Category Archives: Sex Science

Does Progesterone Influence Baby’s Later Sexuality?

A new study addresses whether supplementing progesterone during pregnancy, a common practice to prevent miscarriage, could influence a baby’s sexual orientation in later life.

Dr. June Reinisch, director emerita of the Kinsey Institute in the U.S., led the study. She found that bisexuality is quite common among men and women whose mothers received additional doses of the sex hormone progesterone while pregnant.

As discussed in the journal Archives of Sexual Behavior, researchers tracked the sexual development of 34 Danes whose mothers were treated with the hormone to prevent miscarriage.

According to the investigators, progesterone appears to be an underappreciated factor influencing the normal development of variations in human sexuality and psychosexuality.

Researchers believe the findings warrant further investigation given that little is known about the effects on offspring of natural variations in levels of maternal progesterone and that progesterone is widely used to treat pregnancy complications.

Men and women all naturally produce the sex hormone progesterone. It is involved in women’s menstrual cycles, and helps to maintain pregnancies and development of the fetus.

Progesterone plays a role in neural development and the production of other sex hormones as well as steroid hormones that help to regulate stress responses, inflammation, and metabolism in the body.

Physicians often prescribe progesterone and its bio-versions to support the fertilization process, to prevent miscarriages or premature births, or to increase babies’ birth weights.

The 34 participants in the study were drawn from the Copenhagen Perinatal Cohort, which comprises information collected from virtually all children born between 1959 and 1961 at the university hospital in Copenhagen, Denmark.

The 17 men and 17 women were selected because their mothers exclusively received the progesterone lutocyclin to prevent a miscarriage.

These men and women were compared with a carefully selected control group who were not exposed prenatally to lutocyclin or any other hormone medication, but who otherwise matched the study participants based on 14 relevant physical, medical, and socioeconomic factors.

The participants were all in their mid-20s when asked about their sexual orientation, self-identification, attraction to each sex, and sexual history using questionnaires and a structured interview with a psychologist.

It was found that men and women whose mothers were treated with progesterone were significantly less likely to describe themselves as heterosexual. One in every five (20.6 percent) of the progesterone- exposed participants labeled themselves as other than heterosexual.

Compared to the untreated group, the chances were greater that by their mid-20s they had already engaged in some form of same-sex sexual behavior (in up to 24.2 percent of cases), and that they were attracted to the same (29.4 percent) or to both sexes (17.6 percent). Both exposed males and females also had higher scores related to attraction to men.

“Progesterone exposure was found to be related to increased non-heterosexual self-identification, attraction to the same or both sexes, and same-sex sexual behavior,” says Reinisch.

“The findings highlight the likelihood that prenatal exposure to progesterone may have a long-term influence on behavior related to sexuality in humans.”

The research team believes further studies on the offspring of women medically treated with progesterone and other progestogens during their pregnancies are necessary. Additionally, studies examining the effects of natural variation in prenatal progesterone levels are warranted to provide more insight into the role that this hormone plays in the development of human behavior.

Complete Article HERE!

Why men and women lie about sex, and how this complicates STD control

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When it comes to reporting the number of sex partners or how often they have sexual intercourse, men and women both lie. While men tend to overreport it, women have a tendency to underreport it. Although the story is not that simple and clear-cut, I have discovered some interesting reasons why this is the case – and why it matters to doing research on sexual health.

Lying is an inherent aspect of reporting sexual behaviors. For instance, more females report being a virgin (i.e., had not had sexual intercourse) despite having had genital contact with a partner, compared to males.

I have studied sexual avoidance and also frequency of sex in patient populations. In this regard I have always been interested in gender differences in what they do and what they report. This is in line with my other research on gender and sex differences.

The low validity and usefulness of self-reported sexual behavior data is very bad news for public health officials. Sexual behavior data should be both accurate and reliable, as they are paramount for effective reproductive health interventions to prevent HIV and STD. When men and women misreport their sexual behaviors, it undermines program designers’ and health care providers’ ability to plan appropriately.

Pregnant virgins, and STDs among the abstinent

A very clear example is the proportion of self-reported virginal status among pregnant women. In a study of multi-ethnic National Longitudinal Study of Adolescent Health, also known as Add Health, a nationally representative study of American youth, 45 women of 7,870 women reported at least one virgin pregnancy.

Another example is the incidence of sexually transmitted diseases (STDs) which are not expected among young adults reporting sexual abstinence. Yet more than 10 percent of young adults who had a confirmed positive STD reported abstaining from any sexual intercourse in the last year before STD testing.

If we ask youth who have had sexual experience, only 22 percent of them report the same date of first sex the second time we ask about it. On average, people revise their (reported) age at first sex to older ages the second time. Boys have higher inconsistency reporting their first sex compared to females. Males are more likely than females to give inconsistent sexual information globally.

Why don’t people tell the truth about sex?

Why do people lie about their sexual behavior? There are many reasons. One is that people underreport stigmatized activities, such as having multiple sexual partners among women. They overreport the normative ones, such as higher frequency of sex for men. In both cases, people think their actual behavior would be considered socially unacceptable. This is also called social desirability or social approval bias.

Social desirability bias causes problems in health research. It reduces reliability and validity of self-reported sexual behavior data. Simply said, social desirability helps us look good.

As gender norms create different expectations about socially acceptable behavior of men and women, males and females face pressures in reporting certain (socially accepted) behaviors.

In particular, self-reports on premarital sexual experience is of poor quality. Also self-reports of infidelity are less valid.

Although most studies suggest these differences are due to the systematic tendency of men and women to exaggerate and hide their number of partners, there are studies that suggest much of this difference is driven by a handful of men and women who grossly inflate and underreport their sexual encounters.

Even married couples lie

Men and women also lie when we ask them who is making sexual decisions regarding who has more power when it comes to sexual decision-making.

We do not expect disagreement when we ask the same question from husbands and wives in the same couples. But, interestingly, there is a systematic disagreement. More interestingly, in most cases when spouses disagree, husbands are more likely to say “yes” and wives “no.” The findings are interpreted in terms of gendered strategies in the interview process.

Not all of the gender differences in reported sexual behaviors are due to men’s and women’s selective under- and over- reporting of sexual acts. And, some of the sexual behaviors do vary by gender. For instance, men have more sex than women, and men less commonly use condoms. Men have more casual partners, regardless of the validity of their report.

Secretive females, swaggering males

Studies have found that on average, women report fewer nonmarital sexual partners than men, as well as more stable longer relationships. This is in line with the idea that in general men “swagger” (i.e., exaggerate their sexual activity), while women are “secretive” (i.e., underreport sex).

Structural factors such as social norms shape men’s and women’s perceptions of appropriate sexual behaviors. Society expects men to have more sexual partners, and women to have fewer sexual partners.

According to the sexual double standard, the same sexual behavior is judged differently depending on the gender of the (sexual) actor (Milhausen and Herold 2001). Interestingly, men are more likely to endorse a double standard than women.

In the presence of sexual double standards, males are praised for their sexual contacts, whereas females are derogated and stigmatized for the same behaviors, “He’s a Stud, She’s a Slut.”

Research suggests that lifetime sexual partnerships affect peer status of genders differently. A greater number of sexual partners is positively correlated with boys’ peer acceptance, but negatively correlated with girls’ peer acceptance.

Self-serving bias is common

As humans, self-serving bias is a part of how we think and how we act. A common type of cognitive bias, self-serving bias can be defined as an individual’s tendency to attribute positive events and attributes to their own actions but negative events and attributes to others and external factors. We report on sexual behaviors which are normative and accepted to protect ourselves, and avoid stress and conflict. That will reduce our distinction from our surroundings, and will help us feel safe.

As a result, in our society, men are rewarded for having a high number of sexual partners, whereas women are penalized for the same behavior.

The only long-term solution is the ongoing decline in “double standard” about sexual morality. Until then, researchers should continue questioning the accuracy of their data. Computerized interviews may be only a partial solution. Increasing privacy and confidentiality is another partial solution.

Complete Article HERE!

Men feel sad after sex too, say researchers

Post-coital blues is a real thing

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While orgasms are (rightly) highly sought after, feeling an unexplainable sadness after sex is something a lot of women experience sometimes. But what many people don’t realise is that the same thing can happen to men.

A group of researchers at Queensland University of Technology suggest that making love can make men occassionally depressed. So depressed in fact, that they suffer something called post-coital dysphoria (PCD).

“Everyone assumes what happens in the bedroom is normal but there are a wide range of responses in the period of time immediately following consensual sexual activity, known as the resolution phase,” explains Robert Schweitzer, study author and a professor at QUT.

“For example, some people like to cuddle, others like to be alone and there are others, as we have found in previous research that experience what is described as post-sex blues.”

He noted that most of the time, the period just after sex elicits good feelings. But it’s also pretty common for some individuals to feel melancholy or tearful after the act.

While researchers seem stumped about the true cause of PCD, some suggest post-sex blues could be the result of negative emotions coming to the surface after an orgasm (or lack of one). But Schwitzer is determined to find out for sure. He’s now recruiting participants for a new study which will survey men and women (of all sexual orientations) to explore their experience directly after sex.

“There is anecdotal evidence that postcoital dysphoria is not uncommon in both men and women. If we can better understand what is happening in the bedroom and the prevalence of post-sex blues, we can start looking at causes and possible solutions,” he added.

Complete Article HERE!

Fun Sex Facts!

What Happens To Our Bodies When We’re Fucking?

Study finds unequal distribution of power in young adult relationships more harmful to women

“Inequality within a relationship doesn’t cost men as much,” researcher says

 

By Bert Gambini

Power imbalances in heterosexual relationships are common, but having less power takes a greater toll on young women than young men, according to a recently published University at Buffalo study.

The results, appearing in The Journal of Sex Research, suggest “a healthy skepticism when it comes to what looks like gender equality,” says Laina Bay-Cheng, an associate professor in the UB School of Social Work and an expert in young women’s sexuality. “This research refutes the claim that gender equality has been reached and we don’t have to worry about misogyny anymore.”

Bay-Cheng says the dynamics underneath relationships require scrutiny and the often-heard claim that girls and women have reached and in some ways surpassed equality with men unravels quickly when examined in detail.

“We have to look closely at relationships and experiences and stop taking surface indicators as proof of gender equality,” says Bay-Cheng. “When men are subordinate in a relationship, it doesn’t bother them very much. They don’t see those relationships as less intimate or stable than relationships in which they are dominant. But for young women, having less power in a relationship is associated with diminished intimacy and stability and comes with greater risk of abuse.

“Inequality within a relationship doesn’t cost men as much because they are still cushioned by a broader system of male privilege.”

Relationships that develop during emerging adulthood are foundational events. It’s from these early experiences that people learn how to be in a relationship and depending on the nature and quality of the experiences, the effects – both positive and negative – can echo throughout life.

“It’s so important that we understand that it’s not that sex and relationships are at the root of risk or vulnerability. Instead, some young women, because of intersecting forms of oppression – especially misogyny, racism and economic injustice – enter relationships and are already at a disadvantage,” says Bay-Cheng. “For young women, relationships are where all different forms of vulnerability and injustice converge.”

Bay-Cheng developed a novel research method for this study that considered both the objectives of researchers and participants’ experience, which, she says, is as important as the findings.

For this study, Bay-Cheng used a digital, online calendar that participants fill out using all of their sexual experiences from their adolescence and early adulthood. The open-ended digital calendar can be filled out over a month and participants can enter anything they want, not just text, but audio files, images or even emoji.

The result is a more meaningful measure for researchers and participants.

“On the research side we get varied and diverse data,” says Bay-Cheng. “For participants, rather than circling a number on a scale on some survey, they get to express themselves how they want, at their own pace, and then look at their calendars and get different perspective on their sexual histories and how these relate to other parts of their lives. Participants have told us how meaningful that chance to reflect can be. It’s important for researchers to care as much about the quality of participants’ experiences in our studies as the quality of our data.”

Complete Article HERE!