Objective: To determine access to traditional and indigenous foods (TIF) and the association with household food security, dietary diversity and women’s BMI in low socio-economic households.Design: Sequential explanatory mixed-methods design, including a random household cross-sectional survey on household food insecurity access (HFIA), household dietary diversity (HDD) and women’s BMI, followed by focus group discussions.Setting: Two rural and two urban areas of Botswana.Subjects: Persons responsible for food preparation or an adult in a household (n400); for BMI, non-pregnant women aged 18–49 years (n253).Results: Almost two-thirds of households experienced moderate or severe food insecurity (28·8 and 37·3 %, respectively), but more than half of women were overweight or obese (26·9 and 26·9 %, respectively). Median HDD score was 6 (interquartile range 5–7) out of a total of 12. A positive correlation was found between number of TIF accessed and HDD score (r=0·457;P<0·001) and a negative correlation between number of TIF accessed and HFIA score (r=−0·272;P<0·001). There was no correlation between number of TIF accessed and women’s BMI (r=−0·066;P=0·297). TIF were perceived as healthy but with declining consumption due to preference for modern foods.Conclusions: TIF may potentially have an important role in household food security and dietary diversity. There is need to explore potential benefits that may be associated with their optimal use on food security and nutrition outcomes.

In Botswana, traditional diets are gradually being replaced by westernized diets high in energy-dense and nutrient- poor, while micro nutrient deficiencies among the population remain. We determined the consumption of traditional and indigenous foods (TIF) and their contribution to nutrient intake among children and women in Botswana. TIF accounted for relatively high percentages of energy intake in children (41%) and women (36%) respectively. The mean intake of vitamin A in children and vitamin A and zinc in women was high from TIF compared to non-TIF. Research attention to determining the full potential of TIF in contributing to nutrition and health is warranted.

This article describes a conceptual framework for exploring sustainable diets, using a case study example of ongoing research in the Vaalharts region, a rural setting in South Africa. A qualitative research approach is followed with an integrated transdisciplinary mixed methods research design with multiple concurrent components employed during two sequential phases. A successful application of the framework is achieved through a collaborative team effort of researchers with qualitative and quantitative research expertise transcending different disciplines, as well as participation of community members throughout the research process. We demonstrate that transdisciplinary mixed methods research designs are essential to gain a better understanding of the complex concept of sustainable diets.

This study describes the causal powers of mechanisms in dynamic interplay with relevant contexts (socio-cultural-historical and interpersonal) by looking at the outcome patterns of a multigenerational food initiative from a critical realist perspective. Heuristic constructs taken from psychological, interactional, and group theories implied in the multigenerational initiative are discussed. Textual data, obtained from women (n = 104) from three generations in rural South Africa in 11 focus group discussions, were analyzed thematically to present outcome patterns. Findings illustrate the transformative potential of mechanisms, their interrelatedness on different levels, and the activation of a deeper level mechanism. Broad guidelines are proposed for sustainable intergenerational initiatives.