Mind and body: Scientists identify immune system link to mental illness

[Northerner]

Children with high everyday levels of a protein released into the blood in response to infection are at greater risk of developing depression and psychosis in adulthood, according to new research that suggests a role for the immune system in mental illness. The study indicates that mental illness and chronic physical illness such as coronary heart disease and type 2 diabetes may share common biological mechanisms.

http://www.sciencedaily.com/releases/2014/08/140813174233.htm