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Sexual Desire and Genetic Makeup
 Researchers
of Hebrew University, Jerusalem, have found out that individual variations in sexual desire in humans are inextricably linked to genetical makeup.
The study results, published in the journal Molecular Psychiatry, are thought to revolutionize the way sexual disorders, especially
sexual dysfunctions, are been treated in the future.
Earlier, nothing much was known to the scientists regarding the biological base of sexual desires and behavior, and it was widely believed that sexuality is influenced more by learned behavior or psychological makeup than anything genetical or biological.
However, the new findings have in fact blown the lid off this concept and the wind of change is slowly seeping in to the academic circles across the globe. Now, more and more universities and research institutes are focusing on the genetical side of sexual behaviors while studying dysfunctions than it was few years back.
In the recent study lead by Prof. Richard P. Ebstein, the head of the Scheinfeld Center for Human Genetics at the Hebrew University, the researchers studied the DNA of 148 healthy male and female university students and compared the observations with the questionnaires answered by them, the questions mainly focused on each individual's sexual tastes and desires, arousal and overall sex function.
The results showed that there is a clear link between variants in the receptor gene D4 – that plays an important part in the production of dopamine receptor protein (DRD4) – and the university student's answers to the questionnaires.
In the study, it was found out that some variants of D4 gene have a depressing effect of sexual arousal and desires, and some others inducing a positive effect on arousing sexual desires. A closer analysis of mutation patterns further revealed that the latter is a recent mutation that could have happened 50, 000 years ago (nearer to the time of human exodus from African continent).
In the present day population in the world, the section carrying the sexually active gene amounts to about 30 percent while nearly 60 percent of human beings are carriers of the depressant variant.
The direct outcome of this revelation will be in the treatment and study of
sexual dysfunctions, the branch of medicine which at present tend to consider lower sexual drive as root of some underlying dysfunction than a natural phenomenon. According to the research results, such a thing could also due to genetical design and not necessarily a disease to be treated.
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