
  • Hemoglobinopathies and Related Disorders
  • Thyroid Cancer Diagnosis and Treatment
  • Diet, Metabolism, and Disease
  • Vitamin D Research Studies
  • Health Literacy and Information Accessibility
  • Sleep and related disorders
  • Endometrial and Cervical Cancer Treatments
  • Data-Driven Disease Surveillance

Chiba University
2024-2025

National Institute of Biomedical Innovation, Health and Nutrition
2022-2024

National Cancer Centre Japan
2018-2024

National Institute of Infectious Diseases
2022-2024

National Cancer Center Hospital East
2024

National Cancer Center
2021-2022

National Center for Global Health and Medicine
2020-2021

Toyo University
2020

The University of Tokyo
2014-2019

Harvard University
2019

Although workers with poor sleep quality are reported to have problems work performance, few studies assessed the association between dietary factors and using validated indexes. Here, we examined this information acquired from questionnaires.A total of 3,129 female aged 34 65 years were analyzed. Dietary intake was a self-administered diet history questionnaire (DHQ), subjective Pittsburgh Sleep Quality Index (PSQI). The relationship several food groups nutrients multivariable logistic...

10.1539/joh.14-0051-oa article EN Journal of Occupational Health 2014-09-01

Despite evidence of an association between reproductive factors and endometrial cancer risk, prospective studies have been conducted mainly in non-Asian countries.To assess the factors, such as number deliveries, age at menarche, or menopause, risk.This cohort study used pooled individual data from 13 1963 2014 Asia Cohort Consortium. Participants were Asian women. Data analysis was September 2019 to April 2023.Reproductive assessed using a questionnaire each cohort.The main outcome time...

10.1001/jamanetworkopen.2023.32296 article EN cc-by-nc-nd JAMA Network Open 2023-09-05

Abstract Objective To investigate the association between several types of soy products and all cause specific mortality. Design Population based cohort study. Setting Japan Public Health Centre-based Prospective Study, which includes 11 public health centre areas in Japan. Participants 92 915 participants (42 750 men 50 165 women) aged 45 to 74 years. Exposures Intake total products, fermented (natto miso), non-fermented tofu from a five year survey questionnaire. Main outcome measures All...

10.1136/bmj.m34 article EN cc-by-nc BMJ 2020-01-29

Background: Seaweed has a high potential for nourishing the future planet. However, besides being beneficial, it also contains adverse components; this poses question whether consumption of seaweed foods overall contributes beneficially or detrimentally to human health, and hence if their should be promoted restricted. Methods: This study evaluated impact substituting regular with in diet, both terms nutritional quality (via iodine sodium) food safety arsenic, cadmium, lead, mercury). Food...

10.3389/fnut.2021.792923 article EN cc-by Frontiers in Nutrition 2022-01-06

Several epidemiologic studies have investigated the circulating levels of albumin, bilirubin, and uric acid (UA) in relation to cancer risk; however, they provided equivocal evidence. In this prospective case-cohort study, we measured plasma UA their association with incidence 3584 case patients 4270 randomly selected participants a median follow-up 15.8 years. The adjusted hazard ratios (HRs) 95% CIs total for highest quartile (Q4) versus lowest (Q1) was 0.77 (95% CI, 0.67-0.90; P <.001...

10.1093/aje/kwae092 article EN American Journal of Epidemiology 2024-05-29

Abstract Given the female predominance of thyroid cancer (TC), particularly in reproductive age range, sex hormones have been proposed as an aetiology; however, previous epidemiological studies shown conflicting results. We conducted a pooled analysis using individual data from 9 prospective cohorts Asia Cohort Consortium, to explore association between 10 and hormonal factors TC risk. Using Cox proportional hazards models, cohort-specific hazard ratios (HRs) 95% confidence intervals (CIs)...

10.1158/1940-6207.capr-24-0330 article EN Cancer Prevention Research 2025-01-23

&lt;p&gt;Supplementary Figure 7: Forest plot of stratified analyses between reproductive factors and thyroid cancer risk by body mass index (BMI) smoking status in the Asia Cohort Consortium. The Pooled Hazard Ratios (HRs) with 95% Confidence intervals (CIs) were generated combining cohort-specific HRs. Models for adjusted alcohol drinking BMI those status. a Significant (p-value &lt;0.05). b &lt;0.05) interaction indicating modifying effect on association factor risk. c model included all 9...

10.1158/1940-6207.28703940 preprint EN 2025-04-01

&lt;p&gt;Supplementary Figure 3: Forest plots of the pooled hazard ratios (HRs) and 95% confidence intervals (CIs) generated by combining cohort-specific HRs for association between reproductive factors overall risk thyroid cancer in Asia Cohort Consortium. A - plot CIs breastfeeding status risk, B postmenopausal C age at menopause overall&lt;/p&gt;

10.1158/1940-6207.28703955 preprint EN cc-by 2025-04-01

&lt;p&gt;Supplementary Figure 5: Forest plot of stratified analysis between number children/deliveries and thyroid cancer risk by birth years in the Asia Cohort Consortium. The Pooled Hazard Ratios (HRs) with 95% Confidence intervals (CIs) were generated combining cohort-specific HRs. Models adjusted for smoking status, alcohol drinking status Body mass index. a Significant (p-value &lt;0.05) trend across categories reproductive factor. b interaction indicating modifying effect on...

10.1158/1940-6207.28703949 preprint EN cc-by 2025-04-01

&lt;p&gt;Supplementary Figure 4: Forest plots of the pooled hazard ratios (HRs) and 95% confidence intervals (CIs) generated by combining cohort-specific HRs for association between reproductive factors overall risk thyroid cancer in Asia Cohort Consortium. A - plot CIs oral contraceptive use risk, B hormone replace therapy overall&lt;/p&gt;

10.1158/1940-6207.28703952 preprint EN cc-by 2025-04-01

&lt;p&gt;Supplementary Figure 1: Forest plots of the pooled hazard ratios (HRs) and 95% confidence intervals (CIs) generated by combining cohort-specific HRs for association between reproductive factors overall risk thyroid cancer in Asia Cohort Consortium. A - plot CIs age at menarche risk, B first delivery overall&lt;/p&gt;

10.1158/1940-6207.28703961 preprint EN cc-by 2025-04-01

&lt;p&gt;Supplementary Figure 2: Forest plots of the pooled hazard ratios (HRs) and 95% confidence intervals (CIs) generated by combining cohort-specific HRs for association between reproductive factors overall risk thyroid cancer in Asia Cohort Consortium. A - plot CIs parity status risk, B number children/deliveries C recategorized overall&lt;/p&gt;

10.1158/1940-6207.28703958 preprint EN cc-by 2025-04-01

&lt;div&gt;Abstract&lt;p&gt;Given the female predominance of thyroid cancer, particularly in reproductive age range, sex hormones have been proposed as an etiology; however, previous epidemiological studies shown conflicting results. We conducted a pooled analysis using individual data from nine prospective cohorts Asia Cohort Consortium to explore association between 10 and hormonal factors cancer risk. Using Cox proportional hazards models, cohort-specific hazard ratios (HR) 95% confidence...

10.1158/1940-6207.c.7747623 preprint EN 2025-04-01

&lt;p&gt;Supplementary Figure 6: Forest plot of pooled hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between reproductive factors thyroid cancer risk, by age diagnosis in Asia Cohort Consortium. The Pooled Hazard Ratios with Confidence were generated combining cohort-specific HRs. Models adjusted smoking status, alcohol drinking status Body mass index. a Significant (p-value &lt;0.05). b model included all 9 cohorts. c Breastfeeding 6 cohorts, that Oral...

10.1158/1940-6207.28703943 preprint EN 2025-04-01
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