María Sandín Vázquez is an Associate Professor at Alcalá University (Madrid, Spain), a researcher in the Public Health and Epidemiology Research Group, School of Medicine (Madrid, Spain), and a Collaborator Professor in the Department of Community Health and Social Sciences, Graduate School of Public Health and Health Policy (New York, USA). She is also the coordinator of the “UAH Universidad Saludable” group. She teaches graduate courses in public health, research methods, community health, and health promotion. She is interested in health promotion and health inequalities associated with class or gender. Her research lines focus on social inequality in regard to health, gender and social classes, through qualitative methods. Some of her recent projects include research on urban health, alcohol environment and health assets, always using qualitative approaches. She has also carried out several investigations with photovoice methodologies. Her most recent publications are “Changes in perceptions of the alcohol environment among participants in a Photovoice project conducted in two districts with different socio-economic status” in PLOS One and “Residents' perceptions of the alcohol environment: A participatory photovoice project in two districts with different socio-economic status in a large city” in Health and Place.