Research & reports

Emmanuel Roux, David Himmelgreen · Futurum Careers · United States (Florida)

Well-being is closely tied to the food we eat and the places where it is grown; healthy soils produce nutrient-dense food that supports physical and mental health. For city residents, finding fresh, good-quality local food can be difficult. At 15th Street Farm in Florida, United States, Emmanuel Roux and Professor David Himmelgreen run an education project helping local families learn about their local food systems and make healthier food choices (2023).

Daniel R. George, Amy E. Ethridge · American Journal of Public Health · United States

A US article on nonprofit hospitals' community health needs assessments notes they are identifying a high prevalence of chronic diseases linked to poor diets, and have responded with nutrition-related initiatives such as farmers' markets and community gardens. It describes diverse strategies undertaken by the hospital-based community garden at Penn State Milton S. Hershey Medical Center, and offers implications and implementation guidance for other US hospitals.

Najma Abdullahi, Erika F. Werner, Patrick M. Vivier, Blythe Berger, Lauren Schlichting · PubMed · United States

A study using Rhode Island birth certificate data from 2015–2016 to evaluate whether proximity to food sources, rather than density, is associated with gestational diabetes mellitus (GDM) risk. Proximity analysis measured the distance from each pregnant person's home address to the nearest fast food restaurant, supermarket, and farmers market/community garden, and multivariable logistic regression tested the association between distance and GDM risk. Of 20,129 births meeting inclusion criteria, 7.2% (1,447) involved GDM. Distance to food sources varied by insurance type, education and race/ethnicity, but in the adjusted model there was no statistically significant association between distance to any food source and GDM.

Gabriela Rigote, Alessandra Xavier Bueno, Marco Akerman · Saúde e Sociedade · Brazil (São Paulo)

A qualitative study of seven women urban farmers in the eastern zone of São Paulo, Brazil, describing and analyzing everyday cooking practices and their relationship to the food system. Using narrated body maps - a creative visual research method in which participants drew their own body outlines - the study generated visual and oral data on the meanings of cooking, analyzed thematically. It found that cooking functions as a connector from field to table, mutually reinforcing urban and peri-urban agriculture practices, and serves as a tool promoting biopsychosocial wellbeing tied to social, economic and environmental sustainability.

Tailana Fraga Lima, Ana Maria Girotti Sperandio · Revista Brasileira de Tecnologias Sociais · Brazil

Using a bibliographic and documentary survey with secondary data analysis in a descriptive qualitative approach, this article systematically examines the challenges in the Brazilian population's diet posed by excessive consumption of ultra-processed foods. It discusses the relationship between agriculture in urban space and dietary readjustment and food insecurity, observing that urban agriculture can produce effects that contribute both to addressing the public health problem of hunger and to the use of urban space. It argues that occupying underused and idle sites in the city for garden development promotes integrated urban spaces accompanied by changes in eating habits and behaviors, aligned with urban planning aimed at a healthy city.

Nataliya Apanovich, Seth Asare Okyere, Stephen Leonard Mensah, Louis Kusi Frimpong · Societal Impacts · United States

This study examined societal benefits gained by university students participating in community-based learning through the University of Arizona Community Garden (UACG) in Tucson, Arizona, using interviews, participant observation and student activities. Findings showed the community garden provided psychosocial benefits, including social interaction and connection with nature, for the participating students.

Alexis R. Cole, Jennifer Pethan, Jason Evans · Nutrients · United States

An integrative review examines the potential role of teaching kitchens operated in collaboration with local agriculture — including farms, community gardens, vertical farms, and urban agriculture — against the backdrop of diet-related chronic disease in the United States. The paper reviews the current state of agricultural systems, the food-is-medicine concept, consumer behavior, and the roles of each sector, followed by case studies illustrating how gaps between teaching kitchens and agriculture programs have been addressed. It summarizes opportunities for combining teaching-kitchen and agriculture-program knowledge and resources, along with challenges that may arise.

Olivia G Bassetti, Rebecca A McDonough, Kabindra M Shakya · Environmental Monitoring and Assessment · United States (Philadelphia, Pittsburgh)

A 2023 study that sampled soils from 21 community gardens in Philadelphia city, the Philadelphia suburbs and Pittsburgh city, Pennsylvania, USA, in September–October 2021 and measured seven elements (Pb, Zn, Cu, V, Cd, Ni, As) by ICP-MS. City gardens had higher concentrations than suburban ones. All elements except vanadium fell below Pennsylvania Department of Environmental Protection guidelines, but against the stricter Canadian Council of Ministers of the Environment limit of 140 mg/kg for lead, 36% of Philadelphia city gardens, 60% of Pittsburgh gardens and 20% of Philadelphia suburban gardens exceeded it — so whether a garden counts as 'safe' or 'over the limit' depends on which standard is applied. In Philadelphia, concentrations generally fell with distance from historical smelter sites, though the correlation was significant only for zinc. Raised-bed soils were lower in lead and arsenic but often higher in zinc, copper, vanadium and nickel, which the authors attribute to ongoing deposition from road traffic and active industry rather than legacy contamination.

Superintendencia Nacional de Servicios de Saneamiento (SUNASS) · Superintendencia Nacional de Servicios de Saneamiento (SUNASS), Plataforma del Estado Peruano · Peru

Peru's sanitation services regulator (SUNASS) reported on 18 January 2023 that more than 635,000 people in Lima Metropolitana (6% of its population, including 180,000 children under 11) lack access to Sedapal's public drinking water network. Those without network access buy water from tanker trucks at 16-18 soles per cubic meter, up to six times the roughly 3 soles per cubic meter paid by network-connected users. SUNASS also published a district ranking of daily per-capita water consumption, with San Isidro highest at 280 liters and Lurigancho lowest at 32 liters.

Wells N., Myers B., Henderson C. · Preventive Medicine Reports (Elsevier) · United States

A two-year randomized controlled trial assigning 46 low-income elementary schools in Arkansas, Iowa, New York and Washington to school gardens with curriculum or a waitlist control. Children in the intervention increased fruit and low-fat vegetable consumption more than controls, supporting the effectiveness of school garden programs.

Colson-Fearon B., Versey H. S. · International Journal of Environmental Research and Public Health 19(19):12752 · United States

Case study examining urban agriculture as a sustainable strategy against food insecurity in Baltimore, finding it builds social capital, educates residents on healthy eating, and facilitates distribution of affordable food toward food sovereignty.

Cosco N.G., Wells N.M., Zhang D., Goodell L.S., Monsur M., Xu T., Moore R.C. · Frontiers in Psychology, 13:993637 · United States (North Carolina)

An RCT of the Preventing Obesity by Design (POD) garden intervention in 15 Wake County childcare centers serving ages 3–5. Using a waitlist-control design, it tests effects on fruit and vegetable identification, liking and snack-time consumption, demonstrating collaborative garden-based outdoor learning in early childhood settings.

Celina L. Martinez, Daisy Rosero, Tammy Thomas, Francisco Soto Mas · Health Promotion Practice · United States (New Mexico)

This qualitative study assessed how community-supported agriculture (CSA) contributes to human capital and addresses social determinants of health in central and northern New Mexico, using questionnaires with 13 purposively sampled CSAs (8 responded). The responding CSAs reported activities such as training, job creation, education, access to healthy food, food security, health education, social connections, and food justice. The authors argue public health should support CSA and generate evidence on its health and social benefits.

· Landscape and Urban Planning · Canada (Edmonton)

A survey of 90 Edmonton community gardens; gardeners missed social events like pot-lucks and harvest fests yet reported that gardens provided social resilience during the pandemic.

Joshua Newell, Alec Foster, Mariel Borgman, Sara Meerow · Cities · United States (Detroit)

A study in Detroit's Lower Eastside (~15 sq. miles) examined the spatial extent, characteristics, and residents' perceptions of urban gardens using spatial analysis and interviews. Gardens covered less than 1% of vacant land and were often ephemeral. Primary obstacles to scaling up urban agriculture in Detroit include uncertainty over land tenure, environmental pollutants, potential ecosystem disservices, and a lack of government support and capital investment.

Yujia Zhang, Jordan P. Smith, Daoqin Tong, B. L. Turner · Landscape and Urban Planning · United States (Phoenix)

A model was developed to optimize the co-benefits of food desert and urban heat mitigation through community garden planning, applied to over 5,000 vacant parcels in the Phoenix metro-area, USA. The study found that the optimal number and locations of community gardens needed for different mitigation goals can vary significantly. The existing 76 community gardens were mostly clustered around urban cores, leaving two-thirds of the metro-area underserved, but spatially optimized siting could double the co-benefits gained and cover more high-need neighborhoods.

Marc François Richter, Luiza Vigne Bennedetti, Bruna Raquel Rodrigues Teixeira, Maico Ismael Klein, Angélica Gomes Florczak dos Santos · Confins · Brazil

This study mapped the concepts and benefits of urban gardens globally and in Brazil, presenting the history of urban agriculture and its modalities. A systematic literature review via Portal periódicos da CAPES corroborated various social, environmental, and economic advantages. In recent decades, Brazil has implemented federal, state, and municipal policies to support community garden projects, aiming to reduce poverty and ensure food security.

Janet Music, Lisa Mullins, Sylvain Charlebois, Charlotte Large, Kydra Mayhew · Humanities and Social Sciences Communications · Canada

This study compared 19 municipal urban home food gardening programs in Canada in 2020, which provided free gardening supplies and instructions. It found a complicated relationship between municipalities, gardening programs, and food security, and determined that gardening somewhat alleviated social and emotional challenges from the COVID-19 pandemic. However, municipalities are limited in their policy capacities to adequately address food insecurity in Canada.

Saria Lofton, Marjorie Kersten, Nanyombi Lubimbi, Angela Odoms‐Young · Journal of Community Practice · United States

This study used Chaskin’s relational framework to describe community capacity-building efforts to enhance urban agriculture in predominantly Black communities. Strategies identified for community capacity building in urban agriculture included building on existing resources, community engagement, expanding organizational capacity, identifying threats, and identifying ideal solutions. These strategies were identified by urban farmers, gardeners, and advocates to strengthen local control of the food environment through sustainable urban agriculture.

Julie Cornfield, Harmonii Odinga, Jaleh Kermani, Katherine P. Theall, M. Pia Chaparro · American Journal of Health Promotion · United States (New Orleans)

An environmental assessment of 10 community gardens and interviews with 20 community members and administrators in New Orleans, Louisiana, explored factors affecting garden use. Gardens scored high in design and cleanliness but low in accessibility and information availability. While community members perceived gardens could increase fresh food access, administrators believed gardens could not produce enough food for community-wide impact, emphasizing social benefits instead.

Sarah Elton, Donald C. Cole · Food Culture & Society · Canada (Toronto)

This paper analyzes mixed methods data from Toronto, Canada, generated pre-pandemic, to understand the role of urban agriculture in gardeners' lives. It found that gardening supported health and wellbeing and provided an important, often culturally significant, food source for participants. The study argues that gardens are essential and should be viewed as part of culinary infrastructure, prompting policy decisions that support nonmarket food sources during crises.

Tomasz B. Falkowski, Bethany Jorgensen, Donald A. Rakow, Ashmita Das, Stewart A.W. Diemont, Theresa Selfa, Austin B. Arrington · Frontiers in Sustainable Food Systems · United States

A study in four New York cities analyzed the benefits and challenges of community gardens during the COVID-19 pandemic through surveys and semi-structured interviews with community gardeners. Gardeners experienced benefits such as connection, mental and physical well-being, and a safe refuge, but the biggest challenge was limited socializing due to personal behavioral changes and garden rules. This research suggests that while community gardens can be resilient sites of reprieve during crises, the pandemic also exposed their vulnerabilities.

Mona Khalil, Carolyn Bolton‐Moore · Current Developments in Nutrition · United States

This study investigated whether a ten-week Garden Enhanced Nutrition Education (GENE) program increased skin carotenoid scores, a measure of vegetable consumption, in 30 diverse, low-income children aged 6–13 at two Boys and Girls Clubs of Greater Houston in fall 2021. While individual skin carotenoid scores increased in 43% of participants and group averages showed an upward trend, these changes were not statistically significant. Height and weight increased significantly, and 49.7 pounds of produce were harvested.

Ana Maria Girotti Sperandio, Bárbara Bonetto, Tailana Fraga Lima, Jussara Conceição Guarnieri · PIXO - Revista de Arquitetura Cidade e Contemporaneidade · Brazil

This descriptive, qualitative, and exploratory study examines urban farming initiatives in small cities during the COVID-19 pandemic, focusing on Conchal/SP, Brazil, as an example of healthy city practices. The research aims to identify convergences between urban farming and healthy city premises to address the pandemic's consequences and contribute to urban planning in small cities. It suggests that urban farming and the recovery of urban vacant spaces in community projects can be considered for addressing food insecurity exacerbated by the pandemic within urban planning.

M. Sitaker, S. Ennett, C.E. Walsh, R. Seguin-Fowler, J. Kolodinsky, A. Ammerman, K. Hanson, S.B. Pitts Jilcott · UNC Libraries · United States

This exploratory study investigated associations between snack foods, sugar-sweetened beverages (SSB) consumption, and overweight and obesity in children from low-income households. Data from 305 households participating in a multi-state cost-offset (CO-CSA) intervention in 2016 and 2017 were analyzed. No associations were found between snack or SSB consumption and child overweight.