Martin William Bloem

Johns Hopkins Bloomberg School of Public Health | JHSPH · Department of Environmental Health Sciences

In the face of global food and nutrition crises, incremental adjustment in existing technology is not enough; the future of food systems hinges on innovative solutions that can help achieve the Sustainable Development Goals (SDGs). Innovative approaches and opportunities for the transformation of food systems exist. ‘Innovations’ includes new produ...

Seasonality is a natural feature of wild caught fisheries that introduces variation in food supply, and which often is amplified by fisheries management systems. Seasonal timing of landings patterns and linkages to consumption patterns can have a potentially strong impact on income for coastal communities as well as import patterns. This study char...

The specific aim was to characterize retail purchases of red and processed meat and other major protein-rich foods in the U.S. and by state. Supermarket scanner data from grocery stores, supermarkets, and big box stores collected from 2017-2019 (NielsenIQ, New York, NY) was used to characterize retail purchases of red meat, processed meat, and othe...

Background Cash transfer (CT) programs are an important type of social protection meant to reduce poverty. Whether CT programs increase the risk of overweight and obesity is unclear. The objective was to characterize the relationship between CT programs and the risk of overweight and obesity in children and adults. Methods We searched articles in...

Background: The 2020 US Dietary Guidelines for Americans recommend that the US population consume more seafood. Most analyses of seafood consumption ignore heterogeneity in consumption patterns by species, nutritional content, production methods, and price, which have implications for applying recommendations. Objectives: We assessed seafood int...

Micronutrient deficiencies are a major cause of morbidity and mortality in low- and middle-income countries worldwide. Climate change, characterized by increasing global surface temperatures and alterations in rainfall, has the capacity to affect the quality and accessibility of micronutrient-rich foods. The goals of this review are to summarize th...

Background: Legumes are an inexpensive, healthy source of protein, fiber, and micronutrients, have low greenhouse gas and water footprints, and enrich soil through nitrogen fixation. Although higher legume consumption is recommended under US dietary guidelines, legumes currently comprise only a minor part of the US diet. Objectives: To characterize...

Background: To guide the transformation of food systems to provide for healthy and sustainable diets, countries need to assess their current diet and food supply in comparison to nutrition, health, affordability, and environmental goals. Objectives: We sought to compare Indonesia's food utilization to diets optimized for nutritional value and co...

Background Seafood has a nutritional profile that can be beneficial to human health, which gives it a role to play in healthy diets. In addition, because its production and harvesting can have fewer environmental impacts than some forms of animal protein, it can contribute to sustainable diets. However, the positive health and environmental outcome...

Seafood is a highly traded commodity and 71% of the United States (U.S.) supply is imported. This study addresses questions about imported seafood safety and compares risks of outbreaks and recalls across countries of origin, species, and stages of the supply chain. We found that where seafood comes from does not play a major role in risk. Risk is...

Dietary protein production from animals is a major source of greenhouse gas emissions, water use, and deforestation. Legumes are a rich source of protein but currently comprise a minor part of most human diets. Worldwide, the average consumption of legumes and meat is 21 and 112 g/person/day, respectively. Legumes are part of traditional diets in m...

Global and local food system transformation is necessary in order to ensure the delivery of healthy, safe, and nutritious foods in both sustainable and equitable ways. Food systems are complex entities that affect diets, human health, and a range of other outcomes including economic growth, natural resource and environmental resiliency, and sociocu...

The COVID-19 pandemic has increased food insecurity, especially among low-income Black and His¬panic families in the United States. Food insecurity is associated with poorer health and higher mortality in adults and greater risk of impaired cognitive development and behavioral problems in children. Pro-viding food for low-income families is an impo...

A worldwide shift from current diets to the planetary health diet proposed by the EAT–Lancet Commission would have direct implications for agricultural greenhouse gas (GHG) emissions. By modelling the trajectory of food from cradle to farm gate while accounting for international trade, we estimate that agricultural GHG emissions would decrease in 1...

Over the past decade, there has been growing interest in the development and production of plant-based and cell-based alternatives to farmed meat. Although promoted for their capacity to avoid or reduce the environmental, animal welfare, and, in some cases, public health problems associated with farmed meat production and consumption, little resear...

Objectives National food-based dietary guidelines (FBDGs) are adapted by governments reflecting their nation's food system and specific nutrition context, with varied approaches by country. Seafood is commonly included as one of many items in a “meat” or “animal-source” food group. It is currently unclear whether FBDG recommendations for seafood ar...

The Food Systems Dashboard brings together extant data from public and private sources to help decision makers understand their food systems, identify their levers of change and decide which ones need to be pulled.

Undernutrition, obesity, climate change, and freshwater depletion share food and agricultural systems as an underlying driver. Efforts to more closely align dietary patterns with sustainability and health goals could be better informed with data covering the spectrum of countries characterized by over- and undernutrition. Here, we model the greenho...

Never before has the world been faced with the vast number, scale and complexity of humanitarian crises than today. More people in more countries are being affected, and greater resources are required to save lives than ever before. Humanitarian crises have a wide range of consequences on global peace, economics, infrastructure, markets, food produ...

Despite considerable global progress against health-related Millennium Development Goals, gains made in different regions of the world have been uneven. 6.3 million deaths among children under age five, 289 thousand maternal deaths still occur each year, and 99% of these deaths occur in low- and middle-income countries (LMICs). Inadequate health sy...

Several strategic shifts are occurring in the field of HIV/AIDS globally. The approach to health care in general is moving from a focus on vertical programming for individual diseases toward more integrated health systems. SDG 3, good health and well-being, includes the commitment to end the HIV, malaria and TB epidemics and address non-communicabl...

Value chains are not a new concept and many working in agriculture and business have been utilizing not only the concept, but have put value chains into practical use. Yet very little has been done to ensure nutrition is included and linked into the chain. This is likely a reflection of the cross-disciplinary nature of food value chains (FVCs). The...

This third edition reviews the epidemiology, policies, programs and outcome indicators that are important and should go together to improve nutrition and health in low-middle income settings (i.e. a developing world). This greatly expanded third edition provides policy makers, program managers, students and scientists in the area of public health a...

Nearly all countries in the world today are burdened with malnutrition, manifesting as undernutrition, micronutrient deficiencies, and/or overweight and obesity. Despite some progress, efforts to alleviate malnutrition are hampered by a shortage in number, skills, and geographic coverage, of a workforce for nutrition. Here, we report the findings o...

Nutrition actions in emergencies continue to be critical to mortality reduction and to achieving broader humanitarian as well as livelihood goals in institutionally fragile environments. In the past decade, numerous innovations have enhanced the prevention and treatment of many forms of malnutrition; these include wider adoption of new food product...

Food security and nutrition play an important role in HIV and TB care and treatment, including for improving treatment outcomes, adherence and uptake of HIV and TB care. This AIDS and behaviour supplement on "Adherence to HIV and TB care and treatment, the role of food security and nutrition" provides an overview of the current evidence and knowled...

This paper reviews evidence on social and economic costs of tuberculosis. Key socio-economic consequences include stigma, social isolation, increased out-of-pocket expenditures for medical and non-medical costs and reduced income. Many of the financing methods that households use have long-term negative impacts and the poor are most vulnerable to t...

Support to health programming has increasingly placed an emphasis on health systems strengthening. Integration of prevention of mother-to-child transmission (PMTCT) and maternal and newborn child health (MNCH) services has been one of the areas where there has been a shift from a siloed to a more integrated approach. The scale-up of anti-retroviral...

Socioeconomic costs of HIV and TB and the difficulty of maintaining optimal treatment are well documented. Social protection measures such as food assistance may be required to offset some of the treatment related costs as well as to ensure food security and maintain good health of the affected individual and household. Programmes have started plac...

Retention in care and adherence to antiretroviral treatment (ART) are critical elements of HIV care interventions and are closely associated with optimal individual and public health outcomes and cost effectiveness. This literature review was conducted to analyse how the roles of clients in HIV care and treatment are discussed, from terminology use...

Integration of HIV and food security services is imperative to improving the health and well-being of people living with HIV. However, consensus does not exist on definitions and measures of food security to guide service delivery and evaluation in the context of HIV. This paper reviews definitions and indicators of food security used by key agenci...

To further reduce stunting in Southeast Asia, a rapidly changing region, its main causes need to be identified. Assess the relationship between different causes of stunting and stunting prevalence over time in Southeast Asia. Review trends in mortality, stunting, economic development, and access to nutritious foods over time and among different sub...

The Minimum Cost of a Nutritious Diet (MCNut) is the cost of a theoretical diet satisfying all nutrient requirements of a family at the lowest possible cost, based on availability, price, and nutrient content of local foods. A comparison with household expenditure shows the proportion of households that would be able to afford a nutritious diet. To...

Micronutrient deficiencies affect over 2 billion people worldwide, with profound implications for health, cognitive development, education, economic development, and productivity. Fortification of staple foods is a cost-effective strategy to increase vitamin and mineral intake among the general population. Rice is consumed by billions of people (>...

Linear programming has been used for analyzing children's complementary feeding diets, for optimizing nutrient adequacy of dietary recommendations for a population, and for estimating the economic value of fortified foods. To describe and apply a linear programming tool ("Cost of the Diet") with data from Mozambique to determine what could be cost-...

Many developing countries now face the double burden of malnutrition, defined as the coexistence of a stunted child and overweight mother within the same household. This study sought to estimate the prevalence of the double burden of malnutrition and to identify associated maternal, child, and household characteristics in rural Indonesia and Bangla...

Our specific aim was to characterize maternal knowledge of anemia and its relationship to maternal and child anemia and to behaviors related to anemia reduction. We examined the relationship between maternal knowledge of anemia and anemia in the mother and the youngest child, aged 6-59 months, in 7,913 families from urban slums and 37,874 families...

Stunting is highly prevalent in developing countries and is associated with greater morbidity and mortality. Micronutrient deficiencies contribute to stunting, and micronutrient-fortified foods are a potential strategy to reduce child stunting. To examine the relationship between the use of fortified powdered milk and noodles and child stunting in...

Food insecurity is common in developing countries and related to the physical well being of families. Household food insecurity is intended to reflect a household's access, availability, and utilization of food. The relationship between paternal smoking and household food insecurity has not been well characterized. The objective of this study was t...

The efficacy of micronutrient powders (MNP) in the treatment of anemia in moderately anemic children aged 6-24 mo has been clearly demonstrated. The evidence of the effectiveness of MNP in large-scale programs, however, is scarce. This article describes the program experience and findings of large-scale MNP distribution in refugee camps and in an e...

Anaemia is a significant global public health problem in developing countries with adverse health effects on young children. Household food insecurity, which reflects a household's access, availability and utilisation of food, has not been well characterised in relation to anaemia in children. To examine the relationship of household food insecurit...

The World Food Programme and the Office of the United Nations High Commissioner for Refugees organized a meeting of experts to discuss evaluation of micronutrient interventions under special circumstances, such as emergency and refugee situations. Multimicronutrient interventions for groups with higher needs may include home fortification products...

Micronutrient powder has been endorsed as an effective means to improve the micronutrient status of emergency-affected populations. To document the experience and findings of a cross-sectional assessment of the micronutrient powder program implemented as part of the emergency response to Cyclone Sidr. Micronutrient powder was distributed to 100,714...

Micronutrient powder is a potential strategy to improve iron status and reduce anemia in refugee populations. To evaluate the effect of the availability of home fortification with a micronutrient powder containing 2.5 mg of sodium iron ethylenediaminetetraacetate (NaFeEDTA) on iron status and hemoglobin in women and children in the Kakuma Refugee C...

To describe risk factors for clustering of anemia among mothers and children in Indonesia. An anemia cluster was defined as hemoglobin <12 g/dl in the mother and <11 g/dl in the youngest child, aged 6-59 months. Anemia clustering occurred in 4907 (18.3%) of 26 809 urban families and 12 756 (15.5%) of 82 291 rural families. Maternal overweight/obesi...

To examine the relationship between homestead food production and night blindness among pre-school children in rural Bangladesh in the presence of a national vitamin A supplementation programme. A cross-sectional study. A population-based sample of six rural divisions of Bangladesh assessed in the Bangladesh Nutrition Surveillance Project 2001-2005...

We characterized the relationship of the presence of an improved latrine with diarrhea and under-five child mortality in Indonesia. The proportion of rural and urban families, respectively, without an improved latrine was 52.1% and 16.2%, with a child with a history of diarrhea in the last 7 days was 8.2% and 9.7%, and with a history of under-five...

Dietary diversity is associated with overall quality and nutrient adequacy of the diet in low-income countries. We determined the association between dietary diversity and stunting among children aged 6-59 months in rural Bangladesh. In total, 165 111 under-fives who participated in the National Surveillance Project in 2003-2005 were included in th...

Anemia is common among children in developing countries and is associated with decreased cognitive and physical development. Iron-fortified foods may decrease child anemia. The objective was to describe the association between iron-fortified milk and iron-fortified noodle consumption and anemia in children aged 6-59 mo. Consumption of fortified mil...

Vitamin A supplementation reduces child morbidity, mortality, and blindness. The coverage of the national vitamin A programme and risk factors for not receiving vitamin A were characterized using data from the Bangladesh Demographic and Health Survey 2004. Of 3,745 children aged 18-59 months, 3,237 (86.4%) received a vitamin A capsule each within t...

In Bangladesh, rice prices are known to be positively associated with the prevalence of child underweight and inversely associated with household nongrain food expenditures, an indicator of dietary quality. The collection of reliable data on household expenditures is relatively time consuming and requires extensive training. Simple dietary diversit...

The global food supply system is facing serious new challenges from economic and related crises and climate change, which directly affect the nutritional well-being of the poor by reducing their access to nutritious food. To cope, vulnerable populations prioritize consumption of calorie-rich but nutrient-poor food. Consequently, dietary quality and...

To determine whether children in India who have a low intake of vitamin A-rich foods are at higher risk of malnutrition, anemia, and not receiving child health interventions. We analyzed data from the India National Family Health Survey, 2005-2006. Of 17 847 children (41.9%), aged 12-35 months, 7020 did not receive vitamin A-rich foods, based on 24...

Higher food prices increase the risk of vitamin A deficiency among preschool children in poor families, because a larger part of the household food budget is spent on grain foods and less on vitamin A-rich foods. Vitamin A supplementation is an important source of vitamin A for children. Our objective was to characterize coverage of the India natio...

Because the global financial crisis and high food prices affect food consumption, we characterized the relationship between stunting and nongrain food expenditure at the household level among children 0-59 mo old in Indonesia's rural and urban poor population. Expenditure and height-for-age data were obtained from a population-based sample of 446,4...

A global economic and financial crisis is engulfing the developing world, coming on top of high food and fuel prices. This paper assesses the impact of the crises on food consumption, nutrition, and health. Several methods were applied, including risk analysis using the cost of the food basket, assessment surveys, simulations, regression analysis u...

The global economic crisis, commodity price hikes, and climate change have worsened the position of the poorest and most vulnerable people. These crises are compromising the diet and health of up to 80% of the population in most developing countries and threaten the development of almost an entire generation of children ( approximately 250 million)...

In Bangladesh, poor rural families often deal with high food costs by purchasing primarily rice. Our objective was to characterize the relationship between household expenditure on rice and nonrice foods with maternal and child malnutrition. Food expenditure data and anthropometry were obtained in a population-based sample of 304,856 households in...

Reducing child malnutrition requires nutritious food, breastfeeding, improved hygiene, health services, and (prenatal) care. Poverty and food insecurity seriously constrain the accessibility of nutritious diets that have high protein quality, adequate micronutrient content and bioavailability, macrominerals and essential fatty acids, low antinutrie...

Reducing child malnutrition requires nutritious food, breastfeeding, improved hygiene, health services, and (prenatal) care. Poverty and food insecurity seriously constrain the accessibility of nutritious diets that have high protein quality, adequate micronutrient content and bioavailability, macrominerals and essential fatty acids, low antinutrie...

Food insecurity is common in developing countries and is related to the physical well-being of families. Household food insecurity is intended to reflect a household's access, availability, and utilization of food, but its relationship with child mortality has not been well characterized. To examine the relationship of a modified household food ins...

Clinical vitamin A deficiency is characterized by night blindness and greater morbidity and mortality. The aim of this study was to examine the relationships between household food expenditures and night blindness among nonpregnant women of childbearing age among families in the slums of Jakarta, Indonesia. In a cross-sectional study of 42 974 hous...