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• Participants are incrementally less likely to declare bad health when residing in Oyapock (French Guiana), Estarreja (Portugal), or the Caribbean Coast (Guadeloupe) as opposed to Tessekere (Senegal).
• Participants in Tessekere (Senegal) reported more consumption of '10. fish and shellfish' than participants in Estarreja (Portugal) and Caribbean Coast (Guadeloupe).
• The study titled 'Associations between dietary diversity and self-rated health in a transverse study of four local food systems (French Guiana, Guadeloupe, Portugal and Senegal)' was published in BMC Public Health in 2025.
• The study was conducted across four Human-Environment Observatories (OHM): OHMi-Tessekere (Senegal), OHMi-Estarreja (Portugal), OHM-Littoral Caraïbe (Guadeloupe), and OHM-Oyapock (French Guiana).
• A Kruskal-Wallis test found statistically significant differences in average household size (p < 0.01), ranging from large households (over 9 individuals) in Tessekere (Senegal) to small households (2 to 3 individuals) in the Caribbean Coast (Guadeloupe) and Estarreja (Portugal).
• In Estarreja (Portugal) and Oyapock (French Guiana), agriculture was an important activity for participants, while livestock farming was the most important occupation in Tessekere (Senegal).
• The study 'Associations between dietary diversity and self-rated health in a transverse study of four local food systems (French Guiana, Guadeloupe, Portugal and Senegal)' examines dietary diversity and self-rated health across four specific local food systems: French Guiana, Guadeloupe, Portugal, and Senegal.
• The study aimed to evaluate the relationship between food consumption and subjective health across four distinct socio-ecosystems in Portugal, Senegal, French Guiana, and Guadeloupe.
• The study interviewed 465 individuals aged 18 years and older from Senegal, French Guiana, Guadeloupe, and Portugal using 24-hour dietary recalls and non-probability sampling methods.
• The article 'Associations between dietary diversity and self-rated health in a transverse study of four local food systems (French Guiana, Guadeloupe, Portugal and Senegal)' is identified by the DOI https://doi.org/10.1186/s12889-025-21872-8.
• The majority of participants across all study regions reported preparing meals very frequently or all the time, with the highest frequency in Estarreja (Portugal) and the lowest (under half) in Tessekere (Senegal).
• The study conducted a transverse comparison of foods consumed in four local socio-ecosystems: French Guiana, Guadeloupe, Portugal, and Senegal, using 24-hour dietary recalls.
• The study authors conducted data collection and analysis in specific geographic fields: PD, AK, and EM in Senegal; RR, PJL, and MR in Guadeloupe; DD and JL in French Guiana; and JPB, EFS, NED, and MR in Portugal.
• The ranking of mean Dietary Diversity Scores by region, from highest to lowest, is Caribbean Coast (Guadeloupe), Oyapock (French Guiana), Estarreja (Portugal), and Tessekere (Senegal).
• The study conducted interviews and dietary assessments at four specific locations during 2023: OHMi Tessekere (Senegal) from 26/05/2023 to 20/07/2023; OHMi Estarreja (Portugal) from 23/03/2023 to 15/10/2023; OHM Littoral-Caraïbe (Guadeloupe) from 19/03/2023 to 27/09/2023; and OHM Oyapock (French Guiana) from 04/04/2023 to 21/06/2023.