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Monday, December 24, 2018

When love and science double date 24-12








 Sure, your heart thumps, but let’s look at what’s happening physically and psychologically....
 

Love’s warm squishiness seems a thing far removed from the cold, hard reality of science. Yet the two do meet, whether in lab tests for surging hormones or in austere chambers where MRI scanners noisily thunk and peer into brains that ignite at glimpses of their soulmates.
When it comes to thinking deeply about love, poets, philosophers, and even high school boys gazing dreamily at girls two rows over have a significant head start on science. But the field is gamely racing to catch up.
One database of scientific publications turns up more than 6,600 pages of results in a search for the word “love.” The National Institutes of Health (NIH) is conducting 18 clinical trials on it (though, like love itself, NIH’s “love” can have layered meanings, including as an acronym for a study of Crohn’s disease). Though not normally considered an intestinal ailment, love is often described as an illness, and the smitten as lovesick. Comedian George Burns once described love as something like a backache: “It doesn’t show up on X-rays, but you know it’s there.”

Richard Schwartz, associate professor of psychiatry at Harvard Medical School (HMS) and a consultant to McLean and Massachusetts General (MGH) hospitals, says it’s never been proven that love makes you physically sick, though it does raise levels of cortisol, a stress hormone that has been shown to suppress immune function.
Love also turns on the neurotransmitter dopamine, which is known to stimulate the brain’s pleasure centers. Couple that with a drop in levels of serotonin — which adds a dash of obsession — and you have the crazy, pleasing, stupefied, urgent love of infatuation.
It’s also true, Schwartz said, that like the moon — a trigger of its own legendary form of madness — love has its phases.
“It’s fairly complex, and we only know a little about it,” Schwartz said. “There are different phases and moods of love. The early phase of love is quite different” from later phases.
During the first love-year, serotonin levels gradually return to normal, and the “stupid” and “obsessive” aspects of the condition moderate. That period is followed by increases in the hormone oxytocin, a neurotransmitter associated with a calmer, more mature form of love. The oxytocin helps cement bonds, raise immune function, and begin to confer the health benefits found in married couples, who tend to live longer, have fewer strokes and heart attacks, be less depressed, and have higher survival rates from major surgery and cancer.
Schwartz has built a career around studying the love, hate, indifference, and other emotions that mark our complex relationships. And, though science is learning more in the lab than ever before, he said he still has learned far more counseling couples. His wife and sometime collaborator, Jacqueline Olds, also an associate professor of psychiatry at HMS and a consultant to McLean and MGH, agrees.
Love also turns on the neurotransmitter dopamine, which is known to stimulate the brain’s pleasure centers. Couple that with a drop in levels of serotonin — which adds a dash of obsession — and you have the crazy, pleasing, stupefied, urgent love of infatuation.
It’s also true, Schwartz said, that like the moon — a trigger of its own legendary form of madness — love has its phases.
“It’s fairly complex, and we only know a little about it,” Schwartz said. “There are different phases and moods of love. The early phase of love is quite different” from later phases.
During the first love-year, serotonin levels gradually return to normal, and the “stupid” and “obsessive” aspects of the condition moderate. That period is followed by increases in the hormone oxytocin, a neurotransmitter associated with a calmer, more mature form of love. The oxytocin helps cement bonds, raise immune function, and begin to confer the health benefits found in married couples, who tend to live longer, have fewer strokes and heart attacks, be less depressed, and have higher survival rates from major surgery and cancer.
Schwartz has built a career around studying the love, hate, indifference, and other emotions that mark our complex relationships. And, though science is learning more in the lab than ever before, he said he still has learned far more counseling couples. His wife and sometime collaborator, Jacqueline Olds, also an associate professor of psychiatry at HMS and a consultant to McLean and MGH, agrees. 

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