“The reason people are so attracted to cocaine is that it activates the area of the brain that makes you feel good,” researcher Arthur Aron, PhD, tells WebMD. “The same reward area is activated when people are experiencing the intense desire of romantic love.”

When researchers examined the question, they found that intense feelings of romantic love affect the brain in the same way drugs like cocaine or powerful pain relievers do.

Oct. 13, 2010 -- The euphoric “high” that accompanies the passion-filled, early days of romantic love is a common pop music theme, but is it just a metaphor or is love really like a drug?

Intense Love = Less Pain

Aron, who is a professor of psychology at State University of New York (SUNY) Stony Brook, has been researching the impact of love on the brain for three decades.

Several years ago he and longtime pain researcher Sean Mackey, MD, PhD, began talking at a neuroscience conference and conceived the idea for the study.

Mackey is chief of the division of pain management and an associate professor of anesthesia at Stanford University Medical Center in California.

“He was talking about the neural systems involved with love and I was talking about the neural systems involved with pain, and we realized there was a lot of overlap,” Mackey says.

They recruited couples in the first few months of romantic relationships for the study by posting notices around Stanford University. The researchers specifically focused on the euphoric, obsessive phase of early love rather than more mature romantic relationships.

“Our subjects fit into this category of recklessly, widely, passionately in love, and it was the easiest recruiting we ever did,” Mackey tells WebMD. “The fliers asked ‘Are you in love?’ and within hours we had a dozen couples beating on our doors.”

The hypothesis was that love affected the brain in the same way many addictive drugs do, by targeting the “feel good” chemical in the brain known as dopamine. This reward system has also been shown to be critical in pain management.