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Premature ovarian insufficiency (POI, defined as age at menopause < 40 years) affects 1%-3% of postmenopausal women. It is positively associated with an increased risk of diabetes mellitus, arterial hypertension, cardiovascular disease, osteoporosis, fractures, cognitive impairment, and depression. Early menopause (EM, defined as age at menopause < 45 years) is also associated with these adverse health consequences, in most cases to the same degree as in POI. Therefore, a unifying term for EM and POI, such as 'premature menopause', may be proposed, using the age threshold of < 45 years. This could provide broader coverage of these women, substantiating the need for prompt administration of menopausal hormone therapy (in this case, 'hormone replacement therapy'). However, the benefits of this approach, which precludes a higher oestrogen dose up to the normal age of menopause, need to be proven in well-designed randomized controlled trials.

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OBJECTIVE: To describe the prevalence of multimorbidity among individuals with premature ovarian insufficiency (POI) and early menopause, in comparison to average age of menopause. DESIGN: Prospective cohort SUBJECTS: This prospective cohort encompassed female postmenopausal individuals from the Canadian Longitudinal Study on Aging (CLSA). The CLSA collected cross-sectional data from 50,000 community-dwelling Canadians aged 45 to 85 between 2010 and 2015. EXPOSURE: The primary exposure was primary ovarian insufficiency (defined by onset of menopause younger than 40 years). Comparators included average age of menopause (age 46 to 55 years), early menopause (40-45 years), late onset menopause (56-65 years), and those who underwent a hysterectomy. MAIN OUTCOME MEASURES: The primary outcome was multimorbidity, which was defined as two or more chronic conditions. The secondary outcome was severe multimorbidity (defined as three or more chronic conditions) as well as frequencies of specific chronic conditions among a comprehensive list of 15 individual conditions. We assessed the association between multimorbidity and age at menopause using logistic regression and odds ratios, with confidence intervals set at 95%. Odds ratios were adjusted for known predictors of multimorbidity, including age, menopause hormone therapy (MHT), education, ethnicity, self-reported loneliness, living alone, BMI, smoking habits, nutritional risk, social participation, and physical activity. RESULTS: A total of 12,339 postmenopausal participants were included, of which 374 (3.0%) experienced POI and 1396 (11.3%) experienced early menopause. The prevalence of multimorbidity was 64.8% and 51.1% among those with POI and early menopause respectively. In contrast, only 43.9% of individuals with average age of menopause (age 46 to 55 years) had multimorbidity. The OR for multimorbidity in the POI population was 2.5 (95% CI 2.0-3.1) in comparison to those who underwent the average age of menopause. This relationship was maintained after adjustment for confounders (aOR 2.0, 95% CI: 1.5-2.5). The prevalence of severe multimorbidity was also double in the POI group in comparison in the average age group (39.2% versus 21.1%). There was significantly increased risk of ischemic heart disease (aOR 2.8, 95% CI: 1.7-4.7), gastric ulcers (aOR 1.6, 95% CI: 1.1-2.3) and osteoporosis (aOR 1.6, 95% CI: 1.2-2.1) in the POI group. CONCLUSIONS: Individuals with POI and early menopause experience increased multimorbidity in comparison to those undergoing menopause at an average age. This trend persists even after adjusting for significant multimorbidity risk factors.

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Background and Objectives: The literature suggests that physiological menopause (MP) seems linked with increased adiposity with a preference for intra-abdominal fat accumulation, greater than what can be attributed only by aging, which could magnify this period's increased cardiovascular risk. Materials and Methods: We retrospectively analyzed two age and body mass index (BMI) propensity-matched subgroups each formed of 90 clinically healthy, 40-60-year-old postmenopausal women, within the first 5 and 5-10 years of MP. The 10-year ASCVD risk was assessed using medical history, anthropometric data, and lipid profile blood tests. The android-to-gynoid (A/G) ratio was computed using Lunar osteodensitometry lumbar spine and hip scans. Results: The A/G ratio was significantly higher for the subgroup evaluated in years 5-10 of MP than in the first 5 years of MP, even after controlling for BMI (1.05 vs. 0.99, p = 0.005). While displaying a significant negative correlation with HDL cholesterol (r = 0.406), the A/G ratio also had positive correlations with systolic blood pressure (BP) values (r = 0.273), triglycerides (r = 0.367), and 10-year ASCVD risk (r = 0.277). After adjusting for smoking, hypertension treatment, and type 2 diabetes, the 10-year ASCVD risk became significantly different for women in the first 5 years (3.28%) compared to those in years 5-10 of MP (3.74%), p = 0.047. Conclusions: In women with similar age and BMI, the A/G ratio appears to vary based on the number of years since menopause onset and correlates with either independent cardiovascular risk parameters like BP, triglycerides, and HDL cholesterol or with composite scores, such as 10-year ASCVD risk.

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Large-scale studies show endometriosis linked to earlier menopause onset. Recent research targeting women with laparoscopically diagnosed endometriosis found an increase in cases of early natural menopause. Furthermore, recent large-scale cohort studies have found a correlation between endometriosis and an increased risk of cardiovascular disease (CVD). Understanding the causality of early menopause, particularly natural menopause, and cardiovascular risks in women with endometriosis could help medical professionals develop effective strategies for early prevention and new therapies. Endometriosis, early menopause, and cardiovascular risks may be linked by primary or secondary mechanisms. Primary mechanisms involve shared pathways that can lead to all morbidities, while secondary occur due to delayed consequences of management strategies. In these large-scale cohort studies, relevant risk and confounding factors, such as oophorectomy, were considered to refine estimates of associations. However, none of the studies considered endometriotic cystectomy, a globally accepted treatment for endometriosis-associated pelvic pain and infertility, as a mediating factor. There is substantial evidence to indicate that endometriotic cystectomy harms ovarian reserve and may lead to early menopause in cases of multiple surgeries or bilateral cases. Early menopause is a well-established risk factor for CVD. To thoroughly examine the link between endometriosis and early menopause, particularly natural menopause, and their connection with cardiovascular risks, it is imperative to consider all the possible factors that may affect the results, such as endometriotic cystectomy. This will enable us to obtain the most accurate and adjusted hazard ratio.

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Introduction: Prakriti (body constitution) is the essential fundamental of Ayurveda. In female physiology, it plays a crucial role in determining the age of menarche and menopause. Recent research has shown that early menopause occurs in tribal women. Vagbhata states that a kapha dosha pradhan prakriti female has a longer menstrual life [i.e., reproductive period] compared to the vata and pitta prakriti females. This study was done to estimate prakriti in females who attain early and premature menopause in the tribal population to provide optimal care for tribal women through primary and whole health systems. Materials and Methods: This cross-sectional questionnaire survey study was carried out in four villages of Nagpur district territory of Eastern Maharashtra, the central zone of India after seeking permission from IEC. A multistage sampling technique was used to select the 80%, and above tribal people, 169 married women who attained early or premature menopause were included. Post-menopausal women were selected for the study, and females with hysterectomy, secondary amenorrhea, and other major illnesses were excluded from the study. Data were collected by survey method with the help of a pre-validated questionnaire. Observation and Result: Out of 169 females 57.98% of females were of vata prakriti, 24.85% of females were of pitta prakriti, and 17.15% of females were of kapha prakriti. The prevalence of early or premature menopause of vata prakriti females is 57.98. Discussion: Vata dosha characteristics such as ruksha, laghu, sheeta, and khara in vata prakriti females lead to early or premature menopause. To avoid early or premature menopause in tribal females, ghee (ghrit) and milk can be included in dietary habits, lifestyle modification, and awareness counseling may prove beneficial. Conclusion: Early or premature menopause is observed largely in vata prakriti females of Nagpur district, Eastern Maharashtra, tribal zone of Central Inda.

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OBJECTIVE: To evaluate the association between subclinical hypothyroidism with early menopause, premature menopause, and last menstrual bleeding before the natural age of menopause. METHODS: This was a cross-sectional study conducted in 643 postmenopausal women aged 40-69 years. Groups were formed according to last menstrual episode: ≥45 [Natural age at menopause], 40-44 and [Early menopause], <40 [Premature menopause], and <45 [last menstrual episode before the natural age of menopause]. The Zulewski scale was applied to identify manifestations related to hypothyroidism and subclinical hypothyroidism, diagnosed with a serum TSH > 4.5 µIU/mL plus T4-free between 0.7 and 1.9 ng/dL. RESULTS: It was found that 24.4% had the last menstrual episode before the natural age of menopause, 18.6% had early menopause, and 5.7% had premature menopause. Subclinical hypothyroidism was diagnosed in 4.5% of patients. Among women with subclinical hypothyroidism, there was a higher frequency of early menopause, premature menopause, and last menstrual episode before the natural age of menopause, than in women without subclinical hypothyroidism (p < 0.05). Paresthesia (50%) and dry skin (40.7%) were the most reported hypothyroidism-related manifestations. Early menopause, premature menopause, and last menstrual episode before the natural age of menopause were associated with subclinical hypothyroidism, OR: 3.37 [95% CI: 1.40-8.10], OR: 4.31 [95% CI: 1.24-14.97], and OR: 3.57 [95% CI: 1.57-8.10], respectively. CONCLUSIONS: The last menstrual episode before the natural age of menopause, early menopause, and premature menopause were significantly associated with a higher chance of subclinical hypothyroidism.

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STUDY QUESTION: What is the frequency of, and predictors for, osteoporosis, fractures, and osteoporosis management (investigation, treatment) in women with premature ovarian insufficiency (POI; menopause <40 years) and early menopause (EM; menopause 40-44years)? SUMMARY ANSWER: Over the 23-year follow-up duration, at a mean age of 68 years, women with POI/EM had higher osteoporosis/fracture risk and prevalence, higher osteoporosis screening and anti-osteoporosis medication use compared to women with usual age menopause; increasing age was predictive of increased risk of osteoporosis/fracture and menopause hormone therapy (MHT) prior to or at study entry (aged 45-50 years) was protective. WHAT IS KNOWN ALREADY: Women with POI/EM have increased risk of osteoporosis and fractures with limited data regarding risk factors for reduced bone density and fractures. Clinical guidelines recommend screening with dual X-ray absorptiometry (DXA) and treatment with MHT for most women with POI/EM to reduce osteoporosis and fracture risk; however, studies indicate gaps in osteoporosis knowledge, guideline uptake, and management adherence by clinicians and women. STUDY DESIGN, SIZE, DURATION: The Australian Longitudinal Study on Women's Health is a prospective longitudinal study of Australian women. This study uses the cohort of women born between 1946 and 1951, surveyed nine times between 1996 and 2019. Data from the Australian administrative health records, including hospital admissions data (fractures, osteoporosis), Medicare Benefits Schedule (DXA), and the Pharmaceutical Benefits Scheme (PBS; MHT, anti-osteoporosis medication, available only from 2002) were linked to survey data. PARTICIPANTS/MATERIALS, SETTING, METHODS: Survey respondents with self-reported age of menopause were included. POI/EM was defined as menopause <45 years. T-test or chi-square were used for comparisons at baseline (P < 0.05 indicates significance). Generalized estimating equations for panel data explored predictors for the longitudinal outcomes of osteoporosis, fractures, DXA rates, MHT use, and anti-osteoporosis medication (in women with osteoporosis/fracture, from Survey 4 onwards only). Univariable regression was performed, and variables retained where P < 0.2, to form the multivariable model, and bootstrapping with 100 repetitions at 95% sampling of the original dataset to ensure robustness of results. MAIN RESULTS AND THE ROLE OF CHANCE: Eight thousand six hundred and three women were included: 610 (7.1%) with POI/EM. Mean (SD) baseline age was 47.6 (1.45) years in the entire cohort and mean (SD) age of menopause was 38.2 (7.95) and 51.3 (3.04) years in women with POI/EM and usual age menopause, respectively (P < 0.001). Over the 23 years, of women with POI/EM, 303 (49.7%) had osteoporosis/fractures, 421 (69.0%) had DXA screening, 474 ever used MHT (77.7%), and 116 (39.1%) of those with osteoporosis/fractures used anti-osteoporosis medication. Of women with usual age menopause, 2929 (36.6%) had osteoporosis/fractures, 4920 (61.6%) had DXA screening, 4014 (50.2%) used MHT, and 964 (33.0%) of those with osteoporosis/fractures used anti-osteoporosis medication. Compared to women with menopause at age ≥45 years and after adjusting for other risk factors, women with POI/EM had increased risk of osteoporosis (odds ratio [OR] 1.37; 95% CI 1.07-1.77), fractures (OR 1.45; 1.15-1.81), DXA testing (OR 1.64; 1.42-1.90), MHT use (OR 6.87; 5.68-8.30), and anti-osteoporosis medication use (OR 1.50; 1.14-1.98). In women with POI/EM women, increasing age was associated with greater risk of osteoporosis/fracture (OR 1.09; 1.08-1.11), and MHT prior to or at study entry (aged 45-50 years), was protective (OR 0.65, 0.45-0.96). In women with POI/EM, age (OR 1.11; 1.10-1.12), fractures (OR 1.80, 1.38-2.34), current smoking (OR 0.60; 0.43-0.86), and inner (OR 0.68; 0.53-0.88) or outer regional (OR 0.63; 0.46-0.87) residential location were associated with DXA screening. In women with POI/EM, increasing age (OR 1.02; 1.01-1.02), and currently consuming alcohol (OR 1.17; 1.06-1.28), was associated with having ever used MHT. In the 299 women with POI/EM and osteoporosis/fractures, only 39.1% ever received treatment with an anti-osteoporosis medication. Increasing age (OR 1.07; 1.04-1.09) and lower BMI (OR 0.95; 0.92-0.98) were associated with greater likelihood of treatment with anti-osteoporosis medication. LIMITATIONS, REASONS FOR CAUTION: Survey data including age of menopause were self-reported by participants; fracture questions were not included in the 2001 survey, and location or level of trauma of self-reported fractures was not asked. Additional risk/protective factors such as vitamin D status, calcium intake, and exercise were not able to be included. Due to sample size, POI and EM were combined for all analyses, and we were unable to differentiate between causes of POI/EM. PBS data were only available from 2004, and hospital admissions data were state-based, with all of Australia were only available from 2007. WIDER IMPLICATIONS OF THE FINDINGS: This study supports previous literature indicating increased risk of osteoporosis and fractures in women with POI, and adds evidence for women with POI/EM, where there was a relative paucity of data. This is the first study to analyse a variety of clinical and demographic risk factors for osteoporosis and fractures in women with POI/EM, as well as analysing investigation and treatment rates. In these women, using MHT prior to or at study entry, aged 45-50 years, was protective for osteoporosis/fractures; however, having ever used MHT was not, highlighting the importance of early treatment with MHT in these women to preserve bone strength. Although women with POI/EM and osteoporosis or fractures were more likely to use anti-osteoporosis medications than those with usual age menopause, overall treatment rates are low at <40%, demonstrating a significant treatment gap that should be addressed to reduce future fracture risk. STUDY FUNDING/COMPETING INTEREST(S): This study was funded by The Australian NHMRC Centre of Research Excellence Women's Health in Reproductive Life (CRE-WHIRL, project number APP1171592). A.R.J. is the recipient of a National Health and Medical Research Council post-graduate research scholarship (grant number 1169192). P.R.E. is supported by a National Health and Medical Research Council grant 1197958. P.R.E. reports grants paid to their institution from Amgen, Sanofi, and Alexion, honoraria from Amgen paid to their institution, and honoraria from Alexion and Kyowa-Kirin. TRIAL REGISTRATION NUMBER: N/A.

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Objective: The prevalence of osteoporosis (OP) and insufficiency fractures in psoriatic arthritis (PsA) remains controversial. The aim of this study was to describe the prevalence of OP and insufficiency fractures in a representative cohort of patients with PsA, and to analyse its association with general risk factors and characteristics of the psoriatic disease in our geographical area. Methods: Multi-centric, descriptive study of patients with PsA. We recorded clinical characteristics, as well as protective and risk factors for OP and insufficiency fractures. Hip and lumbar densitometry and lateral X-ray of the spine were evaluated. Descriptive statistics for OP and risk factors were calculated. The patients with OP were compared to those without by univariate analyses, and results were adjusted by age and sex. The association of OP and fractures with clinical characteristics was analysed by logistic regression. Results: 166 patients (50 men; 116 women) were included. OP was present in 26.5%, and it was more frequent in women and patients above 50 years old. Insufficiency fractures occurred in 5.4% of the total sample. In the logistic regression, OP was associated with age over 50 [OR 3.7; 95% CI (1.2–11.6); p=.02]. No association with clinical parameters was found. The most frequent risk factors among patients with OP were vitamin D insufficiency, sedentary behaviour, low calcium intake, and active smoking. In the logistic regression, OP was associated with early menopause [OR 11.7; 95% CI (1.29–106.0); p=.029] and sedentary behaviour [OR 2.3; 95% CI (1.0–5.2); p=.049]. Conclusions: In patients with PsA, OP is more frequent in women and patients over 50 years old. A sedentary lifestyle and early menopause may add extra risk for OP. Type, duration disease, and treatments are not associated with OP or insufficiency fractures.(AU)

Objetivo: El objetivo de este estudio fue describir la prevalencia de osteoporosis (OP) y fracturas por insuficiencia en una cohorte representativa de pacientes con artritis psoriásica (APs) y analizar su asociación con factores de riesgo generales y características de la enfermedad psoriásica en nuestra área geográfica. Métodos: Estudio multicéntrico y descriptivo de pacientes con APs. Se registraron las características clínicas, así como los factores protectores y de riesgo de OP y fracturas por insuficiencia. Se evaluó la densitometría de cadera y lumbar y la radiografía lateral de columna. Se calcularon las estadísticas descriptivas de la OP y los factores de riesgo. Los pacientes con OP se compararon con los que no la tenían mediante análisis univariantes, y los resultados se ajustaron por edad y sexo. La asociación de la OP y las fracturas con las características clínicas se analizó mediante regresión logística. Resultados: Se incluyeron 166 pacientes (50 hombres; 116 mujeres). La OP estaba presente en el 26,5% y era más frecuente en mujeres y pacientes mayores de 50 años. Se produjeron fracturas por insuficiencia en el 5,4% de la muestra total. En la regresión logística la OP se asoció con la edad superior a 50 años (OR: 3,7; IC 95%: 1,2-11,6; p=0,02), con la menopausia precoz (OR: 11,7; IC 95%: 1,29-106,0; p=0,029) y el comportamiento sedentario (OR: 2,3; IC 95%: 1,0-5,2; p=0,049). Conclusiones: En pacientes con APs la OP es más frecuente en mujeres y en aquellos mayores de 50 años. Un estilo de vida sedentario y una menopausia precoz pueden añadir un riesgo adicional de OP. El tipo, la duración de la enfermedad y los tratamientos no se asocian a las fracturas OP ni a las fracturas por insuficiencia.(AU)

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OBJECTIVES: Early menopause or premature ovarian insufficiency (POI), menopause occurring before age 45 and 40 years respectively, occur at the age when most women are establishing or consolidating their careers. Studies of older postmenopausal women indicate an adverse bidirectional relationship between menopause and work. However, data are lacking regarding the work experiences of women with early menopause or POI. We explored the experiences of women with early menopause or POI in relation to work. STUDY DESIGN: Using maximum variation sampling, 30 women (median age 44 years and 38 years at menopause diagnosis) of diverse backgrounds and menopause causes (16/30 iatrogenic) participated in qualitative interviews to explore experiences of early menopause/POI in the context of their overall lives, work and career. Dual thematic (themes identified across interviews) and thematic narrative (themes identified within individual interviews) analysis was done using NVivo 12 software. MAIN OUTCOME MEASURES: Themes related to work experiences and influencing factors. RESULTS: Two major themes were identified: 'on-the-job' experiences (work performance, bodily presentation and disclosure) and career trajectories (intact and altered). Factors impacting the interaction between work and early menopause/POI included: career (type of work, environment, working conditions), personal (age, socio-economic background, family arrangements, migration history) and menopause experience (spontaneous versus iatrogenic, treatment complexity). CONCLUSIONS: Early menopause/POI has multiple impacts on women's work experiences and career trajectories. As with older postmenopausal women, career and personal factors influence younger women's work experience. However, this research highlights differences associated with menopause occurring at an earlier, often unexpected age compared with menopause at the usual age.

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INTRODUCTION: To investigate the occurrence of previous cancer diagnoses in women suffering from premature ovarian insufficiency (POI) and compare it with the general population, shedding light on the association between cancer, cancer treatments, and POI. MATERIAL AND METHODS: We conducted a nationwide case-control study based on registry data from various sources, including the Social Insurance Institution, Finnish Population Information System, and Finnish Cancer Registry spanning from 1953 to 2018. Our participants comprised all women in Finland who, between 1988 and 2017, received hormone replacement therapy reimbursement for ovarian insufficiency before the age of 40 years (n = 5221). Controls, matched in terms of age and municipality of residence, were selected from the Finnish Population Information System (n = 20 822). Our main exposure variable was a history of cancer diagnosis preceding the diagnosis of POI. We analyzed odds ratios (OR) to compare the prevalence of previous cancers in women with POI with that in controls, stratifying results based on cancer type, age at cancer diagnosis, and the time interval between cancer diagnosis and POI. We also assessed changes in OR for previous cancer diagnoses over the follow-up period. RESULTS: Out of the women diagnosed with POI, 21.9% had previously been diagnosed with cancer, resulting in an elevated OR of 36.5 (95% confidence interval [CI] 30.9 to 43.3) compared with 0.8% of the controls. The risk of developing POI was most pronounced during the first 2 years following a cancer diagnosis, with an OR of 103 (95% CI 74.1 to 144). Importantly, this risk remained elevated even when the time interval between cancer and POI exceeded 10 years, with an OR of 5.40 (95% CI 3.54 to 8.23). CONCLUSIONS: This study reveals that 21.9% of women with POI have a history of cancer, making the prevalence of cancer among these women 27.5 times higher than age-matched controls in the Finnish population. The risk of developing POI is most substantial in the first 2 years following a cancer diagnosis. These findings underscore the role of cancer treatments as an etiological factor for POI and emphasize the importance of recognizing the risk of POI in cancer survivors for early diagnosis and intervention.

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OBJECTIVE: The prevalence of osteoporosis (OP) and insufficiency fractures in psoriatic arthritis (PsA) remains controversial. The aim of this study was to describe the prevalence of OP and insufficiency fractures in a representative cohort of patients with PsA, and to analyse its association with general risk factors and characteristics of the psoriatic disease in our geographical area. METHODS: Multi-centric, descriptive study of patients with PsA. We recorded clinical characteristics, as well as protective and risk factors for OP and insufficiency fractures. Hip and lumbar densitometry and lateral X-ray of the spine were evaluated. Descriptive statistics for OP and risk factors were calculated. The patients with OP were compared to those without by univariate analyses, and results were adjusted by age and sex. The association of OP and fractures with clinical characteristics was analysed by logistic regression. RESULTS: 166 patients (50 men; 116 women) were included. OP was present in 26.5%, and it was more frequent in women and patients above 50 years old. Insufficiency fractures occurred in 5.4% of the total sample. In the logistic regression, OP was associated with age over 50 [OR 3.7; 95% CI (1.2-11.6); p=.02]. No association with clinical parameters was found. The most frequent risk factors among patients with OP were vitamin D insufficiency, sedentary behaviour, low calcium intake, and active smoking. In the logistic regression, OP was associated with early menopause [OR 11.7; 95% CI (1.29-106.0); p=.029] and sedentary behaviour [OR 2.3; 95% CI (1.0-5.2); p=.049]. CONCLUSIONS: In patients with PsA, OP is more frequent in women and patients over 50 years old. A sedentary lifestyle and early menopause may add extra risk for OP. Type, duration disease, and treatments are not associated with OP or insufficiency fractures.

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OBJECTIVE: To investigate the use of menopausal hormone therapy (MHT) in premenopausal women after bilateral oophorectomy. DESIGN: Retrospective register-based cohort study. SETTING: Sweden. POPULATION: Swedish women aged 35-44 years without malignancy who underwent bilateral oophorectomy in 2005-2020 were identified using The Swedish National Quality Register of Gynaecological Surgery (GynOp). METHODS: Data from GynOp were cross-linked with data on dispensed drugs extracted from the Swedish Prescribed Drug Register. MAIN OUTCOME MEASURES: Proportion of women dispensed MHT at least once within 1 year after surgery. Repeated treatment episodes were defined, and the proportion of 'person time' covered by dispensations was analysed. RESULTS: In total, 1231 of all women (n = 1706) were dispensed MHT at some point after surgery, with 1177 women dispensed MHT within 1 year. This proportion increased from 64% in 2005 to 84% in 2019 (p < 0.001). In the total population, 4537 'treatment years' transpired, corresponding to 43% of the mean time covered. In women dispensed MHT within 1 year, the proportion of time covered was 63%. CONCLUSIONS: Only 69% of all women without malignancy of any kind who underwent bilateral oophorectomy were dispensed MHT within 1 year after surgery, and the duration of treatment was limited. It is important to study further the reasons behind the low dispensation rate in this group to increase adherence to current treatment guidelines, improve quality of life, and avoid increased morbidity and mortality.

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Premature ovarian insufficiency (POI) is a condition in which there is a decline in ovarian function in women who are younger than 40 years resulting in a hypo-oestrogenic state with elevated gonadotrophins and oligomenorrhoea/amenorrhoea. This leads to short term complications of menopausal symptoms and long-term effects on bone and cardiovascular health, cognition as well as the impact of reduced fertility and sexual function associated with this condition. It is managed by sex steroid replacement either with HRT or combined hormonal contraception until the age of natural menopause (51) and this can provide a beneficial role with both symptom control and minimising the long-term adverse effects associated with this condition. Women who undergo a menopause between 40 and 45 years are deemed to have an "early menopause". The limited data available for this group suggest that they also have an increased morbidity if not adequately treated with hormone therapy. As such, women who have an early menopause should be managed in a similar way to those with POI, with the recommendation that they should take HRT at least until the natural age of menopause. This is the same for induced menopause that is caused by medical or surgical treatment that impacts the ovaries. It is important to ensure early diagnosis and access to specialist care to help support and manage these patients to reduce the symptoms and risks of long-term complications. This review looks at the diagnosis, causes, short and long-term complications and management of POI, early and induced menopause.

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Background and Aim: Little is known about whether early menopause in Chinese ethnicity is associated with acute myocardial infarction (AMI). We aimed to determine whether self-reported early menopause (either surgical or natural menopause at an age <50 year) was associated with first AMI in Chinese women. Methods: The study population was from the INTERHEART China Study, part of the INTERHEART global study. INTERHEART global study was a standardized case-control study that was designed to evaluate the risk factors for first AMI among 52 countries. Data for demographic factors, education, income, and cardiovascular risk factors were obtained by structured questionnaires. A standard set of questions that inquired about menstrual history was included in the interview. Results: Of the 1,771 Chinese women, 1,563 (88.3%) reported either natural or surgical menopause. In univariate logistic regression model, women with early menopause had higher risk of AMI (odds ratio [OR]: 1.51; 95% confidence interval [CI]: 1.23-1.87). After controlling for age, birth control measures, type of menopause, and other traditional risk factors (including waist/hip ratio, lifestyle factors, history of hypertension and diabetes, psychosocial factors, and apolipoprotein B [ApoB]/A1 [ApoA1]), the risk for AMI remained (OR: 1.36; 95% CI: 1.03-1.79). The population attributable risk for AMI in women with early menopause at <50 years was 10.1% (95% CI: 4.0-20.0) compared with women who had menopause at ≥50 years. Conclusion: Early menopause is associated with increased risk of AMI in Chinese women, independent of other traditional coronary heart disease risk factors.

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Estrogen depletion following menopause predisposes to increased risk of cardiovascular disease (CVD), mainly due to ischemic heart disease. This is mostly evident in cases with premature menopause. The pathophysiological basis for this atherosclerotic process is the accumulation of several risk factors, such as abdominal obesity, atherogenic dyslipidemia, insulin resistance and arterial hypertension. The presence of vasomotor symptoms may further augment this risk, especially in women younger than 60 years. Menopausal hormone therapy (MHT) exerts many beneficial effects on lipid profile and glucose homeostasis as well as direct arterial effects, and may reduce CVD risk if initiated promptly (i.e.,<60 years or within ten years of the final menstrual period). Transdermal estradiol and micronized progesterone or dydrogesterone are the safest regimens in terms of venous thromboembolic events (VTE) and breast cancer risk. In any case, an individualized approach, taking into account the patient's total CVD, VTE and breast cancer risk, is recommended.

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INTRODUCTION: Endometriosis is a common disabling pain condition in women of childbearing age, frequently showing familial clustering. Nevertheless, little is known about whether familial predispositions influence its severity or presentation. In this study, we investigate disease characteristics in endometriosis patients with a family history (FH) for endometriosis or the comorbidities migraine, depression and early menopause (EMP). MATERIALS AND METHODS: We performed an observational case-control study enrolling women with histologically confirmed endometriosis in a tertiary center. Based on surgical findings, patient records and phone interviews, we examined the relations between a FH for endometriosis, migraine, depression or EMP and endometriotic signs and symptoms, such as response to combined hormonal contraceptives (CHC) and analgesics, disease localization, infiltration depth, Enzian- and rASRM-scores. RESULTS: A positive FH for endometriosis, migraine, depression or EMP was reported by 10.2 %, 33.4 %, 32.6 % and 9.9 % of the 344 patients. A positive FH of endometriosis was associated with an increased risk for high rASRM-scores (rASRM 3 + 4: OR 2.74 (95 % CI 1.16-6.49), p = 0.017) and the presence of endometriomas (OR 2.70 (1.22-5.95), p = 0.011). A positive FH for migraine was associated with less response of endometriosis symptoms to CHC (OR 0.469 (0.27-0.82) p = 0.025). Depression in the family was linked to less severe rASRM-scores (rASRM 3 + 4: OR 0.63 (0.39-0.99), p = 0.046) and less endometriomas (OR 0.58 (0.67-0.92), p = 0.02), but increased the risk of both migraine (OR 1.66 (1.01-2.73), p = 0.043) and depression (OR 3.04 (1.89-4.89), p < 0.001) while showing a better response to CHC (OR 2.0 (1.15-3.48, p < 0.001). Patients with EMP in their family reported more current endometriosis symptoms at present (OR 3.72 (1.67-8.30), p = 0.001), more dysmenorrhea (OR 2.13 (1.04-4.35), p = 0.037), more frequent severe dysmenorrhea (OR 2.32 (1.14-4.74), p = 0.019) and suffered significantly more often > 5 days of non-cyclic pain (OR 3.58 (1.72-7.44), p < 0.001). CONCLUSIONS: Around 30% reported a positive FH for migraine or depression. Patients with a positive FH for endometriosis, migraine, depression or EMP differ in symptoms and surgical findings when compared to controls. While a FH for endometriosis is associated with higher rASRM scores and more endometriomas, women with a FH for depression had lower rASRM scores and less endometriomas while responding better to CHC. In contrast, women with a FH for migraine showed less response to CHC.

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Background Mortality from cardiovascular diseases in Asian populations is considerable. Menopause is a risk-enhancing factor for cardiovascular disease, but it is unclear whether menopause is an independent risk factor for cardiovascular disease and mortality in Asian women. Methods and Results A total of 1 159 405 postmenopausal women, who had participated in the health examinations of the Korean National Health Insurance Service in 2009, were analyzed, and their reproductive histories were taken. A multivariable Cox proportional hazard model assessed the hazard ratios (HRs) of myocardial infarction (MI), ischemic stroke, and all-cause mortality, according to the history of premature menopause and age at menopause. After an average 10-year follow-up, there were 31 606, 45 052, and 77 680 new cases of MI, ischemic stroke, and all-cause mortality, respectively. The women with premature menopause exhibited increased risks of MI (HR, 1.40 [95% CI, 1.31-1.50]), ischemic stroke (HR, 1.24 [95% CI, 1.17-1.31]), and all-cause mortality (HR, 1.19 [95% CI, 1.14-1.24]) when compared with women with menopause aged ≥50 years. The highest risk was evident with menopause between the ages of 30 and 34 years (HR for MI, 1.52 [95% CI, 1.30-1.78]; HR for ischemic stroke, 1.29 [95% CI, 1.12-1.48]; HR for all-cause mortality, 1.33 [95% CI, 1.20-1.47]) when compared with women with menopause aged ≥50 years. Conclusions Earlier age at menopause was associated with increased risks for MI, ischemic stroke, and all-cause mortality. Future guidelines and risk assessment tools should consider menopause as an independent risk factor of cardiovascular disease in Korean women.

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Menopause marks the end of the reproductive phase of life. Based on epidemiological studies, abnormal age at natural menopause (ANM) is thought to contribute to a number of adverse outcomes, such as osteoporosis, cardiovascular disease, and cancer. However, the causality of these associations remains unclear. A powerful epidemiological method known as Mendelian randomization (MR) can be used to clarify the causality between ANM and other diseases or traits. The present review describes MR studies that included ANM as an exposure, outcome and mediator. The findings of MR analyses on ANM have revealed that higher body mass index, poor educational level, early age at menarche, early age at first live birth, early age at first sexual intercourse, and autoimmune thyroid disease appear to be involved in early ANM etiology. The etiology of late ANM appears to be influenced by higher free thyroxine 4 and methylene tetrahydrofolate reductase gene mutations. Furthermore, early ANM has been found to be causally associated with an increased risk of osteoporosis, fracture, type 2 diabetes mellitus, glycosylated hemoglobin, and the homeostasis model of insulin resistance level. In addition, late ANM has been found to be causally associated with an increased systolic blood pressure, higher risk of breast cancer, endometrial cancer, endometrioid ovarian carcinoma, lung cancer, longevity, airflow obstruction, and lower risk of Parkinson's disease. ANM is also a mediator for breast cancer caused by birth weight and childhood body size. However, due to the different instrumental variables used, some results of studies are inconsistent. Future studies with more valid genetic variants are needed for traits with discrepancies between MRs or between MR and other types of epidemiological studies.

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BACKGROUND: In premature ovarian insufficiency, the cessation of menstruation, and cessation of ovarian function occurs before the age of 40, and this phenomenon is associated with many complications and problems for women. Since several factors can affect this situation, this study was conducted to determine the relationship between fertility history, and premature ovarian failure. METHODS: This cross-sectional study was conducted on the data of the first phase of cohort study, which was a sample of 10,000 people from an Iranian adult population (age: 35-70 years). 1276 women were included who naturally experienced menopause from this population. They were separated into three groups based on the age of menopause: premature ovarian failure for those who reached menopause before the age of 40, early menopause for those who reached menopause between the ages of 40 and 45, and natural menopause for those who reached menopause at or after the age of 45. The demographic and fertility characteristics of two groups of women, one with premature ovarian failure and the other with early menopause, were compared with a group of women experiencing normal menopause. The comparison was based on frequency and percentage. Moreover, the odds ratio (OR) of these two groups compared to normal group was crudely calculated, and adjusted based on age at the time of the interview using a logistic regression model. SPSS 23 software was used to fit models and calculations. RESULTS: The prevalence of premature ovarian failure was 3%. The likelihood of premature ovarian failure decreases as the number of live births rises. The risk is considerably higher for births ranging from zero to three children compared to those with more than four. Increased duration of breastfeeding is associated to a reduced risk of premature ovarian failure compared to the spontaneous occurrence (OR = 0.98, 95% CI (0.97, 0.99)). This relationship is maintained even after adjusting for age (OR = 0.98, 95% CI (0.97, 0.99). CONCLUSION: Based on the results of present study, it can be concluded that the factor of the number of births, and the duration of breastfeeding affect reducing the occurrence of POI, therefore, in health and treatment programs and policies, encouragement to have children, which is now part of the policies population of Iran, and the importance, and benefits of breastfeeding for mother and baby should be emphasized more.

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Young women receiving systemic treatments for breast cancer are at risk for developing primary ovarian insufficiency and early menopause. Abrupt drops in estrogen levels often induce distressing vasomotor and vulvovaginal sym.

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