Liv Bente Romundstad

observational 2024

Early or late menarche is associated with reduced fecundability in the Norwegian Mother, Father and Child Cohort Study

Human Reproduction ·doi:10.1093/humrep/deae011

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…

observational 2023

Maternal Risk of Cardiovascular Disease After Use of Assisted Reproductive Technologies

JAMA cardiology ·doi:10.1001/jamacardio.2023.2324

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…

observational 2023

Risk of ovarian cancer in women who give birth after assisted reproductive technology (ART)-a registry-based Nordic cohort study with follow-up from first pregnancy

British journal of cancer ·doi:10.1038/s41416-022-02097-7

BACKGROUND: There is concern that assisted reproductive technology (ART) may increase ovarian cancer risk, but previous studies are inconclusive. We compared ovarian cancer risk for women who gave birth after ART vs natural conception. MET…

observational 2023

Risk of stillbirth and neonatal death in singletons born after fresh and frozen embryo transfer: cohort study from the Committee of Nordic Assisted Reproduction Technology and Safety

Fertility and sterility ·doi:10.1016/j.fertnstert.2022.10.020

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…