Global health crises influence economic behavior not only through supply chain disruptions but also through psychological reactions such as fear, uncertainty, and consumption anxiety. These emotional responses alter purchase frequency, brand loyalty, perceived product risk, and decision-making processes across cultural and socioeconomic contexts. This research explores how global health emergencies—such as COVID-19, Ebola, SARS, and Zika—reinterpret consumer behavior through behavioral economics, risk perception theory, and public health psychology. The paper proposes the Crisis-Induced Consumption Anxiety Framework (CCAF) to analyze how emotional stressors shift consumption priorities across essential goods, healthcare products, digital services, and discretionary categories. Implications for policy, marketing ethics, and crisis communication strategies are discussed.