scholarly journals Concurrent Use in Taiwan of Chinese Herbal Medicine Therapies among Hormone Users Aged 55 Years to 79 Years and Its Association with Breast Cancer Risk: A Population-Based Study

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yueh-Ting Tsai ◽  
Jung-Nien Lai ◽  
Chien-Tung Wu ◽  
Shun-Ku Lin
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Proportional Hazards ◽  
Population Based ◽  
Cox Proportional Hazards ◽  
Research Database ◽  
Herbal Products ◽  
Chinese Herbal ◽  
Concurrent Use

Background. The purpose of the present study was to analyze the concurrent use of Chinese herbal products (CHPs) among women aged 55 to 79 years who had also been prescribed hormonal therapies (HT) and its association with breast cancer risk.Methods. The use, frequency of service, and CHP prescribed among 17,583 HT users were evaluated from a random sample of 1 million beneficiaries from the National Health Insurance Research Database. A logistic regression method was used to identify the factors that were associated with the coprescription of a CHP and HT. Cox proportional hazards regressions were performed to calculate the hazard ratios (HRs) of breast cancer between the TCM nonusers and women who had undergone coadministration of HT and a CHP or CHPs.Results. More than one out of every five study subjects used a CHP concurrently with HT (CHTCHP patients).Shu-Jing-Huo-Xie-Tangwas the most commonly used CHP coadministered with HT. In comparison to HT-alone users, the HRs for invasive breast cancer among CHTCHP patients were not significantly increased either in E-alone group or in mixed regimen group.Conclusions. The coadministration of hormone regimen and CHPs did not increase the risk of breast cancer.

scholarly journals Concurrent Use of Hypnotic Drugs and Chinese Herbal Medicine Therapies among Taiwanese Adults with Insomnia Symptoms: A Population-Based Study

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Kuei-Hua Lee ◽  
Yueh-Ting Tsai ◽  
Jung-Nien Lai ◽  
Shun-Ku Lin
Keyword(s):  
Hip Fracture ◽  
Drug Interactions ◽  
Drug Users ◽  
Proportional Hazards ◽  
Cox Proportional Hazards ◽  
Research Database ◽  
Chinese Herbal ◽  
Hypnotic Drug ◽  
Concurrent Use ◽  
Hypnotic Drugs

Background. The increased practice of traditional Chinese medicine (TCM) worldwide has raised concerns regarding herb-drug interactions. The purpose of our study is to analyze the concurrent use of Chinese herbal products (CHPs) among Taiwanese insomnia patients taking hypnotic drugs.Methods. The usage, frequency of services, and CHP prescribed among 53,949 insomnia sufferers were evaluated from a random sample of 1 million beneficiaries in the National Health Insurance Research Database. A logistic regression method was used to identify the factors that were associated with the coprescription of a CHP and a hypnotic drug. Cox proportional hazards regressions were performed to calculate the hazard ratios (HRs) of hip fracture between the two groups.Results. More than 1 of every 3 hypnotic users also used a CHP concurrently.Jia-Wei-Xiao-Yao-San(Augmented Rambling Powder) andSuan-Zao-Ren-Tang(Zizyphus Combination) were the 2 most commonly used CHPs that were coadministered with hypnotic drugs. The HR of hip fracture for hypnotic-drug users who used a CHP concurrently was 0.57-fold (95% CI = 0.47–0.69) that of hypnotic-drug users who did not use a CHP.Conclusion. Exploring potential CHP-drug interactions and integrating both healthcare approaches might be beneficial for the overall health and quality of life of insomnia sufferers.

scholarly journals Milk Consumption Decreases Risk for Breast Cancer in Korean Women under 50 Years of Age: Results from the Health Examinees Study

Nutrients ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 32 ◽  
Author(s):  
Woo-Kyoung Shin ◽  
Hwi-Won Lee ◽  
Aesun Shin ◽  
Jong-koo Lee ◽  
Daehee Kang
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Epidemiologic Studies ◽  
Cox Proportional Hazards ◽  
Cox Proportional Hazards Model ◽  
Milk Consumption ◽  
Korean Women

Epidemiologic studies regarding breast cancer risk related to milk consumption remain controversial. The aim of this study was to evaluate the association between milk consumption and the risk for breast cancer. A total of 93,306 participants, aged 40–69 years, were included in the prospective cohort study in the Health Examinees-Gem (HEXA-G) study between 2004 and 2013. Dietary intake was assessed using a validated food frequency questionnaire. Information on cancer diagnosis in the eligible cohort was retrieved from the Korea Central Cancer Registry through 31 December 2014. The Cox proportional hazards model was used to estimate multivariate hazard ratios (HRs) and 95% confidence intervals (CIs). A total of 359 breast cancer cases were observed over a median follow-up period of 6.3 years. Milk consumption was not associated with decreased risk for breast cancer in the total population (p for trend = 0.0687). In women under 50 years of age, however, milk consumption was inversely associated with breast cancer risk. In the comparison between highest (≥1 serving/day) and lowest (<1 serving/week) intake categories of milk, the multivariate HR (95% CI) was 0.58 (0.35–0.97, p for trend = 0.0195)) among women under 50 years of age. In conclusion, our findings show that milk consumption in Korean women aged 50 or younger is associated with a decreased risk for breast cancer, when compared to those who never or rarely consumed milk. Further studies need to be conducted to assess this relationship and confirm these results.

scholarly journals Reproductive Factors and Breast Cancer Risk in Lithuanian Women: A Population-Based Cohort Study

2020 ◽  
Vol 28 (2) ◽  
pp. 29-34
Author(s):  
Laura Steponavičienė ◽  
Rasa Vansevičiūtė ◽  
Lina Zabulienė ◽  
Domantas Jasilionis ◽  
Vincas Urbonas ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Proportional Hazards ◽  
Reproductive Factors ◽  
Population Based ◽  
Number Of Children ◽  
Nulliparous Women ◽  
Hazard Ratios ◽  
Former Ussr

 Background. Although the relationship between reproductive factors and breast cancer is internationally proved, reliable data on former USSR countries are scarce. This study examines the association of parity, age at the first childbirth, number of children, and breast cancer risk in Lithuanian women.Methods. The study that included women from 40 to 79 years old was based on a dataset that was made up linking all records from the 2001 census, all cancer incidence records from the Lithuanian Cancer Registry and all death records from Statistics Lithuania between 6th April 2001 and 31st December 2009. Cox’s proportional hazards regression models were used to estimate the hazard ratios (HRs) for parity, age at the first childbirth, and number of children.Results. If compared to nulliparous women, parous women had a lower risk of breast cancer (HR=0.84, 95% CI 0.78–0.89) and this risk further decreased with an increasing number of children. Women who gave birth after the age of 25 had a significantly higher risk of breast cancer. This disadvantage became statistically insignificant or decreased after controlling for total number of children.Conclusions. Parity and age at the first childbirth are strong predictors of breast cancer risk among Lithuanian women.

scholarly journals The Prescription Pattern of Chinese Herbal Products ContainingGinsengamong Tamoxifen-Treated Female Breast Cancer Survivors in Taiwan: A Population-Based Study

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Wei-Lung Hsu ◽  
Yueh-Ting Tsai ◽  
Chien-Tung Wu ◽  
Jung-Nien Lai
Keyword(s):  
Breast Cancer ◽  
Endometrial Cancer ◽  
Cancer Survivors ◽  
Breast Cancer Survivors ◽  
Population Based ◽  
Interactive Effects ◽  
Tamoxifen Treatment ◽  
Research Database ◽  
Herbal Products ◽  
Chinese Herbal

Background.The purpose of our study is to analyze the association between prescribed Chinese herbal products (CHPs) containingGinsengand the risk of endometrial cancer among tamoxifen (TMX) users and to identify any possible interactive effects betweenGinsengand TMX with respect to preventing the development of subsequent endometrial cancer in an estrogen-dependent breast cancer population in Taiwan.Methods.All patients newly diagnosed with invasive breast cancer receiving tamoxifen treatment from January 1, 1998, to December 31, 2008, were selected from the National Health Insurance Research Database. The usage, frequency of service, and CHP-Ginsengprescribed across the 30,556 TMX-treated breast cancer (BC) survivors were evaluated. Logistic regression was employed to estimate the odds ratios (ORs) for the utilization of CHP-Ginseng. Cox’s proportional hazard regression was performed to calculate the hazard ratios (HRs) for endometrial cancer associated withGinsenguse among the TMX-treated BC cohort.Results.The HR for the development of endometrial cancer among breast cancer survivors who had ever takenGinsengafter TXM treatment was significantly decreased compared to those who never used CHP.Conclusion.A significant inhibitory relationship betweenGinsengconsumption and subsequent endometrial cancer less than 2 years after TMX treatment was detected among BC survivors.

scholarly journals Risk of breast cancer in women with non-lactational mastitis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Chun-Ming Chang ◽  
Mei-Chen Lin ◽  
Wen-Yao Yin
Keyword(s):  
Breast Cancer ◽  
Socioeconomic Status ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Comparison Group ◽  
Population Based ◽  
Incidence Rates ◽  
Research Database ◽  
Taiwan National Health Insurance ◽  
Lactational Mastitis

Abstract Little is known regarding the association of non-lactational mastitis women with breast cancer risk. This population-based cohort study examined the breast cancer risk in women with non-lactational mastitis. We identified 3,091 women with non-lactational mastitis between 2000 and 2011 using the Taiwan National Health Insurance Research Database. We performed 1:4 propensity score matching by age, socioeconomic status and comorbidities and identified 12,364 women without non-lactational mastitis. The mean age of women with non-lactational mastitis was 37.9 years; these women had a higher breast cancer risk than the comparison group (adjusted hazard ratio = 1.94, 95% confidence interval: 1.30–2.90). The incidence rates of breast cancer in women with non-lactational mastitis and the comparison group were 14.79 and 7.57 per 10,000 person-years, respectively. Furthermore, non-lactational mastitis was a risk factor for breast cancer in women aged <50 years, women with lower socioeconomic status and women with hormonal medication (p < 0.05). Women who had more episodes of non-lactational mastitis had a higher risk of developing a breast cancer. Thus, the risk of breast cancer in women with non-lactational mastitis is significantly higher than those without non-lactational mastitis.

scholarly journals Body Fat and Breast Cancer Risk in Postmenopausal Women: A Longitudinal Study

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Thomas E. Rohan ◽  
Moonseong Heo ◽  
Lydia Choi ◽  
Mridul Datta ◽  
Jo L. Freudenheim ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Postmenopausal Women ◽  
Body Fat ◽  
Fat Mass ◽  
Proportional Hazards ◽  
Cox Proportional Hazards ◽  
Anthropometric Indices ◽  
Cox Proportional Hazards Models

Associations between anthropometric indices of obesity and breast cancer risk may fail to capture the true relationship between excess body fat and risk. We used dual-energy-X-ray-absorptiometry- (DXA-) derived measures of body fat obtained in the Women’s Health Initiative to examine the association between body fat and breast cancer risk; we compared these risk estimates with those for conventional anthropometric measurements. The study included 10,960 postmenopausal women aged 50–79 years at recruitment, with baseline DXA measurements and no history of breast cancer. During followup (median: 12.9 years), 503 incident breast cancer cases were diagnosed. Hazard ratios (HR) and 95% confidence intervals (CI) were estimated using Cox proportional hazards models. All baseline DXA-derived body fat measures showed strong positive associations with breast cancer risk. The multivariable-adjusted HR for the uppermost quintile level (versus lowest) ranged from 1.53 (95% CI 1.14–2.07) for fat mass of the right leg to 2.05 (1.50–2.79) for fat mass of the trunk. Anthropometric indices (categorized by quintiles) of obesity (BMI (1.97, 1.45–2.68), waist circumference (1.97, 1.46–2.65), and waist : hip ratio (1.91, 1.41–2.58)) were all strongly, positively associated with risk and did not differ from DXA-derived measures in prediction of risk.

scholarly journals No association between coffee, tea or caffeine consumption and breast cancer risk in a prospective cohort study

2011 ◽  
Vol 14 (7) ◽  
pp. 1315-1320 ◽  
Author(s):  
Guy Fagherazzi ◽  
Marina S Touillaud ◽  
Marie-Christine Boutron-Ruault ◽  
Françoise Clavel-Chapelon ◽  
Isabelle Romieu
Keyword(s):  
Breast Cancer ◽  
Cohort Study ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Proportional Hazards ◽  
Menopausal Status ◽  
Cox Proportional Hazards ◽  
Caffeine Intake ◽  
Caffeine Consumption ◽  
Receptor Status

AbstractObjectiveNumerous mechanisms for the effects of coffee, tea and caffeine on the risk of breast cancer have been suggested. Caffeine intake has already been associated with high plasma levels of female hormones, but associations have not been clearly demonstrated in epidemiological studies.DesignWe examined prospectively the association of coffee, tea and caffeine consumption with breast cancer risk in a French cohort study.SettingDietary information was obtained from a 208-item diet history questionnaire self-administered in 1993–1995. Multivariable Cox proportional hazards regression models were used to estimate hazards ratios and 95 % confidence intervals.SubjectsThe study was conducted on 67 703 women with available dietary information. During a median follow-up of 11 years, 2868 breast cancer cases were diagnosed.ResultsMedian intake was 280 ml/d (2·2 cups/d) for coffee and 214 ml/d (1·7 cups/d) for tea. Median caffeine intake was 164 mg/d. No association was found between consumption of coffee, tea or caffeine and breast cancer risk. Sub-analyses by tumour receptor status, menopausal status, type of coffee (regular or decaffeinated) and meals at which beverages were drunk led to the same conclusion.ConclusionsResults from this prospective study showed no relationship between coffee, tea or caffeine intake and breast cancer risk overall or by hormone receptor status.

scholarly journals Blood Arsenic Levels as a Marker of Breast Cancer Risk among BRCA1 Carriers

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3345
Author(s):  
Wojciech Marciniak ◽  
Tomáš Matoušek ◽  
Susan Domchek ◽  
Angelo Paradiso ◽  
Margherita Patruno ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Proportional Hazards ◽  
Cox Proportional Hazards ◽  
Breast Cancers ◽  
Lifetime Cancer Risk ◽  
Pathogenic Variants ◽  
Inherited Susceptibility ◽  
Increased Risk

An important group of breast cancers is those associated with inherited susceptibility. In women, several predisposing mutations in genes involved in DNA repair have been discovered. Women with a germline pathogenic variant in BRCA1 have a lifetime cancer risk of 70%. As part of a larger prospective study on heavy metals, our aim was to investigate if blood arsenic levels are associated with breast cancer risk among women with inherited BRCA1 mutations. A total of 1084 participants with pathogenic variants in BRCA1 were enrolled in this study. Subjects were followed from 2011 to 2020 (mean follow-up time: 3.75 years). During that time, 90 cancers were diagnosed, including 67 breast and 10 ovarian cancers. The group was stratified into two categories (lower and higher blood As levels), divided at the median (<0.85 µg/L and ≥0.85 µg/L) As level among all unaffected participants. Cox proportional hazards models were used to model the association between As levels and cancer incidence. A high blood As level (≥0.85 µg/L) was associated with a significantly increased risk of developing breast cancer (HR = 2.05; 95%CI: 1.18–3.56; p = 0.01) and of any cancer (HR = 1.73; 95%CI: 1.09–2.74; p = 0.02). These findings suggest a possible role of environmental arsenic in the development of cancers among women with germline pathogenic variants in BRCA1.

scholarly journals 1191Endogenous hormones and risk of invasive breast cancer in pre- and post-menopausal women

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Sandar Tin Tin ◽  
Gillian K Reeves ◽  
Timothy J Key
Keyword(s):  
Breast Cancer ◽  
Breast Cancer Risk ◽  
Cancer Risk ◽  
Invasive Breast Cancer ◽  
Proportional Hazards ◽  
Menopausal Status ◽  
Cox Proportional Hazards ◽  
Sex Hormone Binding Globulin ◽  
Menopausal Women ◽  
Post Menopausal

Abstract Background Some endogenous hormones have been associated with breast cancer risk, but the nature of these relationships is not fully understood. We investigated the associations between serum concentrations of testosterone, sex hormone binding globulin (SHBG), insulin-like growth factor-1 (IGF-1) and oestradiol (pre-menopausal women only) and the risk of invasive breast cancer using data from UK Biobank. Methods We included 30,565 pre-menopausal and 133,294 post-menopausal women in this analysis. Hormone concentrations were measured in serum collected between 2006 and 2010, and incident cancer cases were identified through linkage to cancer and death registries. Multivariable Cox proportional hazards models were used, and hazard ratios (HRs) were corrected for regression dilution bias using repeat measures collected in about 5,000 women four years after recruitment (except for oestradiol). Results During a median follow-up of 7.1 years, 527 pre-menopausal and 2,997 post-menopausal women were diagnosed with invasive breast cancer. Cancer risk was positively associated with testosterone in post-menopausal women (HR per 0.5 nmol/L increment: 1.18; 95% CI: 1.14, 1.23) but not in premenopausal women (pheterogeneity=0.03), and with IGF-1 (HR per 5 nmol/L increment: 1.18; 1.02, 1.35 (pre-menopausal) and 1.07; 1.01, 1.12 (post-menopausal); pheterogeneity=0.2), and inversely associated with SHBG (HR per 30 nmol/L increment: 0.96; 0.79, 1.15 (pre-menopausal) and 0.89; 0.84, 0.94 (post-menopausal); pheterogeneity=0.4). Oestradiol was not associated with risk, but there were study limitations for this hormone. Conclusions This study confirms associations of testosterone, IGF-1 and SHBG with breast cancer risk, with heterogeneity by menopausal status for testosterone. Key messages Breast cancer risk was positively associated with testosterone and inversely associated with SHBG in post-menopausal women, and positively associated with IGF-1 in both pre- and post-menopausal women.

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