The Secret Sex-Nerve: Does the Nose Know?
Sat, 2008-04-26 02:39 - Kerry
Looking for a perfect match? Research says to follow your nose
By Dr. Laura Berman
TODAYShow.com contributor
updated 12:04 p.m. ET, Tues., March. 25, 2008
What makes us fall in love? Is it lust, mutual interests, shared life goals, or something much more intangible? Recent research suggests the latter.
Researchers have only recently discovered an olfactory nerve that they believe is the route through which pheromones are processed. Nerve “O,” as it is called, slipped under the radar for many years because it is so tiny. However, when the nerve was discovered in a whale, scientists surmised that this little nerve might be found in humans as well. And it was!
So what is the role of Nerve “O”? Nerve “O” has endings in the nasal cavity, but the fibers go directly to the sexual regions of the brain. Indeed, these endings entirely bypass the olfactory cortex! Hence we know the role of Nerve “O” is not to consciously smell, but to identify sexual cues from our potential partners.
What sexual cues do our scents give off? For one thing, we are more likely to be attracted to people whose scent is dissimilar to our own. Family members often share similar chemicals, so our attraction to differing chemical makeup suggests that sexual cues evolved to protect close family members from procreating together. On the other hand, pregnant women have been shown to be more drawn to people with similar chemical makeup, which might be due to the fact that during this crucial time, women are more apt to seek out family members than potential mates.
Research has also shown that these unconscious cues processed in Nerve “O” can make or break a relationship. Couples who have high levels of chemicals in common are more likely to encounter fertility issues, miscarriage and infidelity. The more dissimilar your and your partner’s chemical makeup, the better chance you will have at successfully procreating and staying together.
So how can you create the scent that will keep you and your partner in the land of happily ever after? Unfortunately, you can’t. Perfumes and colognes can’t fool Nerve “O” — the scents that humans and animals are attracted to are intangible and instinctive. Even the most expensive designer perfume can’t fool Mother Nature. When it comes to sexual attraction, it seems you really have to leave things in the air!
However, if you are taking a hormonal contraceptive, you might be bucking an evolutionary tide. Women who are on the pill are more likely to be attracted to men with similar chemical makeup — most likely because their bodies are fooling them into believing they are pregnant, and so much like actual pregnant women, their Nerve “O” leads them to kin and not mates. So if you were on the pill when you met your mate, you might experience a diminishing attraction when you cease taking it.
Only time will tell what role Nerve “O” plays in future sex research, but one thing is for sure: When it comes to true love, follow your nose!
Dr. Laura Berman is the director of the Berman Center in Chicago, a specialized health care facility dedicated to helping women and couples find fulfilling sex lives and enriched relationships. She is also an assistant clinical professor of OB-GYN and psychiatry at the Feinberg School of Medicine at Northwestern University. She has been working as a sex educator, researcher and therapist for 18 years.
© 2008 MSNBC Interactive
Comments
Senses and Reflexes
These sort of articles fascinate me because as an adoptee, I wonder how many scientists forget how basic and primal our senses really are in terms of bonding and attaching ourselves to another person. Sense and familiarity breed comfort; alter the external stimuli too much or too frequently, won't that alter a newborn's ability to trust the outside world's ability to meet even the most basic of needs?
Even the terminology given to natural-born reflexes can shed light on the clear connection and direction safety and security affect the mind-body experience. For instance, the following are just a few simple temporary tools to survival each healthy newborn is given after birth.
For the newborn, the outside world is a dangerous place because for the first time in his otherwise sheltered life, reality becomes painfully real and clear: not all needs are going to be met like they were inside mommy's belly. As an adult, imagine the frustration you would have if your most basic human needs were not being met! [How long and happy is that life going to be?]
Is it any wonder food and sex are so closely related? Hunger and satiation are the easiest examples of need versus want; surely I'm not the only one who sees how easily a person can get tricked and fooled! Common sense, and a bad cold, says smell affects food intake. Without the sense of smell, a person cannot taste. [Try it -- hold your nose and eat something.] One does not have to taste food to benefit from eating, but imagine how a bad (or sweet ) smell affects how often or well a person will eat. If an object smells rancid, tastes bitter, and feels rough and uncomfortable, how well will the feeding-nurturing experience go?
Sexologist may think this smell-factor, or "O Nerve", is something new, but any mother can tell you, she can tell her baby from a stranger's, simply by it's smell. A breastfeeding mother can also tell you how satisfying it is to feed her hungry baby. [Oh... if only men knew!] This human-biology stuff just makes me wonder, If a baby's reflexes, or a mother's instincts aren't stupid, why are adult reactions and responses to the obvious needs of others so slow?