Based on this overview and meta-analysis we found no positive
effect in reduction of depression by acupuncture compared
to a waiting list control. However, this overview suggests significant
beneficial effects for acupuncture in improving depression
compared to the pooled control. The contradictory finding
between a waiting list control and the pooled control may be
due to the fact that there was only one trial that undertook the
comparison between TCM acupuncture and a waiting list control.
The trial [35] was small, which may increase the risk of
underpowered results.