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Age at menarche

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https://www.readbyqxmd.com/read/28637226/epidemiologic-risk-factors-for-in-situ-and-invasive-breast-cancer-among-postmenopausal-women-in-the-nih-aarp-diet-and-health-study
#1
Maeve Mullooly, Zeina G Khodr, Cher M Dallal, Sarah J Nyante, Mark E Sherman, Roni Falk, Linda M Liao, Jeffrey Love, Louise A Brinton, Gretchen L Gierach
Comparing risk factor associations between invasive breast cancers and possible precursors may further understanding of factors related to initiation versus progression. Accordingly, among 190,325 postmenopausal participants in the National Institutes of Health-AARP Diet and Health Study (1995-2011), we compared risk factor associations between incident ductal carcinoma in situ (DCIS: n = 1,453) and invasive ductal carcinomas (n = 7,525) and lobular carcinoma in situ (LCIS: n = 186) and invasive lobular carcinomas (n = 1,191)...
June 16, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28632729/radiation-associated-breast-cancer-and-gonadal-hormone-exposure-a-report-from-the-childhood-cancer-survivor-study
#2
Chaya S Moskowitz, Joanne F Chou, Charles A Sklar, Dana Barnea, Cécile M Ronckers, Danielle Novetsky Friedman, Joseph P Neglia, Lucie Turcotte, Rebecca M Howell, Tara O Henderson, Gregory T Armstrong, Wendy M Leisenring, Leslie L Robison, Flora E van Leeuwen, Malcolm C Pike, Kevin C Oeffinger
BACKGROUND: The relationship between hormone exposure and breast cancer risk in women treated with chest radiotherapy for childhood cancer is uncertain. METHODS: Participants included 1108 females from the Childhood Cancer Survivor Study who were diagnosed with childhood cancer 1970-1986, treated with chest radiotherapy, and survived to ages ⩾20 years. Hazard ratios (HRs) and 95% confidence intervals (CIs) from Cox models adjusted for chest radiation field, delivered dose, anthracycline exposure, and age at childhood cancer estimated risk...
June 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28624884/age-at-menarche-and-lung-function-a-mendelian-randomization-study
#3
Dipender Gill, Nuala A Sheehan, Matthias Wielscher, Nick Shrine, Andre F S Amaral, John R Thompson, Raquel Granell, Bénédicte Leynaert, Francisco Gómez Real, Ian P Hall, Martin D Tobin, Juha Auvinen, Susan M Ring, Marjo-Riitta Jarvelin, Louise V Wain, John Henderson, Deborah Jarvis, Cosetta Minelli
A trend towards earlier menarche in women has been associated with childhood factors (e.g. obesity) and hypothesised environmental exposures (e.g. endocrine disruptors present in household products). Observational evidence has shown detrimental effects of early menarche on various health outcomes including adult lung function, but these might represent spurious associations due to confounding. To address this we used Mendelian randomization where genetic variants are used as proxies for age at menarche, since genetic associations are not affected by classical confounding...
June 17, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28619461/predictability-of-brca1-2-mutation-status-in-patients-with-ovarian-cancer-how-to-select-women-for-genetic-testing-in-middle-income-countries
#4
Natalia Teixeira, Simone Maistro, Maria Del Pilar Estevez Diz, Marian J Mourits, Jan C Oosterwijk, Maria Aparecida Koike Folgueira, Geertruida H de Bock
OBJECTIVES: To evaluate the accuracy of algorithms for predicting BRCA1/2 germ-line mutation carrier probability, and to identify factors that could improve their performance among Brazilian women with ovarian cancer (OC). STUDY DESIGN: In this cross-sectional study, we enrolled patients (unselected for family history of cancer) undergoing treatment or follow-up for OC in a single centre in Brazil. Clinical and demographic data, including family history of cancer, were obtained...
June 4, 2017: Maturitas
https://www.readbyqxmd.com/read/28610407/lack-of-hpv-in-benign-and-malignant-epithelial-ovarian-tumors-in-iran
#5
Farah Farzaneh, Seyed Alireza Nadji, Donya Khosravi, Maryam Sadat Hosseini, Mohammad Hashemi Bahremani, Mohammad Chehrazi, Ghazal Bagheri, Afsaneh Sigaroodi, Zahra Haghighatian
Background: Ovarian epithelial tumors one of the most common gynecological neoplasms; we here evaluated the presence of HPV in benign and malignant examples. Methods: In this cross-sectional study the records of 105 patients with epithelial ovarian tumors (benign and malignant) referred to Imam Hossein University Hospital from 2012 to 2015 were evaluated along with assessment of the presence of the HPV infection using PCR. Results: Among 105 patients, comprising 26 (24.8%) with malignant and 79 (75.2%) with benign lesions, the factors found to impact on malignancy were age at diagnosis, age at first pregnancy, number of pregnancies and hormonal status...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28606230/-a-survey-of-pubertal-development-in-children-born-with-assisted-reproductive-technology
#6
Zi-Yuan Liu, Xin-Li Wang, Tong-Yan Han, Yun-Pu Cui, Xue-Mei Wang, Xiao-Mei Tong, Yi Song, Hai-Jun Wang, Song Li
OBJECTIVE: To investigate the status of pubertal development in children born with assisted reproductive technology (ART). METHODS: A retrospective analysis was performed on the pubertal development data of children born with ART in Peking University Third Hospital from 1994 to 2003 (ART group). The data in the cross-sectional study "Reports on the Physical Fitness and Health Research of Chinese School Students in 2010" were used as a control. The age at menarche and the age at spermarche were compared between the two groups...
June 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28606030/assessing-breast-cancer-risk-estimates-based-on-the-gail-model-and-its-predictors-in-qatari-women
#7
Abdulbari Bener, Funda Çatan, Hanadi R El Ayoubi, Ahmet Acar, Wanis H Ibrahim
BACKGROUND: The Gail model is the most widely used breast cancer risk assessment tool. An accurate assessment of individual's breast cancer risk is very important for prevention of the disease and for the health care providers to make decision on taking chemoprevention for high-risk women in clinical practice in Qatar. AIM: To assess the breast cancer risk among Arab women population in Qatar using the Gail model and provide a global comparison of risk assessment...
July 2017: Journal of Primary Care & Community Health
https://www.readbyqxmd.com/read/28605451/age-at-menarche-and-incidence-of-diabetes-a-prospective-study-of-300-000-women-in-china
#8
Ling Yang, Liming Li, Sanne A E Peters, Robert Clarke, Yu Guo, Yiping Chen, Zheng Bian, Paul Sherliker, Jiyuan Yin, Zhenzhu Tang, Chunmei Wang, Xiaohuan Wang, Libo Zhang, Mark Woodward, Zhengming Chen
Previous studies of mostly Western populations have reported inconsistent associations between age at menarche and risk of diabetes. We examined such associations among Chinese women who tend to have later menarche age than women in West. China Kadoorie Biobank recruited 302,632 women aged 30-79 years from 10 areas across China in 2004-8, recording 5,391 incident cases of diabetes during 7-years follow-up among 270,345 women without diabetes, cardiovascular disease or cancer at baseline. Cox regression models yielded adjusted hazard ratios (HRs) for incident diabetes associated with age at menarche...
June 9, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28603351/the-effect-of-balance-taping-for-prevention-of-menstrual-pain-in-female-middle-school-students
#9
Keun-Sang Yum, Sung-Goo Kang, Hyun-Jin Han
[Purpose] The age at menarche in Korean women has been declining sharply. However, for the students who are just beginning to menstruate, taking pain medication might become a long-term habit continuing until adulthood. Therefore, this study investigated whether balance taping would be more helpful than medication in relieving the pain. [Subjects and Methods] Subjects of this study included 125 female students. The participants were assigned to the balance taping group, the control group, and the medication group...
May 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28601624/age-at-menarche-and-cardiovascular-risk-factors-using-mendelian-randomization-in-the-guangzhou-biobank-cohort-study
#10
Shiu Lun Au Yeung, Chaoqiang Jiang, Kar Keung Cheng, Lin Xu, Weisen Zhang, Tai Hing Lam, Gabriel Matthew Leung, C Mary Schooling
Observational studies show earlier age at menarche associated with higher risk of cardiovascular disease although these studies could be confounded by childhood obesity or childhood socioeconomic position. We hypothesized that earlier age at menarche is associated with poorer cardiovascular risk factors using a Mendelian randomization design. We conducted a Mendelian randomization study in a large Southern Chinese cohort, the Guangzhou Biobank Cohort Study (n=12,279), to clarify the causal role of menarche in cardiovascular disease risk factors including blood pressure, lipids, fasting glucose, adiposity and type 2 diabetes...
June 7, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28599382/menarche-as-a-predictor-of-risk-taking-behavior-in-a-sample-of-hungarian-adolescent-girls
#11
Andrea Varga-Tóth, Ágnes Maróti-Nagy, Gábor Németh, Edit Paulik
Background The age at the time of the first sexual intercourse is declining, and the prevalence of smoking is increasing in adolescent girls in developed countries. Objective To assess the relationship between menarche and tobacco smoking and sexual activity in adolescent girls. Subjects Girls between 14 and 18 years, attending primary or secondary school. Methods Socio-demographic characteristics (age, living place, educational level of parents, self-estimated financial background), onset and parameters of periods, and risk behaviors (smoking, sexual activity) were measured by self-administered questionnaires...
May 24, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28595647/pubertal-development-in-girls-by-breast-cancer-family-history-the-legacy-girls-cohort
#12
Mary Beth Terry, Theresa H M Keegan, Lauren C Houghton, Mandy Goldberg, Irene L Andrulis, Mary B Daly, Saundra S Buys, Ying Wei, Alice S Whittemore, Angeline Protacio, Angela R Bradbury, Wendy K Chung, Julia A Knight, Esther M John
BACKGROUND: Pubertal milestones, such as onset of breast development and menstruation, play an important role in breast cancer etiology. It is unclear if these milestones are different in girls with a first- or second-degree breast cancer family history (BCFH). METHODS: In the LEGACY Girls Study (n = 1040), we examined whether three mother/guardian-reported pubertal milestones (having reached Tanner Stage 2 or higher (T2+) for breast and pubic hair development, and having started menstruation) differed by BCFH...
June 8, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28593921/hyperandrogenism-in-adolescent-girls-relationship-with-the-somatotrophic-axis
#13
María Isabel Hernandez, Patricia López, Ximena Gaete, Claudio Villarroel, Gabriel Cavada, Alejandra Avila, German Iñiguez, Fernando Cassorla
BACKGROUND: During puberty there is a physiologic increase in adrenal and ovarian androgens. It has been suggested that the somatotrophic axis may be related to the development of hyperandrogenism and anovulation in non-obese adult women with polycystic ovarian syndrome (PCOS). The objective of the study was to investigate whether ovarian androgen secretion in young postmenarchal girls is related to the function of their somatotropic axis. METHODS: This was a cross-sectional study of adolescent girls...
May 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28591798/associations-among-body-size-across-the-life-course-adult-height-and-endometriosis
#14
L V Farland, S A Missmer, A Bijon, G Gusto, A Gelot, F Clavel-Chapelon, S Mesrine, M C Boutron-Ruault, M Kvaskoff
STUDY QUESTION: Are body size across the life course and adult height associated with endometriosis? SUMMARY ANSWER: Endometriosis is associated with lean body size during childhood, adolescence and adulthood; tall total adult height; and tall sitting height. WHAT IS KNOWN ALREADY: The literature suggests that both adult body size and height are associated with endometriosis risk, but few studies have investigated the role of body size across the life course...
June 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28591132/early-menarche-a-systematic-review-of-its-effect-on-sexual-and-reproductive-health-in-low-and-middle-income-countries
#15
Mobolaji Ibitoye, Cecilia Choi, Hina Tai, Grace Lee, Marni Sommer
BACKGROUND: Adolescent girls aged 15-19 bear a disproportionate burden of negative sexual and reproductive health outcomes in low- and middle-income countries. Research from several high-income countries suggests that early age at menarche is an important determinant of sexual and reproductive health. We conducted this systematic review to better understand whether and how early menarche is associated with various negative sexual and reproductive health outcomes in low- and middle-income countries and the implications of such associations...
2017: PloS One
https://www.readbyqxmd.com/read/28587648/timing-of-menarche-in-norwegian-girls-associations-with-body-mass-index-waist-circumference-and-skinfold-thickness
#16
Heiko Bratke, Ingvild Særvold Bruserud, Bente Brannsether, Jörg Aßmus, Robert Bjerknes, Mathieu Roelants, Pétur B Júlíusson
BACKGROUND: Research studies show conflicting results regarding the association between menarche and body weight. The purpose of the present study was to investigate if anthropometric indicators of body composition, body mass index (BMI), waist circumference (WC), triceps (TSF) and subscapular skinfold (SSF) thicknesses, were differentially associated with age at menarche in Norwegian girls. METHODS: The association between menarche and BMI, WC, TSF and SSF was investigated in 1481 girls aged 8-15...
June 6, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28581683/the-effect-of-early-pregnancy-on-the-formation-of-obstetric-fistula
#17
Andrew Browning, Frederick Mbise, Phil Foden
OBJECTIVE: To assess the effect of early pregnancy on obstetric fistula. METHODS: A prospective observational study was conducted among patients with obstetric fistula caused by a long obstructed labor who presented at Selian Lutheran Hospital, Tanzania, or Kitovu Hospital, Uganda, between January 1, 2015, and January 31, 2016. Demographic and clinical variables were evaluated. RESULTS: Among 270 patients, 162 (60.0%) experienced their first pregnancy up to 2 years after menarche (early group) and 108 (40...
June 5, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28579181/estrogen-replacement-reduces-risk-and-increases-survival-times-of-women-with-hepatocellular-carcinoma
#18
Manal M Hassan, Gehan Botrus, Reham Abdel-Wahab, Robert A Wolff, Donghui Li, David Tweardy, Alexandria T Phan, Ernest Hawk, Milind Javle, Ju-Seog Lee, Harrys A Torres, Asif Rashid, Renato Lenzi, Hesham M Hassabo, Yasmin Abaza, Ahmed S Shalaby, Sahin Lacin, Jeffrey Morris, Yehuda Z Patt, Christopher I Amos, Saira A Khaderi, John A Goss, Prasun K Jalal, Ahmed O Kaseb
BACKGROUND & AIMS: Environmental factors have been identified that affect risk of hepatocellular carcinoma (HCC), but little is known about the effects of sex hormones on liver cancer development or outcome. We investigated whether menopause hormone therapy (MHT) affects risk, age at onset, or outcome of HCC. METHODS: We performed a case-control study of 234 female patients treated for HCC at a tertiary medical center and with 282 healthy women (controls), from January 1, 2004 through May 31, 2015...
June 1, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28562261/early-puberty-friendship-group-characteristics-and-dating-abuse-in-us-girls
#19
Frances R Chen, Emily F Rothman, Sara R Jaffee
OBJECTIVES: The current study aimed to investigate the relationship between advanced pubertal development and adolescent dating abuse (ADA) and to test if this relationship is moderated by friendship group characteristics in a nationally representative sample of US girls. METHODS: Data were drawn from wave 1 and 2 (1995-1996) of the National Longitudinal Study of Adolescent to Adult Health. The sample included 3870 girls aged 13 to 17 years, all of whom were in romantic and/or nonromantic sexual relationships...
May 8, 2017: Pediatrics
https://www.readbyqxmd.com/read/28559048/endometriosis-in-adolescents-and-young-girls-report-a-series-of-85-cases
#20
Michail Matalliotakis, George N Goulielmos, Charoula Matalliotaki, Alexandra Trivli, IoannisMatalliotakis, Aydin Arici
OBJECTIVE: Endometriosis is a common benign and chronic gynecologic disorder that is related to the presence of endometrial glands and stroma outside of their normal location. The aim of this retrospective study was to evaluate endometriosis in adolescent and young girls and further to review the menstrual, reproductive characteristics and risk factors including the obstructive mullerian anomalies and family history. STUDY DESIGN: We review the medical records of adolescent and young women with endometriosis from two different countries...
May 27, 2017: Journal of Pediatric and Adolescent Gynecology
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