Passive Smoking and Breast Cancer - a Suspicious Link (original) (raw)
Related papers
Active and Passive Cigarette Smoke and Breast Cancer Survival
Annals of Epidemiology, 2007
The association between active and passive cigarette smoking before breast cancer diagnosis and survival was investigated among a cohort of invasive breast cancer cases (n Z 1273) participating in a population-based case-control study. METHODS: Participants diagnosed with a first primary breast cancer between August 1, 1996, and July 31, 1997, were followed-up until December 31, 2002, for all-cause mortality (n Z 188 deaths), including breast cancer-specific mortality (n Z 111), as reported to the National Death Index. RESULTS: In Cox models, the adjusted hazards ratios (HRs) for all-cause mortality were slightly higher among current and former active smokers, compared with never smokers (HR, 1.23; 95% confidence interval [95% CI], 0.83-1.84) and 1.19 (95% CI, 0.85-1.66), respectively). No association was found between active or passive smoking and breast cancer-specific mortality. All-cause and breast cancer-specific mortality was higher among active smokers who were postmenopausal (HR, 1.64; 95% CI, 1.03-2.60 and HR, 1.45; 95% CI, 0.78-2.70, respectively) or obese at diagnosis (HR, 2.10; 95% CI, 1. 1.97; 95% CI, respectively). Associations between smoking and all-cause and breast cancerspecific mortality did not differ by cancer treatment. CONCLUSIONS: These data do not provide strong evidence for an association between smoking and allcause or breast cancer-specific mortality, although smokers who are postmenopausal or obese at diagnosis may be at higher risk.
The relation of passive smoking to lung cancer
Lung Cancer, 1987
To evaluate the role of passive smoking in the development of lung cancer among nonsmokers, data were pooled from three large incident case-control interview studies. Ninety-nine lung cancer cases and 736 controls never used any form of tobacco. Overall the adjusted odds ratio for lung cancer among nonsmokers ever living with a smoker was 0.8 (95% confidence interval, 0.5-1.3) rising to 1.2 among those exposed for 40 or more years. Persons living with a spouse who smoked cigarettes were at increased risk (adjusted odds ratio, 1.5; 95% confidence interval, 0.8-2.8). When adjusted for age and gender, there was a significant trend in risk with increasing amounts smoked per week by the spouse (P = 0.05) and with cumulative pack-years of exposure (P = 0.03). This effect was limited to females, especially older women whose husbands were heavy smokers. The elevated risk associated with spouse smoking was restricted to squamous and small cell carcinomas (odds ratio, 2.9; 95% confidence interval, 0.9-9.3), which provides additional evidence linking passive smoking to lung cancer.
RESPONSE: Re: Passive Smoking Exposure and Female Breast Cancer Mortality
JNCI Journal of the National Cancer Institute, 2001
The study by Wartenberg et al. (1) is a welcome addition to the literature investigating the relationship between exposure to environmental tobacco smoke (ETS) and breast cancer risk: Large prospective studies are important for understanding etiologic issues. Careful examination of the American Cancer Society's Cancer Prevention Study II (CPS-II) analyses is warranted, however, given that the negative findings are apparently
Smoking and survival after breast cancer diagnosis
International Journal of Cancer, 2007
We examined whether a history of smoking is associated with an increased risk of death from any cause or from breast cancer, among women diagnosed with breast cancer. This was a prospective observational study among 5,056 women from the Nurses' Health Study with Stages I-III invasive breast cancer diagnosed between 1978 and 2002 and for whom we had information on smoking, and who were followed until January 2002 or death, whichever came first. Subjects were classified as current, former or never smokers based upon smoking status at the biennial questionnaire immediately preceding the breast cancer diagnosis. In multivariate-adjusted analyses, compared with never smokers, women who were current smokers had a 43% increased adjusted relative risk (RR) [95% confidence interval (95% CI): 1.24-1.65] of death from any cause. A strong linear gradient was observed with the number of cigarettes per day smoked, p-trend <0.0001; the RR (95% CI) for 1-14, 15-24 and 25 or more cigarettes per day was 1.27 (1.01-1.61), 1.30 (1.08-1.57) and 1. 79 (1.47-2.19). In contrast, there was no association with current smoking and breast cancer death; the RR (95% CI) was 1.00 (0.83-1.19). Current and past smokers were more likely than never smokers to die from primary lung cancer, chronic obstructive pulmonary disease and other lung diseases. We conclude that a history of smoking increased mortality following diagnosis with breast cancer, but did not increase mortality from breast cancer. ' 2007 Wiley-Liss, Inc.
A prospective study of smoking and risk of breast cancer in young adult women [J]
Cancer Epidemiology Biomarkers & Prevention
Objective: To investigate the association between smoking and invasive breast cancers characterized by their estrogen receptor status in a large prospective study of mainly premenopausal women. Method: 112,844 women aged 25 -42 years in 1989 were followed 10 years; questionnaire information on medical illnesses and risk factors was collected biennially and information on diet was collected in 1991 and 1995. During this period of follow-up (1,077,536 person-years), 1009 incident breast cancer cases were documented. Results: In the multivariate-adjusted models, smoking status was not significantly related to overall breast cancer risk: compared with never smokers, the relative risks (RRs) were 1.18 [95% confidence interval (CI) 1.02-1.36] for past smokers and 1.12 (95% CI 0.92 -1.37) for current smokers. Increasing duration of smoking before the first pregnancy was associated with a greater risk of breast cancer, although little increase was seen in the highest category: compared with never smokers, RRs were 1.42 (95% CI 1.10 -1.83) for 15 -19 years of smoking and 1.10 (95% CI 0.80 -1.52) for z20 years of smoking (P for trend = 0.01). Smoking was related most strongly to the risk of estrogen receptorpositive breast cancers. For women who had smoked for z20 years, the RR of estrogen receptor-positive cancer was 1.37 (95% CI 1.07-1.74) and the RR of estrogen receptor-negative cancer was 1.04 (95% CI 0.71 -1.53). For smoking before age 15, the RRs were 1.49 (95% CI 1.03 -2.17) for estrogen receptor-positive cancer and 1.19 (95% CI 0.69 -2.08) for estrogen receptor-negative cancer. Conclusion: Our results suggest that longer duration of smoking may be related to the risk of estrogen receptorpositive breast cancer but possibly less so for estrogen receptor-negative breast cancer. (Cancer Epidemiol Biomarkers Prev 2004;13(3): 398 -404)
Tobacco Induced Diseases
The aim of this study was to identify probable intermediate biomarkers of disturbed pathways and their link between smoking. Methods Un-stimulated whole saliva and serum samples were collected from a total of 30 systemically healthy participants with periodontally healthy smokers (S) (n=15) and nonsmokers (n=15). Periodontal indices (plaque index, gingival index, probing depth, bleeding on probing, clinical attachment level) were recorded to confirm periodontal health. Saliva was purified, and a total of 28 amino acids and metabolites were analyzed by liquid chromatographymass spectrometry (LC-MS/MS). Smoking status was validated measuring serum cotinine levels. Intergroup comparisons were assessed using the Mann Whitney U test. Results When 28 amino acids were evaluated, smokers had statistically significantly higher cystathionine levels than non-smokers (p <0.05). Conclusions Saliva cystathionine is associated with smoking in periodontally healthy individuals, and is possibly related to altered sulfuration pathway.
The Relation of Passive Smoking to Lung Cancer1
1986
To evaluate the role of passive smoking in the development of lung cancer among nonsmokers, data were pooled from three large incident case-control interview studies. Ninety-nine lung cancer cases and 736 controls never used any form of tobacco. Overall the adjusted odds ratio for lung cancer among nonsmokers ever living with a smoker was 0.8 (95% confidence interval, 0.5-1.3) rising
Environmental tobacco smoke and breast cancer incidence
2004
To evaluate whether environmental tobacco smoke (ETS) influences breast cancer incidence, data from a population-based casecontrol study were analyzed. Respondents with available ETS information assessed by in-person questionnaires included 1356 newly diagnosed cases and 1383 controls. Relative to nonsmokers who reported no residential ETS exposure throughout the life course, the odds ratios (OR) for breast cancer were not substantially elevated in relation to ETS exposure, active smoking, or a joint measure of active and passive smoking (OR, 1.15, 95% CI, 0.90, 1.48). An increased OR, however, was noted among nonsmokers who lived with a smoking spouse for over 27 years (2.10, 95% CI, 1.47, 3.02), although no dose-response was evident. Also, among women with hormone-receptor-positive tumors only, the OR for both active and passive smoking was increased (1.42 for ER + PR + , 95% CI, 1.00, 2.00). Our data suggest that if there is an effect for ETS on breast cancer, that effect is restricted to selected subgroups of women, such as those with long-term exposure from a smoking spouse. r