Few studies have addressed the possible association between age at menarche and multiple sclerosis (MS), and results are conflicting. We studied this issue in a large prospective cohort study. The study cohort comprised 77,330 women included in the Danish National Birth Cohort (1996-2002). Information on menarcheal age was ascertained at the first interview, which took place in the 16th week of pregnancy. Women were followed for MS from the first interview to December 31, 2011. Associations between age at menarche and risk of MS were evaluated with hazard ratios and 95% confidence intervals using Cox proportional hazards regression models. Overall, 226 women developed MS during an average follow-up period of 11.7 years. Age at menarche among women with MS was generally lower than that among women without MS (Wilcoxon rank-sum test; P = 0.002). We observed an inverse association between age at menarche and MS risk. For each 1-year increase in age at menarche, risk of MS was reduced by 13% (hazard ratio = 0.87, 95% confidence interval: 0.79, 0.96). Early age at menarche appears to be associated with an increased risk of MS. The mechanisms behind this association remain to be established.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/aje/kww160 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact of Sports on Female Growth and Pubertal Development: A Cohort Study.
Cureus
December 2024
Department of Sports Medicine, Portuguese Rugby Federation, Lisbon, PRT.
Introduction The participation of women in sports is increasing, and the rising training demands may impact growth and pubertal development. High-intensity sports are often linked to delayed growth and bone maturation due to energy deficits and intense regimens. These factors may increase the risk of injury and musculoskeletal issues.
View Article and Find Full Text PDFOestrogen and progesterone fluctuate cyclically in women throughout their adult lives. Although these hormones cross the blood-retinal barrier and bind to intraocular receptors, their effects remain unclear. We present the first review to date on associations between posterior pole structures-specifically the macula, choroid, and optic disc-and both the menstrual cycle and post-menopausal period, utilising multimodal imaging techniques in healthy adult non-pregnant women.
View Article and Find Full Text PDFAssociation between hormone therapy and glioma risk in US women: a cancer screening trial.
Menopause
January 2025
From the Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, China.
Objective: Gliomas are the most common primary brain tumors in adults, and the role of hormone therapy (HT) in their development remains controversial. This study with a cohort design aimed to investigate the association between HT use and glioma risk using the data from the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial.
Methods: We analyzed data from 75,335 women, aged 50-78, who were enrolled between 1993 and 2001.
The patterns of presentation, management and outcomes of breast cancer patients at a tertiary health facility in Sierra Leone.
BMC Cancer
January 2025
Oncology Unit, Surgery Department, University College Hospital, Ibadan, Nigeria.
Background: Breast cancer is the leading cause of cancer among women globally and the most common cancer among women in Sierra Leone. This study aimed to evaluate the patterns of clinical presentation, management and outcomes among breast cancer patients who presented at the Connaught Teaching Hospital Complex in Sierra Leone.
Method: A retrospective, cross-sectional study was conducted at the specialist outpatient clinic at the Connaught Hospital.
Study Question: Does endometriosis affect the mental health of women using oral contraceptives?
Summary Answer: Among oral contraceptive users, women with endometriosis have a higher risk of depression compared to those without endometriosis, although the absolute risk increase is small.
What Is Known Already: Previous studies have suggested a potential link between endometriosis and mental health issues, but the impact of endometriosis on depression among oral contraceptive users remains unclear.
Study Design, Size, Duration: A secondary pooled cohort study utilizing data from two longitudinal patient-centric studies (INAS-VIPOS and PRO-E2) was conducted across 11 European countries, Colombia and Australia.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!