{ "background": "Iron deficiency anaemia remains a critical public health challenge for pregnant women in sub-Saharan Africa. In Mali, despite the availability of nutrient-dense traditional foods like offal, cultural perceptions and taboos often limit their consumption during pregnancy, necessitating innovative behaviour change communication strategies.", "purpose and objectives": "This case study assessed the effectiveness of a participatory video intervention designed to shift perceptions and increase the consumption of iron-rich offal among pregnant women in the Sikasso Region. The primary objective was to evaluate changes in knowledge, attitudes, and reported dietary practices following the intervention.", "methodology": "We employed a mixed-methods, longitudinal case study design. A cohort of pregnant women participated in community-based workshops where they co-created and viewed videos addressing local offal taboos and nutritional benefits. Data were collected via structured questionnaires and focus group discussions pre- and post-intervention. Changes in consumption frequency were analysed using a generalised linear mixed model: $\\log(E(Y{it})) = \\beta0 + \\beta1 Tt + \\beta2 Xi + ui$, where $Y{it}$ is the weekly consumption count for individual $i$ at time $t$, $T$ is the post-intervention indicator, $X$ represents covariates, and $u_i$ is the individual random effect.", "findings": "The intervention was associated with a significant positive shift. The proportion of women reporting weekly offal consumption increased from 22% to 67% post-intervention. Qualitative data revealed a strong theme of increased agency, with women describing newfound confidence to advocate for these foods within their households. The model estimated a mean increase of 1.8 weekly servings (95% CI: 1.4 to 2.2).", "conclusion": "Participatory video proved to be a potent modality for addressing deeply rooted food taboos and promoting the intake of locally available, nutrient-dense foods among pregnant women in this setting.", "recommendations": "Nutrition