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Using Mouse Oocytes to Assess Human Gene Function During Meiosis I

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Genetic influences on variation in female orgasmic function: a twin study.

Kate M Dunn¹, Lynn F Cherkas, Tim D Spector

¹Primary Care Sciences Research Centre, Keele University, Staffordshire ST5 5BG, UK.

Biology Letters

|December 7, 2006

Summary

Genetic factors significantly influence female orgasmic dysfunction. This study found heritability estimates for difficulty reaching orgasm during intercourse and masturbation, suggesting a biological basis for sexual function variations.

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Area of Science:

Genetics
Human Sexuality
Reproductive Health

Background:

Female orgasmic dysfunction is a prevalent issue with unclear causes.
Understanding the etiology is crucial for developing effective interventions.

Purpose of the Study:

To investigate the potential genetic influences on female orgasmic dysfunction using a classical twin study design.
To quantify the heritability of difficulties in achieving orgasm.

Main Methods:

A confidential survey was administered to adult female twins from the TwinsUK registry.
Data from 4037 women (683 monozygotic and 714 dizygotic twin pairs) were analyzed.

Main Results:

32% of women reported infrequent or no orgasm during intercourse; 21% during masturbation.
Heritability estimates for difficulty reaching orgasm were 34% during intercourse and 45% during masturbation.
Significant genetic influence was observed for both sexual activities.

Conclusions:

Female orgasmic dysfunction has a substantial genetic component.
Findings suggest biological and potentially evolutionary factors contribute to female sexual function.
Further research into the biological underpinnings of female sexual response is warranted.