Undernutrition poses a serious health challenge in developing countries. Tanzania has the highest undernutrition burdens in East and Southern Africa. Poor infant and young child feeding practices including consumption of undiversified diet are the main cause for undernutrition. There is limited information regarding the association between dietary diversity and undernutrition in Tanzania. The objective of this paper was to examine to what extent the dietary diversity is associated with

more »

... ition of children of 6 to 23 months in Tanzania. Methods This is a secondary data analysis from data collected by the Tanzania Demographic and Health Survey of 2015-2016. Stunting, wasting and underweight were calculated from Z-scores based on 2006 WHO standards. A dietary diversity score was created by summing the number of food groups reported for each child by the mother ranging from 0 to 7. Then, a Minimum Dietary Diversity (MDD) indicator was used to assess the diversity of the diet given to children. Bivariate and multivariate logistic regression techniques were used to assess the odds ratios of becoming undernourished. Results A total of 2,960 children were enrolled in this study. The majority (73.9%) of children did not reach the recommended Minimum Dietary Diversity (MDD). The most commonly consumed types of foods were grains, roots and tubers (91%), and Vitamin A containing fruits and vegetables (65%). Consumption of a diverse diet was significantly associated with a reduction of stunting, wasting and being underweight in children. The likelihood of being stunted, wasted and underweight was found to decrease as the number of food group consumed increased. Children who did not received an MDD diet had a significantly higher likelihood of being stunted (AOR=1.37, 95% CI; 1.13-1.65) and underweight (AOR=1.49, 95% CI; 1.15-1.92), but this was not the case for wasting. Consumption of animal source foods has been found to be associated with reduced