Skimming through chapter 12 I came across a section talking about how suggestion alone can cause skin rash that is similar to those produced by poison ivy. The study was done in 1962 by two Japanese physicians. They select 13 boys who have itchy red skin reaction when touched by poison ivy. In the first phase they touch the boys with harmless leaves but told them they were using poison leaves. The second phase the condition is reversed. Poison leaves were used but was told to be harmless. The result is that phase 1 causes all 13 kids skins rash because they were told they were touched by poison leaves. Phase 2 however only 2 out 13 boys show skin rash. I found this very interesting because this demonstrate the nocebo effect, beliefs can create reality. After reading this I've been wondering how far can this effect go? I mean does it only limits to poison leaves and skin rashes or it can apply to crazy thing like believing you're not sick and be cured just by believing.