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Pulling Away After Sex. D opamine. It's at the core of our sexual drives and survival needs, and it motivates us to do just about everything.

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Dopamine is responsible for sex-specific variations in common behaviors, finds a study of worm movements published in JNeurosci. The research demonstrates how the same neurotransmitter can contribute to sex differences, a finding that could have implications for mental disorders. Male and hermaphrodite roundworms Caenorhabditis elegans have distinct strategies for finding food and mates.

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Adolescence is a developmental period of complex neurobiological change and heightened vulnerability to psychiatric illness. As a result, understanding factors such as sex and stress hormones which drive brain changes in adolescence, and how these factors may influence key neurotransmitter systems implicated in psychiatric illness, is paramount. In this review, we outline the impact of sex and stress hormones at adolescence on dopamine neurotransmission, a signaling pathway which is critical to healthy brain function and has been implicated in psychiatric illness.

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Supposedly released whenever we experience something pleasurable, it's forever linked to salacious stories of sex, drugs and wild partying in the popular press. The Kim Kardashian of neurotransmitters, it gives instant appeal to listless reporting and gives editors an excuse to drop some booty on the science pages. There are too many bad examples to mention in detail, but I have some favourites.

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Author information: 1 Bernard B. Among central neurotransmitters involved in the control of sexual behavior, dopamine is certainly one of the most extensively studied. Our attempt to review old and recent neuropharmacological, biochemical, electrophysiological, and psychobiological studies performed so far only in rats, monkeys, and humans, provides evidence that dopamine through its different neuronal systems and receptor subtypes plays different roles in the control of several aspects of sexual behavior.

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Scientists in fields ranging from anthropology to neuroscience have been asking this same question albeit less eloquently for decades. It turns out the science behind love is both simpler and more complex than we might think. What we do know, however, is that much of love can be explained by chemistry.

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Think you're the only one with a relationship in a sexual slump? Well, you're not alone. In fact, research shows that 15 to 20 percent of romantic relationships in the United States are "sexless," which is defined as when a couple has sex less than once a month or less than 10 times a year. With busy lives, demanding jobs, families etc.

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Universidad de Valparaiso. Sex hormones exert differential effects on a variety of sensitive tissues like the reproductive tract, gonads, liver, bone and adipose tissue, among others. In the brain, sex hormones act as neuroactive steroids regulating the function of neuroendocrine diencephalic structures like the hypothalamus.

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When we think about sex, we think about the approaching, the act, the fireworks of climax… and then we usually stop there. As we saw last time, when we orgasm our brain becomes flooded with dopamine in our reward pathways of in the limbic system. This feels so intensely pleasurable that it looks just like a heroin rush to the brain, producing intense feelings of well-being Holstege et al. Because orgasm activates reward pathways much in the same way as drugs, it can also produce similar experience of addiction and withdrawal.

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