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Updated: Feb 11, 2026
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Fertilization of Xenopus oocytes using the Host Transfer Method
Published on: November 2, 2010
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Is gonadotropin stimulation bad for oocytes?
Svend Lindenberg1, Gitte J Almind, Frederikke B Lindenberg
1Section for Research and Development, Copenhagen Fertility Center, Copenhagen, Denmark.
Current Opinion in Obstetrics & Gynecology
|May 2, 2018
Summary
While more oocytes retrieved in in vitro fertilization (IVF) is often seen as a success metric, some fertility specialists advocate for fewer eggs. Individualized ovarian stimulation is key, considering patient factors and clinic specifics.
Area of Science:
- Reproductive Medicine
- In Vitro Fertilization (IVF)
Background:
- The common belief that a higher oocyte yield directly correlates with IVF success is widely accepted.
- However, a growing number of fertility specialists question this dogma, suggesting that fewer oocytes may be optimal for certain patients.
Purpose of the Study:
- To critically evaluate the prevailing 'more oocytes equals better IVF success' notion.
- To explore the nuances of ovarian stimulation strategies in assisted reproductive technologies.
Main Methods:
- Review of current literature on ovarian stimulation in IVF.
- Analysis of factors influencing stimulation strategy, including cost, patient expectations, legislation, and safety.
Main Results:
- The 'one size fits all' approach to ovarian stimulation is not supported by evidence.
- Ovarian stimulation impacts embryo quality, epigenetics, and the risk of ovarian hyperstimulation syndrome (OHSS).
- Strategies like agonist triggering and 'freeze all' cycles are debated for their effect on time to pregnancy.
Conclusions:
- IVF gonadotropin hyperstimulation protocols should be tailored to individual clinic demographics and patient profiles.
- The influence of stimulation on epigenetics and the overall time to pregnancy remain areas requiring further investigation.
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