Carnal Knowledge: Things About Sex You Probably Don’t Know

Carnal Knowledge: Ten Things You Probably Don’t Know About Sex

By Sean Kenniff, MD

Despite the sexual revolution of the 1960s and 1970s and recent scientific advancements, there is still a lot of mystery surrounding everyone’s favorite physical activity. And if you think you know everything about sex, think again. Take a look at these ten sex headlines you might have missed. 

SEX AND THE CITY

People living in New York City have twice the number of sex partners as the average American. NY’s Daily News took a look at the sex lives of the Sex and the City Characters to see how they compared to the real thing. In the 94 episodes of six seasons the four main characters managed to bed 94 men and one woman.  Samantha was the most prolific lover, shagging 41 men and 1 woman. Carrie hooked up with 18 men and so did Charlotte. Miranda bedded 17 men. When these fictitious sexual patterns were compared to similar groups of real NY City women, those numbers were right on target.

DIRTY WORDS

The word pornography is a combination of the Greek word for prostitute, or “porno”, and the word “graphia” which means writing. So literally pornography originated as writings about prostitutes.

BREAST IMPLANTS ARE LINKED TO SUICIDE

Several studies have documented an increased risk of suicide in women who have breast implants. A Swedish study published in 2007 found women with breast implants were nearly three times more likely to commit suicide compared to women without the implants. According to the study the increased suicide risk did not appear until 10-years after the breast augmentation surgery. But twenty years after the surgery the researchers found the rate of suicide in women with implants was six times the expected rate. Some studies have found women with breast implants also have triple the risk of dying from drugs or alcohol.

SIZE MATTERS

The largest medically verified human penis measured almost 14 inches. The shortest ever recorded was 0.39 inches long, or just about one centimeter. Today normal size is said to be between five and seven inches. Rorqual whales have the largest penises of any animal; 10-feet long, and 1-foot in diameter. But compared to body size the unassuming barnacle has the largest endowment, with a penis up to 42-times its own body length (below).

MINUTE MEN…AND WOMEN

A 2008 survey of U.S. and Canadian sex therapists say “satisfying sex” lasts anywhere from three-to-thirteen minutes. 7-to-13 minutes was declared “desirable”, whereas 1-2 minutes was deemed “too short”, and more than 14 minutes was deemed “too long”.

VIRGINITY GENES?

Genes may play an important role in determining the age at which a person first engages in sexual intercourse according to a 2009 study. Researchers from California State University in Fullerton studied 48 pairs of twins who were raised apart and found the age of virginity loss was roughly 33% due to genetic influences. Previous studies have found a gene, called DRD4, is associated with impulsiveness, increased risk-taking behavior and a lower age at first intercourse. June is often cited as the most common month for loss of virginity (all those proms and weddings).

RED WINE MAY BOOST A WOMAN’S LIBIDO

Doctors from the University of Florence in Italy say a glass or two of red wine may boost a woman’s level of sexual interest. They studied more than 800 normal women and found women who enjoyed drinking 1-2 glasses of red wine had higher levels of sexual desire compared to women who drank other forms of alcohol or those who abstained. It is possible compounds in red wine increase blood flow to key areas.

HANGING CHADS

In most men the left testicle hangs lower than the right testicle, and although the reason is not entirely clear it makes a lot of practical sense. The oval shape of the testes and their different heights may prevent them from banging into each other when men walk. Both testicles rise with physical exertion or sexual intercourse for the same reason. The cremaster muscle is responsible for this reflex. Plus being further apart may keep the testicles cooler which is important for sperm production.

300 ORGASMS A DAY!

Women suffering from a rare condition called Persistent Sexual Arousal Syndrome, or PSAS, can have 300 orgasms each day or more. The orgasms in women with PSAS are usually unrelated to sexual activity or sexual thoughts, and they often occur at inappropriate and embarrassing times. In fact the orgasms come so frequently they cease to be pleasurable. Brain abnormalities have been found in some cases, but the cause of most cases remains a mystery.

FERTILE STRIPPERS MAKE MORE MONEY

New Mexican psychologist Geoffrey Miller studied female strippers and found they earn more tips in the week before their period than any other time during the menstrual cycle. This is the time of peak fertility, and Miller theorizes pheromones are signaling the men and causing them to tip larger amounts. In fact during peak fertility exotic dancers made twice as much money as they did when they were menstruating. The same study also found women on ‘the pill’ did not experience the monetary increase during this most fertile time.