Chapter 14: Stress, Lifestyle, and Health

Stress is conceptualized as a dynamic process involving the appraisal of events as threatening or challenging, with primary appraisal determining perceived harm and secondary appraisal assessing available coping strategies. The physiological stress response activates the sympathetic nervous system through the fight-or-flight mechanism and engages the hypothalamic-pituitary-adrenal axis, which releases cortisol and other stress hormones that mobilize energy while potentially compromising immune function during prolonged elevation. Stressors vary in form and duration, ranging from acute traumatic exposure and major life transitions measured through the Social Readjustment Rating Scale to chronic occupational strain and accumulating daily irritations that may more accurately predict health deterioration. The chapter establishes how psychological stress contributes to psychophysiological disorders including cardiovascular disease, hypertension, and gastrointestinal dysfunction through psychoneuroimmunological pathways that suppress immune responses and accelerate cellular aging via telomere shortening. Effective stress regulation encompasses both problem-focused coping strategies that directly address stressors and emotion-focused approaches managing psychological reactions, with perceived control and social support networks serving as critical protective factors against adverse health outcomes. The chapter concludes by shifting toward positive psychology and well-being cultivation, demonstrating that happiness comprises pleasant daily experiences, meaningful engagement through personal strengths, and contribution to purposes beyond the self. Research indicates that strong interpersonal relationships and financial security up to moderate income thresholds correlate with sustained well-being, though individuals demonstrate hedonic adaptation to life circumstances over time. Key interventions for stress management include structured exercise, relaxation response techniques, and biofeedback-assisted self-regulation.