This document provides an overview of stress and health from a psychology perspective. It defines stress as the physical, emotional, cognitive and behavioral response to threatening or challenging events. Stress can be caused by major life events, daily hassles, lack of control, pressure and conflict. Prolonged stress takes a toll on the body's immune system and is linked to health issues like heart disease, diabetes and cancer. Personality traits like optimism and social support networks can help mitigate stress. The document discusses various coping strategies like problem-focused coping and emotion-focused coping.