Association between consumption of edible insects with dietary diversity, and household food and nutrition security in southern Zimbabwe

Edible insects are nutritious with potential to improve nutritional outcomes and livelihoods in low-income countries. However, it is not clear whether consumption of edible insects is positively correlated with improved dietary diversity and food security indicators. Therefore, this cross-sectional study was designed to investigate the relationship between consumption of edible insects and diet diversity and food security indicators among children and adults from Gwanda district, Matabeleland province in Southern Zimbabwe. The survey collected data on the following; household sociodemographic characteristics, household dietary diversity score (HDDS), food consumption score (FCS), and child dietary diversity score (CDDS). Logistic regression was used to examine the associations between edible insect consumption and food security indicators. A total of 303 households were surveyed. A high proportion were edible insect consumers (80.9%) and the rest non-consumers (19.1%). The most consumed insect was mopani worms (Gonimbrasia belina, madora, amacimbi) (74.8%). The consumption of mopani worms was highest in the age group 20-49 years (34.4%) and significantly associated with being married and age of the household head. There was no difference between the mean CDDS for consumers (5.9±1.7) and for nonconsumers (6.0±2.0) (p=0.802). The median (IQR) FCS for consumers was lower at 49 (35, 65) than for non-consumers 53 (36.5, 64). This difference was not statistically significant (p=0.526). There also was no difference between the average HDDS for consuming households (6.2±1.7) and for non-consuming households 6.2±1.5 (p=0.866). There was no significant association between consumption of edible insects and CDDS (p=0.802), HDDS (p=0.866), and FCS (p=0.585). In conclusion, this study showed that Gonimbrasia belina (mopani worms, madora, amacimbi) were the commonly consumed insect mostly as relish due to their palatable taste. Overall, the consumption of edible insects did not seem to improve diet diversity and food security indicators in this setting. National level studies with bigger sample sizes that investigate the contribution of edible insects to overall nutrient intake and dietary diversity are required. Furthermore, interventions to promote the consumption of edible insects, including their commercialization should adopt a social ecological approach to maximise impact.