The Social Readjustment Rating Scale, designed in 1967 by psychiatrists, Thomas Holmes and Richard
Rahe, evaluates the stress levels of important life changes (both planned and unplanned) and correlates
them with illness. The scale measures stress in Life Change Units (LCU) and has been used in
hundreds of studies on life change and illness onset.
To measure your stress according to the Holmes and Rahe Stress Scale add the number of "Life Change
Units" that apply to events you experienced in the past year. If the event occurred more than once,
multiply that number by the life change units. The cumulative score will give a rough estimation of your
potential risk for illness.