Mindfulness meditation reduces pain by weakening the connection between brain regions that process self-referential thoughts and those that process nociceptive signals. In a clinical trial, 40 participants were randomized to either a 4-session mindfulness meditation or a book-listening regimen. Functional MRI and noxious heat (49°C) applied to the right calf showed that mindfulness meditation significantly reduced both behavioral and neural pain responses compared to controls. The analgesia was linked to greater decoupling between the thalamus and precuneus, and deactivation of the ventromedial prefrontal cortex, suggesting a self-referential nociceptive gating mechanism.
Mindfulness meditation directly reduces evoked chronic low back pain through non-opioidergic processes, not by activating the body's opioid system. In a double-blind, randomized, placebo-controlled trial with a drug crossover design, 59 individuals with chronic low back pain completed a four-session mindfulness or sham mindfulness-meditation intervention. During intravenous naloxone (an opioid blocker) or saline infusion, both mindfulness and sham mindfulness groups showed significant pain reductions during meditation compared to rest. However, the mindfulness group reported significantly lower pain than the sham group, and its effects were more pronounced, suggesting unique benefits from non-reactive appraisal processes. Pain severity and interference scores also decreased.