The ultimate cause of the nocebo effect, however, is not neurochemistry but belief. According to Hahn, surgeons are often wary of operating on people who think they will die - because such patients often do. And the mere belief that one is susceptible to a heart attack is itself a risk factor. One study found that women who believed they are particularly prone to heart attack are nearly four times as likely to die from coronary conditions than other women with the same risk factors.
Interesting if some what scary, the link between the Brain and Body and how believe and thoughts affect the body is a rather interesting one. I think I'll have to keep an eye out for more information on this.
Any one else know of or have links to interesting research or posts related to this?