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New Study Showing the Benefit of Acupuncture for Stress and Depression

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New Study From Georgetown University Medical Center Shows the Benefits of Acupuncture

A new study in rats from Georgetown University Medical Center and published in the journal Endocrinology, has shown the benefits of acupuncture for stress and depression.  While this is the first step in studying acupuncture in rats, hopefully soon this study can been done with humans to see how beneficial it can be for us as well.  Anyone who has had acupuncture a few times know just how beneficial it can be in naturally helping reduce stress and depression.

Ladan Eshkevari, PhD, a nurse anesthetist, licensed acupuncturist and associate professor in the department of nursing and the department of pharmacology and physiology at Georgetown University Medical Center, noticed that the acupuncture patients coming to her for pain were reporting improvement of symptoms unrelated to their pain, like chronic stress, depression, sleep and appetite.

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In the experiment, the researchers compared four groups of rats: one group was stressed and given acupuncture; another group was stressed and given sham acupuncture (at a non-acupuncture point to make sure any results weren’t due to a placebo effect); a third group was stressed and didn’t get any acupuncture; and a final control group just hung out without any interventions.

First, the researchers decided to look at an acupuncture point called stomach 36; according to Chinese medicine, it’s a potent point associated with stress, stomach issues and pain, and in humans, it’s located right below the knee behind the tibia bone. The rat equivalent of stomach 36 is on the hind paw near the knee, Eshevari says.

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“It took me months to figure out how to do acupuncture on an awake rat,” says Eshkevari. It would have been easier to anesthetize them, but Eshkevari didn’t want to affect stress hormone levels. So she cut up her husband’s tube socks to hold the rats during treatment. “It was only big enough for them to crawl in to their hind legs, so their hind paws would be hanging out,” she says. She put the rats in the socks, quickly inserted the needles and connected them to the electrodes for their 20-minute sessions.

After 11 days of stress and acupuncture, Eshkevari put the rats to the test. When placed in an open box, less anxious rats will more readily explore; anxious rats will sit in the corner. And in a forced swim test, rats are dropped in a bucket and forced to swim; the quicker they give up, the higher they score in depression.

The rats who had acupuncture at the stomach 36 point had levels of cortisol in their blood comparable to the control rats that weren’t stressed—and lower cortisol levels than the other stressed-out rats, including the rats who received sham acupuncture. Likewise, the stressed-out rats who didn’t receive acupuncture showed more anxiety, depression and hopelessness through the behavioral tests, while the acupuncture-treated rats behaved a lot more like the normal rats that hadn’t been exposed to anything, Eshkevari says. “In this model, acupuncture can allay some of the untoward effects of stress,” she explains.

To make sure the acupuncture was affecting the pathway they thought it was, the researchers gave the rats a drug to block the HPA pathway, then retested the rats of behavioral measures. The effect went away.

“That’s how we know that the acupuncture not only worked, but it worked via the pathway we’re hypothesizing it works,” Eshkevari says.

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Still, she believes it’s an important preliminary step. “I had a sense anecdotally from the patients,” she says. “Now I feel like we have some evidence that this does work, the placebo is controlled for, and when we block the pathway it stops working. We know this is a potential mechanism. Now I can more confidentially try to translate that to humans.”

 

Special Thanks to:  Mandy Oaklander of Time Magazine for this Article

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