Global Food & Nutrition Inc. is a consulting firm working to protect food systems and bring enhanced, diversified foods to consumers, improving their nutrition and food security, helping individuals thrive and creating healthy families and communities.​


Nina Schlossman, PhD.

Founder & CEO

​Dr. Nina Schlossman is a leading food and nutrition expert with extensive experience in food value chain and product development, food security, food aid, food fortification, and nutrition throughout life cycle and across the range from undernutrition to obesity. She provides oversight and leads company strategy, technical assistance, research, evaluation, marketing and training services for private and public sector clients. She works with clients to create partnerships to improve the nutritional quality and diversity of the local food basket, and optimize multi-sectoral nutrition and food security programs. She conducts extensive research in these areas through clinical and field-based randomized controlled trials to test acceptability, efficacy, effectiveness, and cost effectiveness of products and program approaches. She has published extensively on food and nutrition and is an adjunct professor at Tufts University where she received her PhD in International Nutrition. She has a Master’s of Science in Nutritional Biochemistry and Metabolism and International Nutrition Planning from the Massachusetts Institute of Technology (MIT).

Mandy Bridges

Marketing & Communications Director | COO | Project & Research Manager

Mandy Bridges is in charge of GFN's marketing programs, brand management, and expanding the agriculture industry's reach through targeted marketing and messaging. Before joining Global Food and Nutrition Inc. Mandy Bridges served as Director to four companies before starting her own positioning and branding firm. She works hand in hand with communities to develop and test consumer solutions by conducting consumer and market surveys to determine acceptability of food products and implementing behavioral change programs to promote food diversity with high nutrition value. Her passion is to create and implement strategies that increase the skills, assets and market linkages for farmers, farm organizations and agribusinesses. She has also earned several accolades for providing support from graphic design to field work for various companies in multiple sectors. She studies public administration and policy at the Schar School of Policy and Government. She is focused on multi-sector and inter-agency policy and program work that addresses the variety of factors affecting health and nutrition status.

Quentin Johnson

Senior Food Technology Advisor

Quentin Johnson is an expert in milling and baking technology and food processing and brings to GFN 40 years of experience implementing staple food fortification programs. His expertise includes advocacy for fortification, technical assessments and plans for fortification, training workshops for the food industry and government regulatory bodies. He has extensive experience in new product development, quality assurance and regulatory affairs in food and medical device industries in North America and the United Kingdom. He has developed many new cereal-based products such as novel flours, flour milling systems, baked goods, baking ingredients, snack foods and modified atmosphere packaging in North America. In the field of quality assurance, he has written many quality manuals to meet ISO, HACCP and GMP requirements both in food and medical device industries. He is founder & CEO of Quican Inc. He holds an Honorary PhD from the University of Guelph in Canada.

Susan Roberts, PhD.

Senior Clinical Research Partner

Dr. Roberts serves as research partner on GFN's research activities. She is a professor of nutrition and psychiatry at Tufts University Friedman School of Nutrition Science & Policy, and senior scientist at the Human Nutrition Research Center on Aging (HNRC-A). She works with GFN on randomized-controlled trials and serves as principal investigator for multiple studies spanning topics from obesity to cognitive development and childhood malnutrition. She is an internationally recognized expert on nutrition and weight control. She is the author of Feeding your Child for Lifelong Health, as well as nearly 200 articles published in research journals including The New England Journal of Medicine, JAMA and The Lancet. Dr. Roberts has a PhD in Nutrition from the University of Cambridge in England.

Veronica Vargas, PhD.

Senior Health Economist

Dr. Vargas is a Health Economist with extensive experience in low to upper-middle income countries in Asia, Africa, Latin America and Eastern Europe. Her areas of expertise include: cost-effectiveness analysis, budgeting for results, pharmaceutical expenditures in maternal and child health/nutrition programming and policy. She led the evaluation of costs and cost-effectiveness of nutrition supplements for preventing and treating undernutrition. She served on the Scientific Panel of the International Health Economics Association (iHEA) and is a member of the Global Burden of Disease collaborator network. She received her PhD in economics from Greifswald University in Germany, and her Master's Degree in economic policy from Boston University.

Roberta Lauretti-Bernhart

Technical & Fair Trade Advisor

Roberta Lauretti-Bernhard began her career as a livestock extension agent for the Ministry of Agriculture of Guatemala as a Peace Corp Volunteer. Roberta has held senior agriculture and agribusiness advisor positions for both public & private agencies, foundations and businesses and her core competencies are supply chain management & production planning in multiple value chains: livestock, poultry, vegetables, coffee, and cacao. She is a certified Veterinary Technician and has extensive program management expertise with multiple donors: USAID, USDA, Bloomberg Philanthropies, Rotary International, Gates Foundation, DFID, Dutch, GAC, Rockefeller Foundation, etc. Roberta is a fluent Spanish speaker, and has extensive travel and work experience in 39 countries.

Abul Hashem

Business Development Consultant

Abul Hashem brings his experience in business and development and large-scale program implementation worldwide. His expertise includes strategic planning, organizational development, fund raising, project management, market analysis, partnership and capacity building, proposal writing, policy development, and supply chain management. He managed large and complex projects at global, regional, and country levels involving numerous subcontractors, partners and multi-disciplinary and multi-ethnic staff. He has worked across Africa, Asia, Eastern Europe, Latin America, the Middle East, and the South Pacific including conflict and fragile states such as Yemen, Afghanistan, Pakistan, Liberia, Northern Nigeria and Papua New Guinea. He succeeds at all levels, from grassroots to high profile policymakers and leaders. He worked for USAID, United Nations, private and non-profit organizations. Hashem received his Master’s Degree from University of Chittagong. He is president & CEO of Global Development Support LLC.​

David Pyle, PhD.

Senior Public Health & Nutrition Advisor

Dr. Pyle has worked in almost all aspects of nutrition and public health. He brings extensive expertise in community-based nutrition, maternal and child health and family planning programming, especially in the design and evaluation of cost‑effective and sustainable programs/projects. His research has focused on the process of going to scale, particularly in integrated community-based nutrition-related programs. He has extensive experience in nutrition programming and is an advocate and strong supporter of the need to make water & sanitation, infection control, fertility control, and agriculture integral parts of any program. Dr. Pyle has worked with USAID, World Bank, Asian Development Bank, UNICEF, Ford Foundation, Rockefeller Foundation, CARE, Save the Children, Concern Worldwide, Project Hope, and the Aga Kahn Foundation. He founded and currently manages a pre-medical fellowship program in community-based primary health care in India. He has a PhD from the Massachusetts Institute of Technology (MIT) in Political Science with a concentration in International Nutrition Planning.

Beatrice Lorge Rogers, PhD.

Senior Food Policy Advisor

Dr. Rogers is Professor of Economics and Food Policy and Director of the Food Policy and Applied Nutrition Program at the Friedman School of Nutrition Science and Policy, where she has been on the faculty since 1982. Prof. Rogers has over 30 years of experience promoting evidence-based policy and programs related to food security, food consumption, and nutrition in the developing world. She has been responsible for the design and implementation of national household income, expenditure, and consumption surveys in several countries, and has conducted many smaller scale surveys of household economic and consumption behaviors looking at the determinants of intra-household resource allocation and the effects of food price subsidies and agricultural policies on food consumption and nutrition. She has worked on estimating cost- effectiveness in food assistance programs in Ethiopia and Malawi. She recently served as PI of a study that focuses on how the effects of food aid programs can be made sustainable after the programs are closed (a 4 year, 4-country study). In addition to her work on the Food Aid Quality Review, she is working on a project to improve dietary data collection methods and promote the use of such data in policy-making.

Uli Locher, PhD.

Senior Evaluation & Policy Advisor

Dr. Locher is a leading expert in program and policy evaluations. His research deals with the interaction of education, migration and international development. He is an advocate for leveraging school feeding and other food security programs for school quality improvements and educational success. He has experience in the monitoring and evaluation of development programs for bilateral and multilateral agencies, and most recently has worked in the African nations of Guinée-Bissau and Republic of Congo. Dr. Locher held a long-term position as Associate Professor in the Department of Sociology at McGill University.

Michael Bernhart, PhD.

Senior Health Systems Advisor

​Dr. Bernhart has over 20 years of experience directing successful social development programs, primarily in health care. He is recognized for his work on improving quality and expanding access to health care, systems strengthening, behavior change, policy reform, community promotion, and training innovations. He directed one of the first health systems strengthening programs in population, the first large-scale community-based program on domestic violence and breast cancer in Jordan, women’s reproductive rights in Guatemala, expansion of access and improved service quality in Cambodia, maternal health in Pakistan, and the quality of healthcare in Indonesia. He also directed a program to strengthen rural cooperatives, an academic degree program in public sector management, and produced two public television series. He designs and implements innovative programs that reduce access barriers while improving cost recovery and service quality. Dr. Bernhart has a Master’s Degree and PhD from Massachusetts Institute of Technology (MIT).

Richard Lockwood, PhD.

Senior Human & Animal Nutrition Advisor

Dr. Lockwood brings extensive human and animal nutrition expertise and food aid experience to GFN. He worked with agricultural extension in Vietnam and supported the US Government's food aid programs in Brazil. He has worked on projects with the World Bank, UNICEF, the World Food Program, Harvard Institute for International Development and other development organizations. He holds an adjunct faculty appointment at Brandeis University in the Heller school for Social Policy and Management, teaching in the Sustainable International Development Program. Lockwood has published a number of papers and articles on international perspectives on nutrition and he is the co-author of a book, Methods for the Evaluation of the Impact of Food and Nutrition Programmes. Dr. Lockwood has a Bachelor’s Degree in Agriculture, a Master‘s Degree in Nutrition from Cornell University, and a PhD from the Massachusetts Institute of Technology (MIT) from the Department of Nutrition and Food Science. He is president & Technical Director of Lockwood Nutrition Service Inc.