Mindfulness meditation shown to reduce pain: study

by Jane Kitchen | 30 Nov 2015

Scientists at Wake Forest Baptist Medical Center in North Carolina, US, have found new evidence that mindfulness meditation reduces pain.

The research, published in the Journal of Neuroscience, showed that study participants who practiced mindfulness meditation reported greater pain relief than placebo.

Significantly, brain scans showed that mindfulness meditation produced very different patterns of activity than those produced by placebo to reduce pain.

“We were completely surprised by the findings,” said Fadel Zeidan, Ph.D., assistant professor of neurobiology and anatomy at Wake Forest Baptist and lead investigator of the study.

“While we thought that there would be some overlap in brain regions between meditation and placebo, the findings from this study provide novel and objective evidence that mindfulness meditation reduces pain in a unique fashion.”

The study used a two-pronged approach – pain ratings and brain imaging – to determine whether mindfulness meditation is merely a placebo effect.

Seventy-five healthy, pain-free participants were randomly assigned to one of four groups: mindfulness meditation, placebo meditation (“sham” meditation), placebo analgesic cream (petroleum jelly) or control.

Pain was induced by using a thermal probe to heat a small area of the participants’ skin to 49 degrees Centigrade (120.2 degrees Fahrenheit), a level of heat most people find very painful. Study participants then rated pain intensity (physical sensation) and pain unpleasantness (emotional response). The participants’ brains were scanned with arterial spin labelling magnetic resonance imaging (ASL MRI) before and after their respective four-day group interventions.

The mindfulness meditation group reported that pain intensity was reduced by 27 per cent and by 44 per cent for the emotional aspect of pain. In contrast, the placebo cream reduced the sensation of pain by 11 per cent and emotional aspect of pain by 13 per cent.

“The MRI scans showed for the first time that mindfulness meditation produced patterns of brain activity that are different than those produced by the placebo cream,” Zeidan said.

Mindfulness meditation reduced pain by activating brain regions associated with the self-control of pain, while the placebo cream lowered pain by reducing brain activity in pain-processing areas.

Another brain region, the thalamus – an area that serves as a gateway to determine if sensory information is allowed to reach higher brain centres – was deactivated during mindfulness meditation, but was activated during all other conditions.

By deactivating this area, mindfulness meditation may have caused signals about pain to simply fade away, Zeidan said.

Mindfulness meditation also was significantly better at reducing pain intensity and pain unpleasantness than the placebo meditation.

The placebo-meditation group had relatively small decreases in pain intensity (9 per cent) and pain unpleasantness (24 per cent). The study findings suggest that placebo meditation may have reduced pain through a relaxation effect that was associated with slower breathing.

“This study is the first to show that mindfulness meditation is mechanistically distinct and produces pain relief above and beyond the analgesic effects seen with either placebo cream or sham meditation,” Zeidan said.

“Based on our findings, we believe that as little as four 20-minute daily sessions of mindfulness meditation could enhance pain treatment in a clinical setting.”

However, Zeidan cautioned, given that the study examined healthy, pain-free volunteers, the findings cannot be generalised to cover chronic pain patients yet.

Scientists at Wake Forest Baptist Medical Center in North Carolina, US, have found new evidence that mindfulness meditation reduces pain. The research, published in the Journal of Neuroscience, showed that study participants who practiced mindfulness meditation reported greater pain relief than placebo. Significantly, brain scans showed that mindfulness meditation produced very different patterns of activity than those produced by placebo to reduce pain. “We were completely surprised by the findings,”
HAF,SAB,CPW,CAS,ACD,RES
Brain scans showed that mindfulness meditation produced very different patterns of activity than those produced by placebo to reduce pain
/ Shutterstock / IAKOBCHUK VIACHESLAV
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