Dr. Teresa Shamah-Levy is a nutritionist was graduated with a Master’s in Health Sciences with a concentration area in Epidemiology. She also has a Public Health PhD from Mexico's School of Public Health. She was Head of the Department of Nutrition Monitoring and currently is Director of the Center of Evaluation and Surveys of the National Public Health Institute in Mexico. She is a member of the National Researchers System. She has been the coordinator of several national nutrition surveys in Mexico (1999, 2006, 2012, 2016, 2018-19, and from 2020, the ENSANUT Continuous, 2021,2022 2023, and 2024); and other urban food consumption surveys (1995, 2002, 2013). She has advised national nutrition surveys in Venezuela and Ecuador and has been a consultant in establishing the Nutrition Surveillance System in Nicaragua. She has been an FAO UNICEF and PAHO consultant in different projects and for the National Council of Assessment of Poverty in Mexico (CONEVAL) in themes associated with food and nutrition education, the National Crusade Hunger Program, and dietary diversity and food security. Dr. Shamah has published 244 articles in indexed journals, 40 book chapters, 12 books, and several diffusion manuals. In 2012, she consolidated a food security group in Mexico from the perspective of access and consumption, where national and international researchers participate. As of 2021, the evaluation of water insecurity has been initiated.