Sustainable dietary weight loss intervention for the prevention of type 2 diabetes: A family-based, randomised, controlled trial with overweight and obese adults in Ouagadougou, Burkina Faso


Climate change mitigation, sustainable diets, obesity, diabetes mellitus, urban, adults


Burkina Faso


The global obesity epidemic and its adverse health effects have reached sub-Saharan Africa. In some urban settings, like Burkina Faso's capital Ouagadougou, up to 43% of the adult population are overweight or obese. At the same time, modernised food systems are responsible for 26% of global greenhouse gas emissions, 50% of land use and 70% of freshwater use. International guidelines on the treatment of overweight and obesity recommend dietary intervention programmes that promote reduced calorie intake and increased physical activity. So far, weight loss interventions rarely consider sustainable dietary concepts, including healthfulness, affordability, cultural appropriateness and environmental friendliness. Therefore, we conducted a family-based, randomised, controlled trial (RCT) for the effects of a sustainable weight loss intervention on cardiometabolic, environmental, and economic outcomes in urban Burkina Faso.


The project consists of three phases: i) formative and co-design phase using qualitative and quantitative methods, incl. in-depth interviews about the perceptions of healthy and environmentally friendly diets as well as exploratory dietary pattern analysis to describe prevailing dietary practices, ii) implementation and impact evaluation of the RCT, comparing a 6-month sustainable dietary weight loss intervention programme (n=125) with standard weight loss information material and 5 min oral counselling (n=125) (intervention phase: 0-6 months; consolidation phase: 7-12 months), and iii) process evaluation, incl. qualitative impact mapping through focus group discussions (FGDs), cost-effectiveness and budget impact analysis.

Main Cooperation Partners

  • Prof. Abdramane Soura and Dr. Roch Modeste Millogo, Institute Supérieure des Sciences de la Population, University of Ouagadougou (ISSP), Ouagadougou, Burkina Faso
  • Dr. Alina Herrmann, Heidelberg Institute for Global Health (HIGH), Heidelberg University, Heidelberg, Germany
Main Funding Partners

Robert Bosch Foundation (RBS) – Robert Bosch Junior Professorship 2019


  • Weil K, Coulibaly I, Fuelbert H, Herrmann A, Millogo RM, Danquah I. Dietary patterns and their socioeconomic factors of adherence among adults in urban Burkina Faso: a cross-sectional study. J Health Popul Nutr. 2023 Oct 10;42(1):107. doi: 10.1186/s41043-023-00451-w.
  • Herrmann A, Gonnet A, Millogo RM, d'Arc Kabré WJ, Beremwidougou TR, Coulibaly I, Ouili I, Zoromé S, Weil K, Fuelbert H, Soura A, Danquah I. Sustainable dietary weight loss intervention and its effects on cardiometabolic parameters and greenhouse gas emissions: study protocol of a randomised controlled trial with overweight and obese adults in Ouagadougou, Burkina Faso. BMJ Open. 2023 Apr 4;13(4):e070524. doi: 10.1136/bmjopen-2022-070524.
  • Herrmann A und Danquah I (2022). Klimawandel und Gesundheit aus Globaler Perspektive. DIVI Jahresbuch 2022/2023. MMV Medizinisch Wissenschaftliche Verlagsgesellschaft.
Duration of the Project

5 years (01 Jul 2019 – 30 Jun 2025)


  • Prof. Dr. Ina Danquah
  • Anaïs Gonnet (project coordinator)
  • Konstantin Weil (candidate Dr. med.)
  • Hannah Fülbert (candidate Dr. med.)
  • Dorothee Liu (candidate Dr. med.)


Ina Danquah

Prof. Dr. Ina Danquah


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