Related Experiment Video
Updated: Jan 24, 2026
An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
Childbirth close to natural menopause: does age at menopause matter?
Marthe Sørli Gottschalk1, Anne Eskild1, Tom Gunnar Tanbo2
1Department of Obstetrics and Gynecology, Akershus University Hospital, Lørenskog, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
Research Question:
Does a successful spontaneous pregnancy in the years close to natural menopause depend on age at menopause?
Design:
This was a retrospective population-based study of 4157 parous postmenopausal women in Norway, born during the years 1925-1940. Data were obtained by two self-administered questionnaires in the HUNT2 Survey (1995-1997). We calculated the proportions of women who gave birth within 5 years and within 10 years prior to menopause both among all women, and according to categories of age at menopause.
Results:
Overall, 2.7% (114/4157) of all women gave birth within 5 years, and 11.7% (487/4157) gave birth within 10 years, prior to menopause. Among women with menopause before the age of 45 years, 23.5% (81/344) gave birth within 5 years, and 55.5% (191/344) gave birth within 10 years, before menopause. Among the women with menopause at the age of 55 years or older, no women (0/474) gave birth within 5 years, and 0.2% (1/474) gave birth within 10 years, prior to menopause.
Conclusions:
More than half of the women with menopause before the age of 45 years gave birth within the 10 years before natural menopause, whereas virtually no women with menopause at the age of 55 years or older did. Thus, the length of the sterile interval before natural menopause may vary by age at menopause.
More Related Videos
08:43Aerobic Biodegradation Testing of Materials Using a Natural Marine Seawater Inoculum and Closed Loop Respirometer
Published on: October 24, 2025
14:26A Method to Study the Impact of Chemically-induced Ovarian Failure on Exercise Capacity and Cardiac Adaptation in Mice
Published on: April 7, 2014
Related Concept Videos
01:28Menopause
02:49Classifying Matter by State
02:57Physical and Chemical Properties of Matter
03:35Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
02:59The Atomic Theory of Matter
01:20States of Matter
Scientists have discovered a fourth state of matter, plasma, that occurs naturally in the interiors...