Husband's smoking status and breast cancer risk in Japan: From the Takayama study

Wada, Keiko; Kawachi, Toshiaki; Hori, Akihiro; Takeyama, Naoharu; Tanabashi, Shinobu; Matsushita, Shogen; Tokimitsu, Naoki; Nagata, Chisato

doi:10.1111/cas.12619

Cited by 12 publications

(19 citation statements)

References 28 publications

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“…There is increasing evidence which supports the link between BC risk and heavy smoking over a long period of time (American Cancer Society, 2016). This was confirmed in several articles demonstrating a clear association between BC risk and exposure, either active or passive, to tobacco smoke (Mizoo et al, 2013;Pimhanam et al, 2014;Tong et al, 2014;Wada et al, 2015).…”

Section: Modifiable Risk Factorsmentioning

confidence: 57%

“…Huang et al, (2014) reported that among participants from China, of non-agricultural population, and second industry output; in contrast, incidence was negatively correlated with the percentage of population employed in primary industry (Fei et al, 2015). Other modifiable risk factors including active or passive smoking (Mizoo et al, 2013;Pimhanam et al, 2014;Tong et al, 2014;Wada et al, 2015), high body mass index (BMI) (Mizoo et al, 2013;Sangrajrang et al, 2013;Suzuki et al, 2013;Wang et al, 2013b;Anothaisintawee et al, 2014;Wada et al, 2014;Fu et al, 2015), use of oral contraceptives (Bhadoria et al, 2013;Anothaisintawee et al, 2014;Poosari et al, 2014), high perceived level of stress, and low level of physical later age at either first live birth, or at first pregnancy and last pregnancy were associated with increased BC risk (p-trend=0.002, 0.015, 0.008, respectively). Among participants from Japan, BC was increased in women who performed mixed feeding (HR 1.12, 95% CI, 0.92-1.37, p-trend=0.014) or feeding only with formula (HR 1.80, 95% CI, 1.14-2.86, p-trend=0.014) compared with women who only breastfed (Sugawara et al, 2013).…”

Section: Reproductive History and Breastfeedingmentioning

confidence: 99%

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A Review of the Epidemiology of Breast Cancer in Asia: Focus on Risk Factors

Youn

Han

2020

Asian Pac J Cancer Prev

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Background and Aim: Breast cancer is the most prevalent cancer in women. To date, regional differences in breast cancer risk factors have not been identified. The aim of our review was to gain a better understanding of the role of risk factors in women with breast cancer in Asia. Methods: We conducted a PubMed search on 15 March 2016, for journal articles published in English between 2011 and 2016, which reported data for human subjects in Asia with a diagnosis of breast cancer. Search terms included breast neoplasm, epidemiology, Asia, prevalence, incidence, risk and cost of illness. Studies of any design were included, except for review articles and meta-analyses, which were excluded to avoid duplication of data. No exclusions were made based on breast cancer treatment. We reported the results using the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Results: A total of 776 abstracts were retrieved. After screening against the eligibility criteria, 562 abstracts were excluded. The remaining 214 abstracts, which were published between 2013 and 2015, were included in this review. Results were summarized and reported under three categories: incidence, prevalence or outcomes for breast cancer in Asia; modifiable risk factors; and non-modifiable risk factors. We found that the increased risk of breast cancer among participants from Asia was associated with older age, family history of breast cancer, early menarche, late menopause, high body mass index, being obese or overweight, exposure to tobacco smoke, and high dietary intake of fats or fatty foods. In contrast, intake of dietary fruits, vegetables, and plant-and soy-based products was associated with a decreased breast cancer risk. While based on limited data, when compared to women from the United States, women from Asia had a decreased risk of breast cancer. Conclusions: This review of 214 abstracts of studies in Asia, published between 2013 and 2015, confirmed the relevance of known non-modifiable and modifiable risk factors for women with breast cancer.

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Section: Modifiable Risk Factorsmentioning

confidence: 57%

Section: Reproductive History and Breastfeedingmentioning

confidence: 99%

A Review of the Epidemiology of Breast Cancer in Asia: Focus on Risk Factors

Youn

Han

2020

Asian Pac J Cancer Prev

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“…Results for various ETS exposure indices were reported. Seven studies (Alberg et al, 2004 ; Hirayama, 1987 ; Jee et al, 1999 ; Nishino et al, 2014 ; Roddam et al, 2007 ; Tong et al, 2014 ; Wada et al, 2015 ) only recorded exposure from the spouse or partner, while 10 further studies (Delfino et al, 2000 ; Gammon et al, 2004 ; Gram et al, 2005 ; Lash & Aschengrau, 1999 , 2002 ; Lin et al, 2008 ; Mechanic et al, 2006 ; Pirie et al, 2008 ; Sandler et al, 1985 ; Woo et al, 2000 ) only considered at-home exposure. The other studies collected more extensive information.…”

Section: Resultsmentioning

confidence: 99%

“…The abstract by Woo et al ( 2000 ) does not make the position clear for the other nested study. Given the length of follow-up was 10 years or more in three prospective studies (Hanaoka et al, 2005 ; Rosenberg et al, 2013 ; Wada et al, 2015 ), some of the women would have reached the menopause between interview and breast cancer diagnosis, so the results from the two types of study are not completely comparable. This problem is less so for Pirie et al ( 2008 ), where follow-up was only for 3.5 years.…”

Section: Discussionmentioning

confidence: 99%

Environmental tobacco smoke exposure and risk of breast cancer in nonsmoking women. An updated review and meta-analysis

Hamling

2016

Inhalation Toxicology

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Context: In 2006, we reviewed the evidence on environmental tobacco smoke (ETS) and breast cancer in nonsmoking women. Since then various studies and reviews have been published but opinion remains divided. Objective: To provide an updated review. Methods: We extracted study details, derived relative risk (RR) estimates with confidence intervals (CIs) for various ETS exposure indices, and conducted meta-analyses. Results: The update increased the number of studies from 22 to 47. Using an index for each study most closely equivalent to “spouse ever smoked”, a weak but significant association was seen (random-effects RR = 1.15, 95% CI = 1.07–1.23). However, the estimates were heterogeneous: higher for Asian studies than for North American or European studies, higher for studies adjusting for fewer potential confounding variables, and close to 1.0 for prospective studies, regardless of whether or not they asked detailed questions on ETS exposure. The RR for eight prospective studies asking detailed questions was 1.003, 95% CI = 0.96–1.05. Risk was increased in premenopausal women (RR = 1.36, 95% CI = 1.15–1.60), but not postmenopausal women. Dose–response findings were similarly heterogeneous. No significant increase was seen for childhood or workplace exposure, but an increase was seen for total exposure (RR = 1.22, 95% CI = 1.09–1.37). Conclusions: Increases mainly derived from case-control studies are prone to recall bias. Study weaknesses and possible publication bias limit interpretation. Considering also the weak association of smoking with breast cancer, and the much lower exposures from ETS than from smoking, our analyses do not clearly demonstrate that ETS exposure increases risk of breast cancer in nonsmokers. More research is needed.

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“… 7 , 11 In addition, husband’s smoking is a significant risk factor for non-respiratory ETS-related diseases for the nonsmoking wife, such as coronary artery disease (CAD), 12 stroke 13 and breast cancer. 14 …”

Section: Introductionmentioning

confidence: 99%

Exposure to environmental tobacco smoke from husband more strongly impacts on the airway obstruction of nonsmoking women

Suyama

Kozu

Tanaka

et al. 2017

COPD

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BackgroundThe impact of airway obstruction of nonsmoking women caused by their husband’s smoking is unclear, despite the association between environmental tobacco smoke (ETS) exposure at home and obstructive pulmonary diseases among nonsmoking women. The aim of this study was to provide evidence that ETS exposure from the husband at home has a more significant influence on the airway obstruction of nonsmoking women than other housemates.Participants and methodsNonsmoking women aged 40 years or older were recruited from the health checkup during May 2015–December 2016, Japan. They answered structured questionnaires, including ETS exposure from their husbands and other housemates (parents, siblings and dependants), and performed spirometry. We categorized the women with any history of ETS exposure from housemates into three groups (A = husband, B = others and C = both of husband and others) and defined the control group as those with no ETS exposure from housemates.ResultsA total of 811 nonsmoking women completed questionnaires and spirometry. The proportion of nonsmoking women who had airway obstruction (forced expiratory volume in 1 second [FEV1]/forced vital capacity [FVC] <70%) among Group A (7.5%) was significantly higher than those in the control group (1.1%, p<0.01) and Group B (0.8%, p<0.01). The proportion of airway obstruction in Group C (6.4%) was also higher than that in the control group (p<0.05) and Group B (p<0.05). ETS exposure from husband (odds ratio [OR], 3.53; 95% confidence interval [CI], 1.48–8.42) remained strongly associated with airway obstruction after multiple logistic regression analysis, adjusting for age, housemate’s smoking habits, family history and ETS exposure in childhood and at work.ConclusionNonsmoking women who were exposed to ETS from their husband had the lowest FEV1/FVC, and a higher proportion of them had airway obstruction when compared to nonsmoking women who experienced ETS from housemates other than their husbands. The findings suggest that tobacco control in husbands is the most important measure to prevent airway obstruction of nonsmoking women at home.

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Husband's smoking status and breast cancer risk in Japan: From the Takayama study

Cited by 12 publications

References 28 publications

A Review of the Epidemiology of Breast Cancer in Asia: Focus on Risk Factors

A Review of the Epidemiology of Breast Cancer in Asia: Focus on Risk Factors

Environmental tobacco smoke exposure and risk of breast cancer in nonsmoking women. An updated review and meta-analysis

Exposure to environmental tobacco smoke from husband more strongly impacts on the airway obstruction of nonsmoking women

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