Publications by authors named "Akiko Tamakoshi"
Background: There are scarce data on risk factors for epithelial ovarian cancer (EOC) in Asian populations. Our goal was to advance knowledge on reproductive -related risk factors for EOC in a large population of Asian women.
Methods: This study used pooled individual data from baseline questionnaires in 11 prospective cohorts (baseline years, 1958-2015) in the Asia Cohort Consortium.
Article Synopsis
- A study followed 40,272 men and 54,902 women in Japan for 19.3 years to investigate how sleep duration affects death from chronic kidney disease.
- Participants were grouped based on sleep duration (less than 6 hours to more than 9 hours) and analyzed using Cox proportional hazard models.
- Results indicated that sleeping 8-9 hours or more than 9 hours per day significantly increased the risk of chronic kidney disease mortality, particularly in individuals under 65 years old.
Background: It has been suggested that the association between body mass index and breast cancer risk differs between Asian women and Western women. We aimed to assess the associations between body mass index and breast cancer incidence in East Asian women.
Methods: Pooled analyses were performed using individual participant data of 319,189 women from 13 cohort studies in Japan, Korea, and China.
Background: Planetary and human health are highly intertwined; our current food system is associated with high greenhouse gas emissions (GHGE) and burden of disease.
Objective: The aim of this study was to investigate the associations of diet-related GHGE with all-cause and cause-specific mortality in Japan.
Methods: This study included 58,031 Japanese adults (35,078 women and 22,953 men) 40-79 y of age who participated in the Japan Collaborative Cohort Study during the period 1988-1990.
Aims: Few studies have investigated the impact of sleep duration at night and daytime napping on mortality from aortic disease. In this study, we examined the associations of sleep duration at night with daytime napping and mortality from aortic disease.
Methods: We followed 67,269 participants (26,826 men and 40,443 women, aged 40-79 years) who were not night shift workers and had no history of stroke, heart disease, or cancer.
Article Synopsis
- * Researchers found that the average age girls start their periods is about 14 years, but it has been getting younger over the past 100 years.
- * Different countries showed different trends, with some like China having ups and downs, while others like Japan and Singapore had a steady decline in the average age.
Article Synopsis
- A study examined the impact of family history of lung cancer (FHLC) on lung cancer incidence and mortality among East Asian individuals, using data from 478,354 participants across 11 cohorts.
- The findings indicated that having a family history of lung cancer increased the risk of developing lung cancer by 45%, affecting both men and women, and regardless of whether individuals were smokers or non-smokers.
- Specific lung cancer types like adenocarcinoma and squamous cell carcinoma showed even higher associated risks, but there was no significant difference in risk based on sex, smoking status, or ethnicity.
Article Synopsis
- The study explored the impact of cardiovascular and lifestyle risk factors on mortality from chronic kidney disease in the Japanese population over an 18.8-year period.
- It included a large sample of nearly 106,000 adults aged 40-79, analyzing data using Cox proportional hazard models.
- Key findings indicated that high body mass index, hypertension, diabetes, smoking, and low exercise were linked to increased mortality risk, while moderate drinking and regular exercise were associated with lower risk.
Background: Although water is essential for maintaining health and life, the association between water turnover as an indicator of daily water requirement and water deficit and mortality is unclear.
Objectives: We aimed to investigate this association in Japanese adults.
Methods: A total of 63,488 (36,739 females and 26,749 males) Japanese aged 40-79 y in the Japan Collaborative Cohort Study in 1988-1990 were followed up their mortality through 2009.
Purpose: The relationship between screen time (ST) and obesity has been demonstrated; however, few studies have differentiated between work-related and leisure-based use in Japanese adults, including older adults. This study aimed to examine the relationship between both work-related and leisure-based ST and obesity in adults.
Methods: This cross-sectional study was based on a questionnaire survey conducted in 2018.
Article Synopsis
- The study explored how the surface charge of low-density lipoprotein (LDL) relates to LDL cholesterol levels and atherosclerosis in a Japanese community.
- It involved 409 residents aged 35-79 and measured the electric charges of LDL using advanced technology, examining correlations with various health indicators.
- Results showed that a more negative surface charge of LDL was linked to lower serum LDL-cholesterol levels, although no significant connections were found with atherosclerosis measures like the cardio-ankle vascular index (CAVI) or C-reactive protein levels.
Background: Evidence suggests a possible link between diabetes and gastric cancer risk, but the findings remain inconclusive, with limited studies in the Asian population. We aimed to assess the impact of diabetes and diabetes duration on the development of gastric cancer overall, by anatomical and histological subtypes.
Methods: A pooled analysis was conducted using 12 prospective studies included in the Asia Cohort Consortium.
Article Synopsis
- Researchers aimed to create a simple dietary risk score for cardiovascular disease (CVD) prevention tailored for the Japanese population, addressing the complexity of existing indicators.
- The study involved 58,672 participants and used a food frequency questionnaire to develop the concise healthy diet score (cHDS), which ranges from 0 to 5 points, to analyze its impact on mortality rates over a median follow-up of 19.2 years.
- Results showed that higher cHDS scores (indicating a healthier diet) were linked to lower mortality rates from CVD and all causes in both men and women, highlighting its potential effectiveness in promoting health.
Background: Disasters such as earthquakes, terrorism, and pandemics have triggered post-traumatic stress disorder (PTSD), and discrimination against the affected individuals has been linked to the development of PTSD. However, there is limited evidence regarding the association between discrimination against coronavirus disease 2019 (COVID-19) patients and probable PTSD in Japan.
Methods: We conducted a cross-sectional study utilizing a web-based questionnaire targeting individuals who had contracted the severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) infection in Sapporo City.
Article Synopsis
- A study was conducted using data from 968,738 adults across 20 cohort studies in Asia to investigate the link between diabetes and liver cancer incidence and mortality.
- The findings revealed that adults with diabetes had a significantly higher risk of being diagnosed with liver cancer (hazard ratio of 1.97) and dying from it (adjusted hazard ratio of 1.97) compared to those without diabetes.
- The robust results, supported by a two-stage meta-analysis, contribute valuable evidence to the understanding of liver cancer risks among diabetic populations in Asian countries.
Background: Epidemiological studies have shown inconsistent results regarding the link between smoking and breast cancer risk, despite the biological plausibility of a positive association.
Methods: Participants were 166 611 women from nine prospective cohort studies in Japan which launched in 1984-1994 and followed for 8-22 years. Information on smoking and secondhand smoke was obtained through self-administered baseline questionnaires.
This study aimed to determine the relationship between specific information source usage and uptake of the coronavirus disease 2019 (COVID-19) vaccine. We analyzed 3348 participants aged 20 to 65 years who were not diagnosed with COVID-19 in a case-control study in Sapporo, Japan. The most prevalent information source on COVID-19 was television (TV; 87.
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- The study aimed to investigate the effect of supper timing on cardiovascular disease (CVD) risk among both hypertensive and non-hypertensive individuals in a large cohort over a long period.
- The analysis included 72,658 participants aged 40-79 years, and results showed that irregular supper times increased CVD mortality risk, particularly among hypertensives aged 65 and older.
- The findings suggest that the timing of supper could serve as an important indicator for assessing CVD risk.
Background: Gastric cancer is a major cause of morbidity and mortality in Japan and worldwide. Emerging literature has suggested unfavorable health outcomes associated with daytime napping. Herein, we aimed to investigate the association between daytime napping and the risk of gastric cancer among Japanese people.
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- In 2022, Wenning et al. introduced the Movement Disorder Society Criteria for diagnosing Multiple System Atrophy (MSA) to improve diagnosis compared to previous methods.
- A study involved 68 patients registered with the Hokkaido Rare Disease Consortium, analyzing their conditions at three different times: initial evaluation, diagnosis, and final evaluation.
- Results showed an increase in the percentage of patients classified as clinically established MSA from 39.7% initially to 76.5% at the final evaluation, indicating clearer diagnostic criteria over time.
The female predominance of gallbladder cancer (GBC) has led to a hypothesis regarding the hormone-related aetiology of GBC. We aimed to investigate the association between female reproductive factors and GBC risk, considering birth cohorts of Asian women. We conducted a pooled analysis of 331,323 women from 12 cohorts across 4 countries (China, Japan, Korea, and Singapore) in the Asia Cohort Consortium.
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- - The study analyzed lung cancer risk related to reproductive factors among 308,949 Asian women across four countries, finding inconsistent results in previous research.
- - Parous women (those who have given birth) were found to have a significantly lower risk of lung cancer incidence and mortality compared to nulliparous women, especially among smokers.
- - Higher ages at first childbirth were associated with decreased lung cancer risk, while hormone replacement therapy users showed a greater likelihood of developing non-small cell lung cancer. Future research is needed to explore these findings further.
Article Synopsis
- A large study analyzed data from 444,143 Japanese individuals to investigate the relationship between body mass index (BMI) and lung cancer risk.
- Results showed that lower BMI, specifically under 18.5, increased lung cancer risk, while being overweight or obese correlated with reduced risk.
- The findings suggest an inverse relationship between BMI and lung cancer risk in the Japanese population, with the effect being more significant in male smokers, indicating possible smoking-related confounding.