Blood natural killer activity is reduced in men with occupational stress and job insecurity working in a university.

Purpose: To examine the immune response to job strain and insecurity of 88 men working in a university, divided according to age and type of employment.

Methods: Anxiety, job strain, job insecurity and subjective symptoms were measured by questionnaires. Blood NK cytotoxic activity was determined by an in vitro method and lymphocyte subpopulations by flow-cytometry analysis.