“That's what falling in love really amounted to, your brain on drugs. Adrenaline and dopamine, oxytocin and serotonin. Chemical insanity, celebrated by poets.”

“Each happy chemical triggers a different good feeling. Dopamine produces the joy of finding what you seek– the “Eureka! I got it!” feeling. Endorphin produces the oblivion that masks pain– often called “euphoria.” Oxytocin produces the feeling of being safe with others– now called “bonding.” And serotonin produces the feeling of being respected by others–“pride.”

“In neuroscience, our textbook showed how the brain scans of people newly in love look a lot like the brain scans of patients with obsessive-compulsive disorder. In each case, your dopamine is suppressing your serotonin.”

“Most people think love comes from the heart or soul. The heart simple pumps blood, so love can't be created there. Where is the center for what appears to be a persons soul? The brain. And what is created there Jilly? That's right-dopamine. What does dopamine do? creates feelings of love and euphoria. How do we get our brains to create more? Drugs, massage, and or sex. Boil it down and it's all just dopamine. The good news is that you can also get more dopamine pumping through your brain by skiing fast...”

“During times of physical separation, when touching and caressing is impossible, a deep, longing, almost a hunger, for the beloved can set in. We are used to thinking of this longing as only psychological, but it's actually physical. The brain is virtually in a drug-withdrawal state. During a separation, motivation for reunion can reach a fever pitch in the brain. Activities such as caressing, kissing, gazing, hugging, and orgasm can replenish the chemical bond of love and trust in the brain. The oxytocin-dopamine rush once again suppresses anxiety and skepticism and reinforces the love circuits in the brain. From an experiment we also know that oxytocin is naturally released in the brain after a twenty-second hug from a partner- sealing the bond between huggers and triggering the brain's trust circuits.”

“Serotonin, the "feel-good" brain chemical that is boosted by Prozac, depends on magnesium for its production and function.”