This document discusses a lecture on social determinants of health. It defines social determinants of health as the conditions where people live, learn, work and age that affect their health. These include cultural, socioeconomic, living/working conditions and social/community networks. The lecture emphasizes that health promotion must address the root social and environmental causes of poor health. Improving living standards, equitable access to resources, and measuring health inequities are key to promoting population health. The document provides examples of how policies, environment, gender and other social factors act as determinants of health conditions and outcomes.