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Oxytocin: The Book

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May 12, 2008

True Love and Business

I've written several times about the interesting and revolutionary work Paul Zak is doing on oxytocin and its relationship to business and economic exchange. In short, Paul is in the process of proving that the virtues of generosity and trust are crucial for a thriving economy.

MonfriedEarlier this morning, I had on my other hat: technology journalist. Researching Lotame, a company I'll include in a story about targeting online advertising, I came across this in a great blog post from the company's founder, Andy Monfried (right). He's talking about what companies can do to survive during these .. um .. difficult economic times:

9) rely less on email, and more on good old fashion people skills.  email is NOT people skills.

10) give way more love and good vibes than EVER. passion goes a long way in any business, and it's often under utilized - and, overlooked.

That's good advice for anyone in business at any time -- and maybe should go at the top of the list. Meeting face-to-face, looking into another person's eyes, shaking hands and sharing a beverage or a meal provide an opportunity to build trust, based on spurts of oxytocin from the hypothalamus combined with dopamine tickling the brain's reward centers. Trust and love are different points on the same neurochemical spectrum. When you love someone, you want good for them. And Andy is right, that kind of love impels each of you to help the other succeed.

I like the name of his blog, too: You Ain' Gonna Learn What You Don't Want to Know. So true.

May 09, 2008

Oxytocin Deficit Disorder

Everything that's outside the norm or seems unhealthy is considered a disorder these days. This partly reflects Big Pharma's desire to increase profits by finding new diseases it can treat. Nevertheless, I believe that recognizing some things that used to be considered character flaws or hopeless cases as disorders that might be treatable have benefited millions of people.

Now, instead of being classified as a bad or stupid kid, children who disrupt class and have trouble learning may be given the less pejorative label of ADHD. While how to help them remains controversial, with many people thinking these kids are over-medicated, many others are thankful the drugs are working.

The same thing is true with clinical depression, as well as its cousin, post-partum depression. Selective serotonin reuptake inhibitors, or SSRIs, can alter neurochemistry and help many sufferers lead better lives. Dario Maestripieri of the University of Chicago has shown that the kind of mothering a baby rhesus macaque monkey gets influences the serotonin levels of its brain on into adulthood. Baby rhesus with mean mothers show symptoms of depression.

Evidence is mounting that babies and children who don't get enough or the right kind of nurturing may have abnormal brain development. This can result in an overactive stress response and an under-active oxytocin response. Similarly, some scientists are looking at abnormalities in the oxytocin system as causal factors in autism.

I think the day will come -- in the next three to five years -- when something like "oxytocin deficit disorder" will make its way into the DSM -- and into psychopharmacology. Drugs that introduce an oxytocin-like substance into the body, or increase its production by the hypothalamus or other oxytocin-producing sites, may provide a quicker fix for people who feel they can't connect emotionally with others.

May 07, 2008

A Paradoxical Reaction to Oxytocin?

A new blog from Alia Macrina Heise identifies a syndrome she calls depressive milk ejection reflex, or D-MER. She defines it thus:

"Depressive Milk Ejection Reflex is a condition that causes a prodromal effect of negative emotions that emerge only before the milk ejection reflex, or letdown, in a lactating mother."

According to her blog, she's the mother of three -- and a lactation counselor. Although breastfeeding is supposed to be a peak experience -- deeply rewarding, sensual and soothing, thanks to oxytocin -- she experienced something quite different.

Go to her blog, D-MER.org, to read more about her experiences and those of other women.

One theory Alicia has for the cause of this syndrome, which involves discomfort and depression during breastfeeding, is a paradoxical reaction to oxytocin. A paradoxical reaction is when someone has not the expected reaction to a drug, but a different one, often the opposite.

I would guess that, rather than a paradoxical reaction to oxytocin, D-MER might be caused by an excess of prolactin. Prolactin is involved in milk letdown, but it's also involved in sexual satiety. It's the hormone, released at orgasm, that tells our bodies we've had enough sex, so give it a rest.

People sometimes talk about a feeling of letdown following sex, a sense of depression and even of distaste for one's partner. I think this, too, is the result of a bit too much of prolactin's satiating ability. It makes sense to me that an excess of prolactin, or too intense a response to its effects, could be the cause of D-MER.

Here are studies indicating prolactin's effect on sexual satiety:

Krueger, Tilmann H.C.; Haake, Philip; Hartmann, Uwe; Schedlowski, Manfred; and Exton, Michael S., Orgasm-induced prolactin secretion: feedback control of sexual drive? (Neuroscience and Biobehavioral Reviews 26 2002) 31-44)

Krueger, Tilmann H.C.; Haake, Philip; Haverkamp, J.; Krämer, M .; Exton, Michael S.; Saller, B; Leygraf, N.; Hartmann, Uwe; and Schedlowski, Manfred, Effects of acute prolactin manipulation on sexual drive and function in males (Journal of Endocrinology (2003) 179, 357–365)

May 05, 2008

Science vs. Religion (When It Comes to Love)

Some very heated discussion on the Ave Maria Gratia Plena blog following author Michelle's comments about oxytocin, bonding and premarital sex. It shows how attempts to understand how our biology affects our emotions gets mired in emotion.

In Why I disagree with promiscuity and fear for the FLDS kids that will be taught modern sex ed, she writes that she's worried that the children removed from the Fundamentalist Latter Day Saints camp will be taught modern society's ways, including acceptance of premarital sex. She goes on to make some statements about how the bonding effects of oxytocin following sex and orgasm can cloud a woman's judgment about a man.

I think she makes some very valid points; I do agree with this:

Ever wonder why so many women are "in love" with total losers and won't end the relationship? O-x-y-t-o-c-i-n...
~ This is why so many marriages fail when the couples have slept together before being wed: a woman that is chemically bonded to a man is in danger of settling for a husband that is totally not compatible with herself. She can't see this because she is trapped in a bond she probably knows nothing about. (When do they teach girls about oxytocin in sex ed classes??)

However, framing these ideas with this really tragic situation makes it a lot harder to examine what she says. As commenters rightly point out, surely the situation these women, and especially the very young girls who were married to older men who had multiple wives, were in a worse situation than someone who finds herself "bonded to a total loser."

Still, many comments accuse her of ranting and twisting science. One wrote,

You made the claim that a woman is bonded to her sexual partner against her will by oxytocin. That a woman falls in love with a "loser" because of oxytocin. You cannot ask me to offer counterproof until you offer some credible evidence - other than a reference to Wikipedia - to support your statements. Then you'll get your "argument".

I really wish it weren't so, but there is plenty of credible evidence that both men and women become bonded to their sex partners -- and women more so than men. I wish we humans were able to create new forms of relationships and new societies based on our ideals, not our biology. But we remain deeply influenced by our animal natures.

It's completely proven that men and women release oxytocin during  orgasm. Following are some studies that, taken together, make a very strong case that oxytocin creates the bond of human love, and that estrogen increases oxytocin's effects:

Bale, Tracy L.; Davis, Aline M.; Auger, Anthony P.; Dorsa, Daniel M.; and McCarthy, Margaret M. 2001. CNS Region-Specific Oxytocin Receptor Expression: Importance in Regulation of Anxiety and Sex Behavior. The Journal of Neuroscience 21(7):2546-2552.

Bales, Karen; Lewis-Reese, Antoniah; Pfeifer, Lisa; and Kramer, Kristin; and Carter, C. Sue. 2007. Early Experience Affects the Traits of Monogamy in a Sexually Dimorphic Manner. Developmental Psychobiology 49:335-342

Carter, C. Sue; DeVries, A.C.; and Getz, L.L. 1995. Physiological substrates of mammalian monogamy: the prairie vole model. Neuroscience and Biobehavioural Reviews 19(2): 303-14.

Carter, C. Sue. 2007. Sex differences in oxytocin and vasopressin: Implications for autism spectrum disorders? Behavioural Brain Research 176(1):170-86.

Chung, Wilson C. J.; De Vries, Geert J.; and Swaab, Dick F. 2002. Sexual Differentiation of the Bed Nucleus of the Stria Terminalis in Humans May Extend into Adulthood, The Journal of Neuroscience 22(3):1027–1033.

Cushing, B.S. and Carter, C.S. 1999. Prior Exposure To Oxytocin Mimics the Effects Of Social Contact and Facilitates Sexual Behaviour In Females. Journal of Neuroendocrinology 11(10):765–769.

Georgiadis, Janniko R.; Reinders, Simone A.A.T.; Van der Graaf, Ferdinand H.C.E.; Paans, Anne M.J.; Kortekaas, Rudie. 2007. Brain activation during human male ejaculation revisited. Neuroreport 18(6):553-557.

 

Young, Larry J. and Wang, Zuoxin, The neurobiology of pair bonding (Nature Neuroscience Vo. 7. No. 10, October 2004)

Zak, Paul J.; Kurzband, Robert; and Matzner, William T., Oxytocin is associated with human trustworthiness (Hormones and Behavior 48 (2005) 522 – 527)

 

May 02, 2008

Mommy Your Man or Have a Grown-Up Relationship

There used to be a popular T-shirt that read, "I wanted to have a baby, not marry one!"

In fact, women can easily fall into the trap of mothering their mates. First, women's higher levels of oxytocin make them prone to mothering behaviors. And, let's face it, men who grew up with mommies who took care of them sometimes have a difficult time transitioning to independent adulthood. Finally, many men seem to not care as much as the women in their lives about things like neatness and nutrition.

These factors make it all too easy to fall into mommying him: Picking up after him, reminding him to take care of himself, making doctors appointments for him, etc. According to this article on CNN Living, it's a really bad idea.

Babying the man in your life can mean two things, Tessina says: A. You've been spending too much time being mommy and may need a break from the kids, or B. You need more adult contact, whether it be a weekend away with the girls or a few hours at the mall while the kids are with a sitter.

Tessina says that normal nurturing -- cooking for him, massaging him, tending to him when he's sick -- can feel motherly if you're too controlling about it. "Instead, tell him what you'd like to do to help him, and ask him if he wants that kind of help. This evens the field and makes you equals," she says.

I would add that it can ruin your sex life and your whole relationship. All that oxytocin a woman generates can make sex with him seem unconsciously weird, and oxytocin is not the hormone of desire, it's the hormone of fulfilled desire, aka orgasm. An excess of oxytocin also can damp down the effects of his testosterone -- not a problem when he's a young bull, but increasingly an issue as he -- and the marriage -- ages.

Besides, who wants to make love to a baby?

Read the article for amazing stories of how far some women go.

Do You Mommy Your Husband?

April 29, 2008

Home Birth Activism Hits UK

According to the Guardian, Rikki Lake's film, "The Business of Being Born," is helping to fire up a movement to provide greater access to home birth, as well as midwife-assisted birth in-hospital.

One really great quote from Angela Horn, who set up homebirth.org.uk to debunk the myths about how unsafe home birth was:

"It's incredible how a good birth can change a woman. You've brought new life into the world, and you've done it yourself rather than, as happens to so many women, finding yourself at the heart of a crisis that you need to be rescued from."

Read the article: Birth of a Revolution.

April 28, 2008

Tend and Befriend during Hurricane Katrina


  Reunion Arena Relief Efforts 
  Originally uploaded by tonguetyed.

You were more likely to survive Hurricane Katrina if you had the benefit of a social network with other women, according to researchers at the University of Missouri.

According to the article,

Jacqueline Litt, associate professor and chair of the Department of Women's and Gender Studies at MU, found that informal family and community networks coordinated by women are vital in emergency situations. More than 50 people were evacuated from New Orleans, La., through the efforts of two "core anchors," a 58-year-old woman and her daughter, who initiated communication and organization using established familial and social relationships.

Litt found that warnings from the government didn't carry as much weight with people as word of mouth from people they already knew and trusted. And women, who tend to be better at communicating and keeping in touch, were better at getting the word out and getting people to act in time.

This finding reflects a reaction to danger or stress that UCLA psychologist Shelley Taylor dubbed "tend and befriend." According to Taylor, while men often go into fight-or-flight mode, women have evolved the tend and befriend strategy because it was more likely to ensure that the children would be safe or at least survive. If a mother stood up and fought -- and lost -- her child might be killed too. If the child wasn't killed, it could only survive if her kin or friend were willing to foster it.

Taylor thinks that oxytocin, the neurochemical of calm and bonding, might be at work in the tend-and-befriend survival strategy. Oxytocin is also the chemical of social connection, helping women to create and maintain the social networks that can help them and their children survive.

The example of these women during the hurricane is an excellent example of this survival mechanism in action.

April 25, 2008

Is Gay Love Different?

If you're interested in my scientifically informed hypotheses about how gay bonding is different and the same from the straight version, please check out my article on Scientific Blogging: Lesbian Bed Death Explained.

April 24, 2008

Oxytocin and the Male Monkey

42108sqmonkeys Much research has been done on the role of oxytocin in behaviors related to bonding and parenting in prairie voles, a socially monogamous species. Karen Bales at UC Davis is looking at oxytocin and vasopressin in titi monkeys, a socially monogamous primate.  Working up the evolutionary chain makes it more likely that changes in behavior caused by manipulating oxytocin could give us insights into human behavior.

Adam Smith, a graduate student at the University of Nebraska, just got a National Science Foundation to continue his work on oxytocin and male marmosets -- still another socially monogamous primate.

And, gotta love whoever wrote the headline:

Monkey Love May Be in the Air

Smith is looking to determine whether elevating or suppressing the oxytocin in marmoset monkeys will affect the social behavior that influences the monogamous relationships of adult male and female monkeys.

April 22, 2008

Oxytocin Withdrawal a Problem after Weaning


  the breastfeeding Lady 2 
  Originally uploaded by Raphael Goetter.

To post-partum depression, add another neurochemical pitfall of mothering: post-weaning depression. Blogger Jen Eyer examines her experience of "breastfeeding withdrawal" on Neurotic Mom.

She writes,

    Now that I think about it, it really isn't surprising that even a decrease in nursing would cause my mood to drop. Less nursing = less oxytocin, aka the "love hormone." It's going to take time to adjust to the withdrawal.

It sounds like Jen has a wonderful and supportive husband. But she's forgetting a possible replacement for the oxytocin she's missing: sex and orgasm.