Abstract
<jats:p>Low dietary diversity is a risk factor for micronutrient deficiencies. Agricultural interventions that support crop production and livestock rearing may promote dietary diversity and achieve better nutritional outcomes, particularly among low-income households. Their effectiveness may be strengthened when integrated within microfinance platforms. The objective of this study was to estimate the association between an agricultural intervention delivered within a group-based microfinance program and dietary diversity in rural Western Kenya, and determined effect modification by sex. We conducted a cross-sectional design from June to August 2025 in two village wards of Webuye sub-County in rural Western Kenya, using a validated dietary diversity scale to assess the total number of food groups consumed in the previous 24 hours. We interviewed 312 microfinance participants, 156 of whom were in agricultural intervention comprised of farm input subsidies and training, while 156 were not in the intervention. We specified modified Poisson models to estimate the association between intervention receipt and dietary diversity, and tested whether the estimated association differed by sex. Participation in the agricultural intervention was associated with higher diversity among microfinance program members [adjusted PR (95% CI): 1.46 (1.02, 2.06)]. We did not find evidence that the association differed by sex (Wald p-value for interaction term=0.83). Participation in an agricultural intervention was associated with improved dietary diversity. Future prospective using large samples studies should build on these findings to establish temporal ordering, and assess the feasibility and sustainability of integrating agricultural support into microfinance platforms to improve dietary diversity in low-resource settings.</jats:p>