Motoki Iwasaki
Biographic Data
| ID | 5460299 |
|---|---|
| NAME | Motoki Iwasaki |
| GIVEN NAMES | Motoki |
| FAMILY NAME | Iwasaki |
| SIGNATURE | IWASAKI M |
| AFFILIATIONS | Division of Epidemiology, National Cancer Center Institute for Cancer Control, Tokyo, Japan |
| ORCID | 0000-0003-3319-4131 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 11 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2006 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Mental disorders, cancers, and cardiovascular diseases mediate the associations of psychosocial factors with well-being and ikigai
While the role of psychosocial factors in well-being appears plausible, evidence is still limited in Asian populations, and the underlying mechanisms remain unclear. We applied the g-formula to JPHC-NEXT data to examine the longitudinal association of social support, social trust, and social network (assessed via marital status, contact with relatives, contacts with friends, and group associations) at baseline with well-being and ikigai (purpose …
Association between physical multimorbidity in middle adulthood and mortality
Physical multimorbidity in middle adulthood is associated with an increased risk of all-cause mortality in Japan
Association between the number of social roles and self-rated health
Background Health effects of multiple role occupancy and their mechanism are not fully addressed. We examined (1) the association between the number of social roles and self-rated health (SRH) and (2) the mediation effects of ikigai (the sense of life worth living) and the size of close social networks to the association. Methods We analysed the cross-sectional baseline questionnaire data of the Japan Public Health Center-based Prospective Study …
Dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast in Japanese adults
Objective: To assess dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast. Design: We analysed the cross-sectional data from a baseline survey of a large-scale population-based cohort study in Japan conducted in 2011–2016. Participants provided information on dietary behaviours and lifestyles through a self-administered questionnaire. Skipping breakfast was defined as not eating breakfast at least o…
Long-term exposure to fine particle matter and all-cause mortality and cause-specific mortality in Japan
We found evidence for a positive association between PM 2.5 exposure and mortality from cardiovascular disease in a Japanese population, even in an area with relatively low-level air pollution
Death by Suicide and Other Externally Caused Injuries After Stroke in Japan (1990–2010)
OBJECTIVE: No large population-based prospective study has investigated the risks of suicide and death by other externally caused injuries (ECIs) among stroke patients. The purpose of this study was to examine whether stroke increases the risks of suicide and ECI deaths. METHODS: We analyzed data from the Japan Public Health Center-based Prospective Study between 1990 and 2010. Poisson regression models were used to calculate adjusted risk ratios…
Validation of a quantitative FFQ for a study of diet and risk of colorectal adenoma among Japanese Brazilians
Objective To assess the validity of a 161-item quantitative FFQ (QFFQ) that was developed to evaluate dietary risk factors for a colorectal adenoma case–control study. Design A cross-sectional validation study of the QFFQ against 4 d food diary using Pearson correlation coefficients, cross-classification, weighted κ statistics and Bland–Altman plotting. Setting Two hospitals in São Paulo, Brazil. Subjects Ninety-seven healthy Japanese-Brazilian a…
Use of vitamin supplements and risk of total cancer and cardiovascular disease among the Japanese general population
To our knowledge, this is the first prospective cohort study to examine simultaneously the associations between vitamin supplement use patterns and risk of cancer and CVD. This prospective cohort study demonstrated that vitamin supplement use has little effect on the risk of cancer or CVD in men. In women, however, consistent vitamin supplement use might reduce the risk of CVD. Elevated risk of cancer associated with past and recent use of vitami…
P1-348 Leisure-time physical activity and breast cancer risk defined by oestrogen and progesterone receptor status
Objective To investigate the association between leisure-time physical activity (LPA) and breast cancer risk in consideration of tumour oestrogen/progesterone-receptor (ER/PR) status. Methods We conducted a population-based prospective cohort study among 53 578 women in the Japan Public Health Center-based Prospective Study. LPA was assessed by self-reported questionnaires. A Cox proportional hazards regression model was used to derive RRs and 95…
P1-446 Comparison of postmenopausal endogenous sex hormones among Japanese, Japanese Brazilians, and non-Japanese Brazilians
Introduction Previous studies have shown higher breast cancer incidence and mortality among Japanese Brazilians than Japanese. To clarify the difference in hormone levels among populations, we compared postmenopausal endogenous sex hormone levels among Japanese living in Japan, Japanese Brazilians living in São Paulo, and non-Japanese Brazilians living in São Paulo. Methods A cross-sectional study was conducted using a control group of case-contr…
Public awareness of risk factors for cancer among the Japanese general population
Our results suggest that awareness of the attributable fraction of cancer causes in the Japanese general population tends to be dominated by cancer-causing infection, occupational exposure, air pollution and food additives rather than major lifestyle factors such as diet
No prominent works on this page.
Public awareness of risk factors for cancer among the Japanese general population
Our results suggest that awareness of the attributable fraction of cancer causes in the Japanese general population tends to be dominated by cancer-causing infection, occupational exposure, air pollution and food additives rather than major lifestyle factors such as diet
Use of vitamin supplements and risk of total cancer and cardiovascular disease among the Japanese general population
To our knowledge, this is the first prospective cohort study to examine simultaneously the associations between vitamin supplement use patterns and risk of cancer and CVD. This prospective cohort study demonstrated that vitamin supplement use has little effect on the risk of cancer or CVD in men. In women, however, consistent vitamin supplement use might reduce the risk of CVD. Elevated risk of cancer associated with past and recent use of vitami…
P1-348 Leisure-time physical activity and breast cancer risk defined by oestrogen and progesterone receptor status
Objective To investigate the association between leisure-time physical activity (LPA) and breast cancer risk in consideration of tumour oestrogen/progesterone-receptor (ER/PR) status. Methods We conducted a population-based prospective cohort study among 53 578 women in the Japan Public Health Center-based Prospective Study. LPA was assessed by self-reported questionnaires. A Cox proportional hazards regression model was used to derive RRs and 95…
P1-446 Comparison of postmenopausal endogenous sex hormones among Japanese, Japanese Brazilians, and non-Japanese Brazilians
Introduction Previous studies have shown higher breast cancer incidence and mortality among Japanese Brazilians than Japanese. To clarify the difference in hormone levels among populations, we compared postmenopausal endogenous sex hormone levels among Japanese living in Japan, Japanese Brazilians living in São Paulo, and non-Japanese Brazilians living in São Paulo. Methods A cross-sectional study was conducted using a control group of case-contr…
Validation of a quantitative FFQ for a study of diet and risk of colorectal adenoma among Japanese Brazilians
Objective To assess the validity of a 161-item quantitative FFQ (QFFQ) that was developed to evaluate dietary risk factors for a colorectal adenoma case–control study. Design A cross-sectional validation study of the QFFQ against 4 d food diary using Pearson correlation coefficients, cross-classification, weighted κ statistics and Bland–Altman plotting. Setting Two hospitals in São Paulo, Brazil. Subjects Ninety-seven healthy Japanese-Brazilian a…
Death by Suicide and Other Externally Caused Injuries After Stroke in Japan (1990–2010)
OBJECTIVE: No large population-based prospective study has investigated the risks of suicide and death by other externally caused injuries (ECIs) among stroke patients. The purpose of this study was to examine whether stroke increases the risks of suicide and ECI deaths. METHODS: We analyzed data from the Japan Public Health Center-based Prospective Study between 1990 and 2010. Poisson regression models were used to calculate adjusted risk ratios…
Long-term exposure to fine particle matter and all-cause mortality and cause-specific mortality in Japan
We found evidence for a positive association between PM 2.5 exposure and mortality from cardiovascular disease in a Japanese population, even in an area with relatively low-level air pollution
Dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast in Japanese adults
Objective: To assess dietary behaviours and related lifestyles according to the presence or absence of skipping breakfast. Design: We analysed the cross-sectional data from a baseline survey of a large-scale population-based cohort study in Japan conducted in 2011–2016. Participants provided information on dietary behaviours and lifestyles through a self-administered questionnaire. Skipping breakfast was defined as not eating breakfast at least o…
Mental disorders, cancers, and cardiovascular diseases mediate the associations of psychosocial factors with well-being and ikigai
While the role of psychosocial factors in well-being appears plausible, evidence is still limited in Asian populations, and the underlying mechanisms remain unclear. We applied the g-formula to JPHC-NEXT data to examine the longitudinal association of social support, social trust, and social network (assessed via marital status, contact with relatives, contacts with friends, and group associations) at baseline with well-being and ikigai (purpose …
Association between physical multimorbidity in middle adulthood and mortality
Physical multimorbidity in middle adulthood is associated with an increased risk of all-cause mortality in Japan
Association between the number of social roles and self-rated health
Background Health effects of multiple role occupancy and their mechanism are not fully addressed. We examined (1) the association between the number of social roles and self-rated health (SRH) and (2) the mediation effects of ikigai (the sense of life worth living) and the size of close social networks to the association. Methods We analysed the cross-sectional baseline questionnaire data of the Japan Public Health Center-based Prospective Study …
Medicine (10 works) · Internal Medicine (8 works) · Demography (7 works) · Cohort (6 works) · Cohort study (6 works) · Environmental health (6 works) · Confidence interval (5 works) · Population (5 works) · Biostatistics (4 works) · Demography (4 works)