that increased quantity and quality of education leads to benefits to both the individual and society (e.g. improved labor productivity). Health and economic outcome improvements can be seen in health measures such as blood pressure, crime, and market participation trends. Examples of interventions include decreasing size of classes and providing additional resources to low-income school districts. However, there is currently insufficient evidence to support education as a social determinants intervention with a cost-benefit analysis. Social Protection: Interventions such as “health-related cash transfers”, maternal education, and nutrition-based social protections have been shown to have a positive impact on health outcomes. However, the full economic costs and impacts generated of social security interventions are difficult to evaluate, especially as many social protections primarily affect children of recipients. The landmark Cochrane Collaboration Review of the health impact of unconditional cash transfers in low- and middle-income countries found a large body of evidence that these cash transfers clinically meaningfully reduce in the likelihood of being sick (by an estimated 27%), may also improve food security and dietary diversity, and may also reduce extreme poverty and improve school attendance, as well as increase healthcare spending. Urban Development: Urban development interventions include a wide variety of potential targets such as housing, transportation, and infrastructure improvements. The health benefits are considerable (especially for children), because housing improvements such as smoke alarm installation, concrete flooring, removal of lead paint, etc. can have a direct impact on health. In addition, there is a fair amount of evidence to prove that external urban development interventions such as transportation improvements or improved walkability of neighborhoods (which is highly effective in developed countries) can have health benefits. Affordable housing options (including public housing) can make large contributions to both social determinants of health, as well as the local economy, and access to public natural areas -including green and blue spaces- is also associated with improved health benefits. The Commission on Social Determinants of Health made recommendations in 2005 for action to promote health equity based on three principles: "improve the circumstances in which people are born, grow, live, work, and age; tackle the inequitable distribution of power, money, and resources, the structural drivers of conditions of daily life, globally, nationally, and locally; and measure the problem, evaluate action, and expand the knowledge base." These recommendations would involve providing resources such as quality education, decent housing, access to affordable health care, access to