Pain relief from mindfulness meditation not a placebo effect

New research has found that mindfulness meditation reduces pain by engaging a distinct brain pathway, separate from the pathway activated by a placebo. 

Placebo or sham surgery can be as effective as a real one

A review of 53 placebo-controlled surgery trials found that sham surgery was as good as the real thing in over half of the studies. Sham surgery activates the wound-healing cascade.