Related Experiment Video
Updated: May 23, 2026

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Gonadotropin therapy: a 20th century relic
Richard H Reindollar1, Marlene B Goldman
1Department of Obstetrics and Gynecology, Dartmouth Medical School, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03756, USA.
Injectable gonadotropins for infertility, while historically significant, are increasingly questioned due to high rates of multiple births and ovarian hyperstimulation syndrome. Research suggests lower doses for IVF and challenges their use in superovulation/IUI, proposing a shift away from this therapy.
Area of Science:
- Reproductive Endocrinology
- Infertility Treatment
Background:
- Gonadotropin therapy has been a primary infertility treatment for 50 years.
- Its use is linked to high rates of multiple births and ovarian hyperstimulation syndrome.
Observation:
- Initial success rates with superovulation (SO)/intrauterine insemination (IUI) seemed acceptable.
- Emerging randomized controlled trial (RCT) data challenges the efficacy and safety of injectable gonadotropins.
Findings:
- Studies question the continued use of gonadotropins for SO/IUI.
- Research supports the use of reduced gonadotropin doses in in vitro fertilization (IVF).
Implications:
- The established use of gonadotropins for SO/IUI faces significant challenges.
- A global shift towards lower gonadotropin doses for IVF is supported.
- The future of infertility treatment may necessitate moving beyond traditional gonadotropin protocols.
Related Concept Videos
Gonadal and Placental Hormones
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
Hormonal Control of the Ovarian Cycle
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of endometrial...
Infertility in Males
Hybridoma Technology
Hybridoma Selection
Commonly used fusion techniques — electroporation, polyethylene glycol...
Testosterone: Functions and Regulation

