An extensive search of the scientific literature identified 3,500 peer-reviewed publications that featured “meditation” as a key word. Yet, of these, only 135 (approximately 4%) fulfilled the very basic requirements of experimental evaluation, i.e. they were prospective trials using control groups and random allocation. Importantly, even within this subset of more rigorous studies, there is no convincing evidence that meditation has a specific effect. In fact within this set of randomised controlled trials (RCTs), there appeared to be an inverse relationship between methodological rigour and likelihood of an outcome that is favourable to meditation.