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Int J Hyg Environ Health
January 2025
NHC Key Lab of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies, School of Public Health, Fudan University, Shanghai, 200237, China. Electronic address:
Background: Direct evidence linking ambient temperature to human fecundity is sparse. We aimed to evaluate the potential impact of ambient temperature on time to pregnancy (TTP) and identify the optimal temperature range for initiating conception attempts.
Methods: Our analysis included 576 927 couples from the Chinese National Free Preconception Health Examination Project (NFPHEP) in Yunnan Province, with a one-year follow-up post-enrollment.
Menopause
January 2025
National Institute of Health, Cheongju, Republic of Korea.
Objectives: We examined the health-related quality of life (HRQoL) during menopause transition (MT) among middle-aged Korean women.
Methods: This cross-sectional study comprised 2,290 middle-aged women who completed web-based questionnaires between 2020 and 2022. Based on self-reported menstrual cycle patterns, menopause status was classified as premenopausal, early or late transition, or postmenopausal.
J Nurs Res
February 2025
Nursing Department, Nursing and Occupational Therapy College, and Health and Care Research Group (GISyC), Universidad de Extremadura, Cáceres, Spain.
Background: Menstruation is a physiological process that may be accompanied by pain, headache, edema, emotional changes, and other symptoms, all of which affect quality of life. Although the results of some studies indicate lifestyle habits can affect the menstrual cycle and associated symptoms, few have investigated this issue, and even fewer have explored the impact of these symptoms on quality of life, in Spanish women.
Purpose: The objectives of this study were to determine the prevalence of dysmenorrhea and premenstrual syndrome (PMS) among students at a Spanish university, assess the impact of these conditions on quality of life, and analyze the relationship among lifestyle habits, dysmenorrhea, and PMS.
Contraception
January 2025
MSI Reproductive Choices, London, England, United Kingdom.
Objective: We sought to develop consensus recommendations for measurement and analysis of data on contraceptive-induced menstrual changes (CIMCs) in contraceptive clinical trials. We built upon previous standardization efforts over the last 50 years and prioritized input from a variety of global experts and current regulatory authority guidance on patient-reported outcomes.
Study Design: We completed a formal consensus-building process with an interdisciplinary group of 57 experts from 30 organizations and 14 countries in five global regions who work across academia, nonprofit research organizations, the pharmaceutical industry, and funding agencies.
Sci Rep
January 2025
Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Menstrual pain affects women's quality of life and productivity, yet objective molecular markers for its severity have not been established owing to the variability in blood levels and chemical properties of potential markers such as plasma steroid hormones, lipid mediators, and hydrophilic metabolites. To address this, we conducted a metabolomics study using five analytical methods to identify biomarkers that differentiate menstrual pain severity. This study included 20 women, divided into mild (N = 12) and severe (N = 8) pain groups based on their numerical pain rating scale.
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