Siri E. Håberg

OBJECTIVE: The aim of this study was to explore the association between frequency of intercourse in the four weeks leading up to conception and fecundability among women trying to conceive in a pregnancy cohort. METHODS: The Norwegian Moth…

OBJECTIVE: To study the relationship between conception by assisted reproductive technology (ART) and risk of endometriosis/adenomyosis in female offspring. DESIGN: National registry-based cohort study. SUBJECTS: We studied 449,611 female…

Genetic selection occurs at multiple stages before and during pregnancy. While parental genomes influence the probability of fertilization, the fetal genome, once established, plays a critical role in early fetal survival. However, when est…

This study evaluated the relationship between Covid-19 vaccination and menstrual bleeding disturbances using a large national registry linkage including 666,467 women between 20 and 40 years of age residing in Norway on January 1st, 2019. I…

STUDY QUESTION: Is age at menarche associated with fecundability? SUMMARY ANSWER: Both early (15 years) menarche is associated with decreased fecundability. WHAT IS KNOWN ALREADY: Previous studies on age at menarche and fecundability have…

IMPORTANCE: The use of assisted reproductive technologies (ARTs) is steadily increasing worldwide. The outcomes associated with treatment for an individual's long-term health, including risk of cardiovascular disease (CVD), remain largely u…

OBJECTIVES: To investigate whether risks of stillbirth and neonatal death differ after fresh embryo transfers (fresh-ETs) and frozen embryo transfers (frozen-ETs) compared with singletons conceived without medical assistance. DESIGN: A pop…

STUDY QUESTION: Is the use of ART, a proxy for infertility, associated with epigenetic age acceleration? SUMMARY ANSWER: The epigenetic age acceleration measured by Dunedin Pace of Aging methylation (DunedinPoAm) differed significantly bet…

STUDY QUESTION: Is fecundability associated with miscarriage history and future miscarriage risk? SUMMARY ANSWER: Prior miscarriage was associated with lower fecundability, and participants with a history of subfertility (time-to-pregnancy…

BACKGROUND: Increased risk of miscarriage has been reported for women with specific chronic health conditions. A broader investigation of chronic diseases and miscarriage risk may uncover patterns across categories of illness. The objective…

BACKGROUND: Some psychiatric disorders have been associated with increased risk of miscarriage. However, there is a lack of studies considering a broader spectrum of psychiatric disorders to clarify the role of common as opposed to independ…

A few studies indicate that women with prolonged time-to-pregnancy (TTP) have an increased risk of cardiovascular disease (CVD). This has not been studied in men. We evaluated CVD risk by self-reported TTP among parous women (n = 64,064) an…