Has Evolution Trained Our Brains to Gorge on Food and Sex?

Can dopamine receptors reveal clues about binging?

Coolidge Effect regrets Romeo Guinea Pig Causes Baby Boom:

A guinea pig called Sooty enjoyed a night of passion with twenty-four females after fooling his way into their cage in south Wales. Sooty wooed the lady guinea pigs, one by one, and has now become the proud father of forty-two baby guinea pigs. . . . "He was absolutely shattered. We put him back in his cage and he slept for two days."

The Coolidge Effect is biology's gallant resolve to leave no novel mate unfertilized whatever the cost. It's typical in mammals, has also been seen in females, and can be traced all the way back to our distant relatives: rodents. Although we humans are pair bonders, our bonding program still competes with this older have-opportunity-will-get-it-on impulse.

Baby's Smile a Natural High for Mom

Submitted by fleur_rare on

please help - I'm confused now: says:
"(...) Researchers found that when the mothers saw happy images of their own baby, activation increased in areas of the brain associated with reward and the neurotransmitter dopamine compared with seeing images of other babies."

This sounds like increasing dopamine activity while I would think this increases oxytocine activity. Same area does not mean same substance, I guess, but they make it look like that.
How strongly is dopamine related to the good feeling? Or is it not?

Measuring Porn's Effects: What About the Users?

An open letter to Simon Lajeunesse

Adult Entertainment: Disrobing an American Idol film

Dear Professor Lajeunesse,

I've just read about your conclusion that porn is harmless. I'm wondering if it might be worth redesigning your questionnaire. I've been witnessing (secondhand) a lot of harm from porn, as well as some surprising benefits from leaving it behind. What I'm learning suggests that you would have to ask very different questions of your subjects if you want to measure the dangers of Internet porn use.

What Porn Users Taught Me

“By Jove, it’s the reward circuitry!”

girl in a martini glass
A dedicated member of the “to each his own taste” club, I’m all for freedom of speech. However, my website happens to discuss the highs and lows of sexual satiety in terms of the highs and lows of the typical addiction cycle. To my surprise (and theirs, I’m sure), men from all over the world showed up in my site’s forum complaining of addiction to porn/masturbation.

What's it like to go without orgasm?

Submitted by CuriousFellow on

What is it like for a guy to go for weeks at a time without orgasm? Would you go crazy with cravings? Would you be unable to sleep?

A few years ago I read the web site of a man who chose, of his own free will, to go through life celibate. Not for religious reasons, but just because he "felt better" that way. At the time I had a hard time imagining how anyone could feel that way, and wondered if the guy had abnormal hormone levels.