A growing body of research on conditions from bipolar disorder to schizophrenia to depression is starting to suggest a tighter link than was previously realized between ailments of the mind and body. Activation of the immune system seems to play a crucial role in both.”We just didn’t understand how much of a role the immune system plays in how we think and feel and act,” says Andrew Miller, a professor of psychiatry at Emory University. “An overactive immune system or when there’s something going on in the immune system, it can have consequences on the brain.”

via Immune system may play crucial role in mental health.