A number of years ago, I found myself at a public sex beach in southern France for research purposes. Unsurprisingly, I experienced some ethical dilemmas.

Why do men send dick pics? Some research and popular commentary suggests it is for reasons of narcissism and over-confidence. Some men no doubt send them in the hopes of receiving a nude photo in kind, or because they genuinely believe that’s what women desire.

In prenatal ultrasounds or at delivery, many new parents look between their baby’s legs: the presence of a penis is taken as a strong sign that it’s a boy.

We are already living through a new sexual revolution, thanks to technologies that have transformed the way we relate to each other in our intimate relationships.

Couples are getting the message that there’s a certain point at which they should start having sex again after having a baby, interviews show.

Sex helps initiate romantic relationships between potential partners, a new study finds.

Studies show that women reach climax less often than men do during sexual encounters together.

What brings a person to consider celibacy for a few months or years cannot be easily explained. It will take some time to reap the results of greater tolerance for sexual feelings without needing to act on them in conventional ways. Sex will become more of a choice than a need.

Humans are sexual beings. This urge does not stop when the clock strikes 60. Or even 90.Young adults may deny older relatives are having sex, but sexual activity is a strong indicator of healthy aging and vitality.

I feel that now is the time to take a completely different look at Homosexuality! With modern science suspecting the causes of same-sex orientation to be genetic, it is time to dispel the myths of choice. When people are born a certain way through no choice of their own -- such as race, or looks, or handicaps -- should they be penalized by society? Is that fair?... I think not.

One in 3 American adults do not get enough sleep. Sexual issues are also common, with as many as 45 percent of women and 31 percent of men having a concern about their sex life.

On 27 February 1907, at Berggasse 19 in Vienna, Sigmund Freud fell in love. The object of his affection was Carl Gustav Jung: 19 years younger than Freud, the young psychiatrist was already the clinical director of the prestigious Burghölzli Hospital and a professor at the University of Zurich.

Energy, like water, is the life-giving sustenance of the earth. Sexual energy is nourishment for the totality of ourselves -- the body, the mind, and the spirit. It is the water of life, replenishing the gardens of the human temple. Working with energy is a pivotal factor in our overall state of happiness.

Two men regularly meet at a sex club, so that one (‘the top’) can fist the other (‘the bottom’). One night, the fisting duo stay until the club closes. The lights click on in their sobering glory, exposing the prosthetic hand that the top has been inserting into the anus of the bottom.

Times are changing, and for the most part, the word 'crone' is now accurately being used as a synonym for a woman who not only embodies postmenopausal wisdom, but shares it with the world. It is the time when the wisdom and healing of a woman's menopausal journey quickens in her heart, and her desire to share all that she has learned drives her back to the outer world.

The most common sexual problem is low desire, according to a research study we recently published in the Journal of Sexual Medicine. Around 40 per cent of the women we asked, and 30 per cent of men, reported experiencing problems with low desire during the last six months.

Research shows we think young people have a lot more sex than they do in reality – and men have a particularly skewed view of the sex lives of young women.

When I tell people I’m studying women who like gay male porn I get some pretty mixed responses. Men tend to tilt their heads quizzically to one side. “Really?”

‘The world has always belonged to males,’ wrote Simone de Beauvoir in The Second Sex (1949), ‘and none of the reasons given for this have ever seemed sufficient.’

As the TV series Westworld wraps up its second season, the show continues to spark discussion about a potential future that involves lifelike sex robots.

The old cliché tells us the most desirable men are “tall, dark, and handsome” – and scientific research confirms that heterosexual women tend to prefer partners who are taller than them.

It was a well-kept secret among historians during the late 19th and early 20th centuries that the practice of magic was widespread in the ancient Mediterranean

A male African jacana bird mounts a female, but who takes the lead in caring for the young?. In many species, the males develop elaborated sexual traits to attract females and dissuade potential rival males through competition.