Practicing mindfulness meditation has been seen as an effective way to deal with pain by many, while some people doubt that its benefits may be due to the placebo effect, which is the influence of expectations. However, a new study published in Biological Psychiatry shows that mindfulness meditation actually stimulates specific brain pathways different from those activated by placebos, resulting in real pain alleviation.

The Complexity of Pain and the Role of the Placebo Effect

Pain is an experience that goes beyond physical feelings. Factors such as mindset and expectations also influence how pain is felt. The placebo effect, which shows that symptoms get better when given a treatment, underscores the role of expectation in shaping the experience of pain.

For a while, there was a belief that the pain-reducing benefits of meditation were connected to the placebo effect. But a study conducted by the University of California, San Diego (UCSD) has brought this into question. Using brain scanning methods, the research reveals that meditation triggers brain pathways separate from those influenced by placebos, suggesting that its advantages are not just in the mind.

Study Design: Understanding Mindfulness and Pain

The study at UCSD gathered 115 volunteers for experiments. They were divided into four groups. The first group practiced mindfulness meditation, while the second group experienced a fake version of mindfulness meditation that only focused on breathing. The third group received a placebo cream treatment, and the fourth group listened to an audiobook. Next, all participants had heat applied to their legs. Throughout the process, researchers used fMRI scans to track how brain activity changed before and after the interventions. Participants also shared their ratings of pain and discomfort levels.

The brain scans focused on three neural signatures of pain:

  1. Nociceptive-specific pain signature (NPS) – associated with the intensity of pain.
  2. Negative affective pain signature (NAPS) – related to the emotional aspect of pain.
  3. Stimulus-independent pain signature (SIIPS-1) – connected to psychosocial factors, such as expectations, and crucial for detecting placebo effects.
Mindfulness Meditation Scans
NAPS, SIIPS, NPS (left to right), Credit: UCSD

Key Findings: Mindfulness Activates Different Neural Pathways

The findings of the research revealed that mindfulness meditation had a notable effect on both pain levels and overall experience, compared to the placebo cream or sham meditation. Imaging scans indicated that mindfulness meditation led to decreased brain activity in the regions associated with pain intensity and negative emotions, the NPS and NAPS areas. On the other hand, the placebo cream mainly impacted areas involved in pain modulation based on expectations, such as SIIPS 1, emphasizing the distinct ways in which these interventions work in the brain.

This difference is important as it shows that meditation is not based on the same mechanisms as placebos are. Instead, it affects the brain’s handling of pain by decreasing communication among regions related to self-reflection and emotion control, altering the perception of pain independently from how placebos work.

Heart Rate Variability, Respiration, and Mindfulness

Supporting the idea of how mindfulness impacts our bodies, a study conducted by Ulrich Kirk and Johanne Axelsen in 2020 explored the effects of meditation on heart rate variability (HRV). HRV is a method of assessing the variations in beat intervals, which indicates the body’s ability to manage stress. Elevated HRV levels are often associated with enhanced cardiovascular health and resilience to stress.

meditation HRV RMSSD 2020
Graph showing RMSSD as a key indicator of short-term heart rate variability (HRV) and parasympathetic activity, Credit: Ulrich Kirk, Johanne L. Axelsen

In the study, which involved a 10-day online mindfulness program, it was observed that practicing mindfulness resulted in higher HRV levels during daytime and nighttime periods, suggesting better stress management and sleep quality. This finding supports the concept that meditation helps to relax the autonomic nervous system by boosting parasympathetic activity, which is reflected in HRV metrics like RMSSD (Root Mean Square of the Successive Differences).

The increase in HRV observed in the mindfulness group suggests that practicing meditation not only aids in stress reduction, but also enhances well-being. These findings reinforce the notion that mindfulness meditation serves as a beneficial approach for managing pain and stress levels without being influenced by any placebo effects.

meditation breathing 2020
Credit: Ulrich Kirk, Johanne L. Axelsen

The 2020 research also discovered that mindfulness can lead to a decrease in breathing rate during meditation. This type of breathing supports the body’s relaxation response by stimulating the parasympathetic nervous system. By reducing air intake, mindfulness contributes to a state of physiological calmness, which may aid in managing pain and stress levels. These results emphasize the significance of controlled breathing in enhancing the benefits of mindfulness meditation, underscoring its value as an alternative approach for pain management.

Implications for Pain Management

The finding that practicing mindfulness meditation activates specific brain pathways and enhances HRV has significant implications for treating pain, especially in individuals experiencing chronic pain. In the field of medicine, treatments are required to outperform a placebo in order to be deemed effective. Mindfulness meditation not only surpasses the effects of placebo in alleviating pain but also brings added advantages like stress reduction and enhancement of cardiovascular well-being.

For the millions of individuals coping with chronic pain, mindfulness presents an alternative that is free of cost, free of drugs, and can be done anywhere. According to Dr. Fadel Zeidan, a researcher, mindfulness meditation alters our perception of pain without the need for medications and with minimal resources.

By gaining a deeper insight into how mindfulness impacts the brain and body, scientists aim to create pain management strategies that are more successful. Although further studies are essential, especially among chronic pain sufferers, the current results show promise. Mindfulness meditation has the potential to become a widely accepted approach for managing pain, providing a solution that is both safe and accessible

How to Practice Mindfulness Meditation for Pain Relief

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If you want to try mindfulness meditation for pain relief, here’s a simple guide:

  1. Find a Quiet Space: Sit or lie down in a comfortable, quiet place.
  2. Focus on Your Breath: Close your eyes and concentrate on the natural rhythm of your breathing.
  3. Acknowledge Sensations: If you experience thoughts or pain, observe them without judgment and gently bring your focus back to your breath.
  4. Separate Pain from Self: View pain as a sensation distinct from yourself. This reduces emotional reactions to pain.
  5. Practice Regularly: Start with just a few minutes a day and gradually increase your practice.

Through consistent practice, you may experience both psychological and physical relief from pain.

Sources:
2024: https://doi.org/10.1016/j.biopsych.2024.08.023
2020: https://doi.org/10.1371/journal.pone.0243488

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