Bousso N. C. auteur aut IRD Brehmer Patrice auteur aut IRD Kane C. auteur aut IRD Quack B. auteur aut IRD Ndiaye W. N. auteur aut IRD Diadhiou H. D. auteur aut IRD Diedhiou F. auteur aut IRD Waeles M. auteur aut IRD text journalArticle eng text/pdf born digital access Seaweeds are a promising dietary resource because they contain essential trace elements. Meristotheca senegalensis and Hypnea musciformis are two economically important seaweeds in the coastal regions of Senegal. However, they can bioaccumulate potentially toxic trace elements, such as arsenic (As), cadmium (Cd), and lead (Pb), posing potential health risks. This study analyzed the elemental composition of these seaweeds and assessed their health risks using estimated daily intake (EDI), target hazard quotients (THQ), hazard index (HI), and carcinogenic risk (CR) for both children and adults across multiple consumption levels (0.100, 2.00, 4.00, and 8.00 g day-1). Cd concentrations exceeded the toxicity thresholds in all samples, and As was the primary contributor to carcinogenic risk in nearly all scenarios. 0.100 g day-1 intake posed no significant long-term risk for adults, while it presented carcinogenic risks for children depending on the collection site. These findings emphasize the need for site-specific monitoring and the development of safety guidelines to support the sustainable integration of seaweed into food systems within Africa's emerging blue economy. specialized Seaweed consumption Risk assessment Trace elements Toxic metals Minerals Senegal SENEGAL ATLANTIQUE 038 034 054 050 218 118129 [15 p.] 2025 0025-326X https://www.documentation.ird.fr/hor/fdi:010094165 10.1016/j.marpolbul.2025.118129 0025-326X [F B010094165] https://www.documentation.ird.fr/hor/fdi:010094165 https://www.documentation.ird.fr/intranet/publi/2025-07/010094165.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2025-07-15 2025-11-04 fdi:010094165 fre