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  • Ishihara, Junko  (14)
  • Kitamura, Tetsuhisa  (14)
  • Sawada, Norie  (14)
  • 1
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    Online Resource
    Dietary fibre intake is associated with reduced risk of lung cancer: a Japan public health centre-based prospective study (JPHC)
    Oxford University Press (OUP) ; 2022
    In:  International Journal of Epidemiology Vol. 51, No. 4 ( 2022-08-10), p. 1142-1152
    Details
    In: International Journal of Epidemiology, Oxford University Press (OUP), Vol. 51, No. 4 ( 2022-08-10), p. 1142-1152
    Abstract: Several epidemiological studies have been conducted to draw consistent conclusions regarding the effect of dietary fibre on lung diseases and lung cancer. However, the effect of dietary fibre on the incidence of lung cancer remains unclear in an Asian population. Methods We investigated the association between the intake of total dietary fibre and dietary fibre from different food sources and lung cancer incidence in a Japan public health centre-based prospective study (JPHC). A total of 73 405 participants (33 012 men and 40 393 women) aged 45–74 years were eligible for our study. Cox proportional hazards models were used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs). Results During a median follow-up of 18.0 years, 1546 (1042 men and 504 women) newly diagnosed cases of lung cancer were ascertained. In the multivariable models, total dietary fibre intake was inversely associated with lung cancer risk in men, the HRs Q5 vs Q1 (95% CI) were 0.77 (0.62 to 0.94), P-trend = 0.020. Dietary fibre intake from vegetables was protectively associated with lung cancer risk in men [HR Q5 vs Q1 (95% CI): 0.80 (0.64 to 0.99), P-trend = 0.053]. However, no such association was observed in women. Conclusions In men, a high intake of total dietary fibre may have preventive benefits for lung cancer incidence: dietary fibre intake from vegetables was associated with a lower incidence of lung cancer. However, similar associations did not appear in women. Further investigations are required to confirm the association between dietary fibre and lung cancer risk in women.
    Type of Medium: Online Resource
    ISSN: 0300-5771 , 1464-3685
    URL: Article
    DOI: 10.1093/ije/dyac054
    RVK:
    XF 4100
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1494592-7
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  • 2
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    Relationship between Meat/Fish Consumption and Biliary Tract Cancer: The Japan Public Health Center–Based Prospective Study
    American Association for Cancer Research (AACR) ; 2020
    In:  Cancer Epidemiology, Biomarkers & Prevention Vol. 29, No. 1 ( 2020-01-01), p. 95-102
    Details
    In: Cancer Epidemiology, Biomarkers & Prevention, American Association for Cancer Research (AACR), Vol. 29, No. 1 ( 2020-01-01), p. 95-102
    Abstract: The effect of meat and fish consumption on cancer risk has been well studied in humans. However, studies related to biliary tract cancer (BTC) are scarce. Methods: We examined the association between meat and fish consumption and the risk of BTC in a population-based prospective cohort study in Japan. HRs and 95% confidence intervals (CI) were estimated using the Cox proportional hazard model. Results: During 1995 and 1999, 43,177 men and 49,323 women ages 45 to 74 years were enrolled and followed up for 607,757.0 person-years (men) and 728,820.3 person-years (women) until 2012, during which time 217 male and 162 female BTC cases were identified. Higher total meat consumption was significantly associated with a decreased BTC risk in men (HR for the highest vs. lowest quartiles = 0.66; 95% CI, 0.44–0.98; Ptrend = 0.011) but not in women. Similar association was observed with red meat, but no association was observed with poultry. Fish was not associated with BTC risk. We further analyzed each BTC subtype to confirm the observed association with BTC. However, significant association with each BTC subtype was not observed, although a trend of decreased extrahepatic bile duct cancer risk was observed. Conclusions: BTC risk was lower among men who consumed more meat, particularly red meat, in Japan. Impact: This is the first prospective study that evaluated the relationship between meat and BTC. This may provide important suggestions to elucidate the etiology of BTC.
    Type of Medium: Online Resource
    ISSN: 1055-9965 , 1538-7755
    URL: Article
    DOI: 10.1158/1055-9965.EPI-19-0514
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2020
    detail.hit.zdb_id: 2036781-8
    detail.hit.zdb_id: 1153420-5
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  • 3
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    Acrylamide and Glycidamide Hemoglobin Adduct Levels and Breast Cancer Risk in Japanese Women: A Nested Case–Control Study in the JPHC
    American Association for Cancer Research (AACR) ; 2023
    In:  Cancer Epidemiology, Biomarkers & Prevention Vol. 32, No. 3 ( 2023-03-06), p. 415-421
    Details
    In: Cancer Epidemiology, Biomarkers & Prevention, American Association for Cancer Research (AACR), Vol. 32, No. 3 ( 2023-03-06), p. 415-421
    Abstract: Acrylamide (AA) is classified as “probably carcinogenic to humans (class 2A)” by the International Agency for Research on Cancer. AA causes cancer owing to its mutagenic and genotoxic metabolite, glycidamide (GA), and its effects on sex hormones. Both AA and GA can interact with hemoglobin to hemoglobin adducts (HbAA and HbGA, respectively), which are considered appropriate biomarkers of internal exposure of AA. However, few epidemiologic studies reported an association of HbAA and HbGA with breast cancer. Methods: We conducted a nested case–control study within the Japan Public Health Center–based Prospective Study cohort (125 cases and 250 controls). Cases and controls were categorized into tertiles (lowest, middle, and highest) using the distribution of HbAA or HbGA levels in the control group and estimated ORs and 95% confidence intervals (CI) using conditional logistic regression, adjusting for potential confounders. Results: No association was observed between HbAA (ORHighestvs.Lowest, 1.34; 95% CI, 0.69–2.59), HbGA (ORHighest vs. Lowest, 1.46; 95% CI, 0.79–2.69), their sum HbAA+HbGA (ORHighest vs. Lowest, 1.36; 95% CI, 0.72–2.58) and breast cancer; however, some evidence of positive association was observed between their ratio, HbGA/HbAA, and breast cancer (ORHighest vs. Lowest, 2.19; 95% CI, 1.11–4.31). Conclusions: There was no association between biomarkers of AA and breast cancer. Impact: It is unlikely that AA increases breast cancer risk; however, the association of AA with breast cancer may need to be evaluated, with a focus not only on the absolute amount of HbAA or HbGA but also on HbGA/HbAA and the activity of metabolic genes.
    Type of Medium: Online Resource
    ISSN: 1055-9965 , 1538-7755
    URL: Article
    DOI: 10.1158/1055-9965.EPI-22-0904
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2023
    detail.hit.zdb_id: 2036781-8
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  • 4
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    Associations between dairy intake and mortality due to all-cause and cardiovascular disease: the Japan Public Health Center-based prospective study
    Springer Science and Business Media LLC ; 2023
    In:  European Journal of Nutrition Vol. 62, No. 5 ( 2023-08), p. 2087-2104
    Details
    In: European Journal of Nutrition, Springer Science and Business Media LLC, Vol. 62, No. 5 ( 2023-08), p. 2087-2104
    Abstract: Some studies have investigated the relation between dairy products and mortality, but with inconsistent results. Objective We examined the association between the consumption of dairy products and the risk of all-cause, cancer-related, and cardiovascular disease (CVD)-related mortality. Methods From the Japan Public Health Center-based Prospective (JPHC) study, 43,117 males and 50,193 females with no history of cancer or CVD finished the food frequency questionnaire (FFQ) and were included in the study. Intake of dairy products was assessed using the FFQ and adjusted for total energy by using the residual method. We used multivariate Cox proportional hazard models to calculate hazard ratios (HRs) and 95% confidence intervals (95% CIs) for mortality risk in males and females. Results 14,211 deaths in males and 9547 deaths in females from all causes were identified during an average follow-up of 19.3 years. For males, total dairy consumption was nonlinearly and significantly associated with lower risk of mortality from all causes [the third quartile, HR = 0.87 (0.83, 0.91), the fourth quartile, HR = 0.89 (0.85, 0.94), P for nonlinearity  〈  0.001] and CVD [the third quartile, HR = 0.77 (0.70, 0.85), the fourth quartile, HR = 0.78 (0.70, 0.86), P for nonlinearity  〈  0.001]. Milk and fermented milk intake were inversely associated with all-cause and CVD-related mortality in males. Cheese consumption was inversely associated with CVD-related mortality among males. There was no association between total dairy intake and mortality risk among females. Conclusion For Japanese people, consumption of dairy products was associated with a decreased risk of mortality from all-cause and cardiovascular diseases among males.
    Type of Medium: Online Resource
    ISSN: 1436-6207 , 1436-6215
    URL: Article
    DOI: 10.1007/s00394-023-03116-w
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 1463312-7
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  • 5
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    Dietary Acrylamide Intake and the Risk of Hematological Malignancies: The Japan Public Health Center-Based Prospective Study
    MDPI AG ; 2021
    In:  Nutrients Vol. 13, No. 2 ( 2021-02-11), p. 590-
    Details
    In: Nutrients, MDPI AG, Vol. 13, No. 2 ( 2021-02-11), p. 590-
    Abstract: Acrylamide, which is present in many daily foods, is a probable human carcinogen. In 2002, it was identified in several common foods. Subsequently, western epidemiologists began to explore the relationship between dietary acrylamide exposure and cancer risk; however, limited suggestive associations were found. This prospective study aimed to examine the association between dietary acrylamide intake and the risk of hematological malignancies, including malignant lymphoma (ML), multiple myeloma (MM), and leukemia. We enrolled 85,303 participants in the Japan Public Health Center-based Prospective study on diet and cancer as from 1995. A food frequency questionnaire that included data on acrylamide in all Japanese foods was used to assess dietary acrylamide intake. We applied multivariable adjusted Cox proportional hazards models to reckon hazard ratios (HRs) for acrylamide intake for both categorical variables (tertiles) and continuous variables. After 16.0 median years of follow-up, 326 confirmed cases of ML, 126 cases of MM, and 224 cases of leukemia were available for final multivariable-adjusted analysis. HRs were 0.87 (95% confidence interval [CI]: 0.64–1.18) for ML, 0.64 (95% CI: 0.38–1.05) for MM, and 1.01 (95% CI: 0.71–1.45) for leukemia. Our results implied that acrylamide may not be related to the risk of hematological malignancies.
    Type of Medium: Online Resource
    ISSN: 2072-6643
    URL: Article
    DOI: 10.3390/nu13020590
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2518386-2
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  • 6
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    The relationship between vegetable/fruit consumption and gallbladder/bile duct cancer: A population‐based cohort study in J apan
    Wiley ; 2017
    In:  International Journal of Cancer Vol. 140, No. 5 ( 2017-03), p. 1009-1019
    Details
    In: International Journal of Cancer, Wiley, Vol. 140, No. 5 ( 2017-03), p. 1009-1019
    Abstract: What's new? Diets rich in vegetables and fruits can provide at least some degree of protection against a variety of cancers. However, it remains unclear whether such diets help defend against biliary cancers, including cancers of the gallbladder and the intrahepatic or extrahepatic bile ducts. In this prospective study in Japan, in which dietary information was captured via a food frequency questionnaire, higher vegetable and fruit consumption is strongly associated with a reduced risk of only extrahepatic bile duct cancer. Analysis by relevant nutrients suggests that the protective is due primarily to the intake of vitamin C, folate, and insoluble fiber.
    Type of Medium: Online Resource
    ISSN: 0020-7136 , 1097-0215
    URL: Issue
    URL: Article
    DOI: 10.1002/ijc.v140.5
    DOI: 10.1002/ijc.30492
    RVK:
    XA 10000
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 218257-9
    detail.hit.zdb_id: 1474822-8
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  • 7
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    Association between meat and saturated fatty acid intake and lung cancer risk: The Japan Public Health Center‐based prospective study
    Wiley ; 2020
    In:  International Journal of Cancer Vol. 147, No. 11 ( 2020-12), p. 3019-3028
    Details
    In: International Journal of Cancer, Wiley, Vol. 147, No. 11 ( 2020-12), p. 3019-3028
    Abstract: What's new? Previous studies have indicated that high red meat intake increased lung cancer risk in the Caucasian population, but consistent findings have not been reported in the Asian population. Differences in the dietary patterns between Asian, European, and American populations may also influence the risk of lung cancer. In this large population‐based prospective cohort study carried out in Japan, the authors found that total red meat intake was positively associated with increased lung cancer incidence in men. In contrast, high poultry and fish intake were not associated with raised lung cancer incidence in either men or women in this Asian study.
    Type of Medium: Online Resource
    ISSN: 0020-7136 , 1097-0215
    URL: Issue
    URL: Article
    DOI: 10.1002/ijc.v147.11
    DOI: 10.1002/ijc.33112
    RVK:
    XA 10000
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 218257-9
    detail.hit.zdb_id: 1474822-8
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  • 8
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    Dietary Acrylamide Intake and Risk of Lung Cancer: The Japan Public Health Center Based Prospective Study
    MDPI AG ; 2020
    In:  Nutrients Vol. 12, No. 8 ( 2020-08-12), p. 2417-
    Details
    In: Nutrients, MDPI AG, Vol. 12, No. 8 ( 2020-08-12), p. 2417-
    Abstract: Acrylamide, which forms in heat-treated foods with high carbohydrate content, is a probable human carcinogen. This study aimed to evaluate the association between dietary acrylamide intake and lung cancer using data from the Japan Public Health Center based Prospective Study. Our study included 85,303 participants who completed a food frequency questionnaire. Cox proportional hazards regression models were used to assess hazard ratios and 95% confidence intervals (CIs) after adjusting for confounders. After 14.3 years and 15.4 years of mean follow-up period, 1187 and 485 lung cancer cases were identified in men and women, respectively. The multivariable-adjusted hazard ratios of 10-µg/day increment in acrylamide intake were 1.01 (95% CI, 0.99–1.02) in men and 0.98 (95% CI, 0.95–1.02) in women. Compared with the lowest quartile of acrylamide intake, the hazard ratios for the highest quartile were 1.13 (95% CI, 0.95–1.33; p for trend = 0.12) in men and 1.03 (95% CI, 0.78–1.36; p for trend = 0.86) in women in the multivariable-adjusted model. Moreover, there was also no significant association observed in the stratified analysis for histological subtypes of lung cancer. This study demonstrated that dietary acrylamide intake was not associated with increased lung cancer risk in the Japanese population.
    Type of Medium: Online Resource
    ISSN: 2072-6643
    URL: Article
    DOI: 10.3390/nu12082417
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2518386-2
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  • 9
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    Dietary Acrylamide Intake and the Risk of Liver Cancer: The Japan Public Health Center-Based Prospective Study
    MDPI AG ; 2020
    In:  Nutrients Vol. 12, No. 9 ( 2020-08-19), p. 2503-
    Details
    In: Nutrients, MDPI AG, Vol. 12, No. 9 ( 2020-08-19), p. 2503-
    Abstract: Acrylamide has been studied for its carcinogenicity in experimental animals, causing tumors at several organ sites, and has been considered probably carcinogenic to humans as well. Given the small number of epidemiological studies that have been conducted, it is still uncertain whether the consumption of acrylamide is associated with liver cancer. Therefore, we investigated a study to determine the possible relationship between acrylamide intake and the risk of developing liver cancer in the Japanese population. A total of 85,305 participants, from the Japan Public Health Center-based Prospective Study, who provided a validated food-frequency questionnaire were enrolled between 1995 and 1998. During a median of 16.0 years follow-up, 744 new liver cancer cases were identified. Compared to the lowest tertile of acrylamide consumption ( 〈 4.8 µg/day), the multivariate hazard ratio (HR) for the highest tertile (≥7.6 µg/day) was 0.79 (95% confidence interval [CI] = 0.65–0.95) for liver cancer using multivariable model 1, adjusted for smoking status, body mass index (BMI), physical activity, medical history, and alcohol consumption; whereas the inverse relationship disappeared after additionally adjusting for coffee consumption in multivariable model 2 with HR of 1.08 (95% CI = 0.87–1.34) for the highest tertile. The effect of dietary acrylamide intake on the risk of liver cancer was not observed in the Japanese population.
    Type of Medium: Online Resource
    ISSN: 2072-6643
    URL: Article
    DOI: 10.3390/nu12092503
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
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  • 10
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    Dietary Acrylamide Intake and Risk of Esophageal, Gastric, and Colorectal Cancer: The Japan Public Health Center–Based Prospective Study
    American Association for Cancer Research (AACR) ; 2019
    In:  Cancer Epidemiology, Biomarkers & Prevention Vol. 28, No. 9 ( 2019-09-01), p. 1461-1468
    Details
    In: Cancer Epidemiology, Biomarkers & Prevention, American Association for Cancer Research (AACR), Vol. 28, No. 9 ( 2019-09-01), p. 1461-1468
    Abstract: Acrylamide has been classified as a probable human carcinogen based chiefly on laboratory evidence. However, the influence of dietary acrylamide intake on risk of esophageal, gastric, and colorectal cancer has not been extensively studied. We aimed to evaluate the association between dietary acrylamide intake and esophageal, gastric, and colorectal cancer using data from the Japan Public Health Center–based Prospective Study. Methods: Our study included 87,628 participants who completed a food-frequency questionnaire at enrollment in 1990 and 1993. We used Cox proportional hazards regression models to estimate hazards ratios and 95% confidence intervals (CI) after adjusting for confounding factors. Results: After 15.5, 15.3, and 15.3 mean years of follow-up for esophageal, gastric, and colorectal cancer, we identified and analyzed 391 esophageal, 2,218 gastric, and 2,470 colorectal cancer cases, respectively. Compared with the lowest quintile of acrylamide intake, the multivariate HR for the highest quintile was 0.86 (95% CI, 0.53–1.39; Ptrend = 0.814), 0.84 (95% CI, 0.69–1.01; Ptrend = 0.301), and 0.93 (95% CI, 0.79–1.08; Ptrend = 0.165) for esophageal, gastric, and colorectal cancer, respectively, in the multivariable-adjusted model. Furthermore, no significant associations were observed when the participants were stratified by cancer subsites. Conclusions: In conclusion, this study demonstrated that dietary acrylamide intake was not associated with increased risk of esophageal, gastric, or colorectal cancer among the Japanese population. Impact: It is the first time to assess the effect of dietary acrylamide intake on risk of digestive system cancer in Asian populations.
    Type of Medium: Online Resource
    ISSN: 1055-9965 , 1538-7755
    URL: Article
    DOI: 10.1158/1055-9965.EPI-18-1259
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2019
    detail.hit.zdb_id: 2036781-8
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