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The COVID-19 pandemic has profound implications on the food and nutritional security of millions of households. The study assessed the impacts of the COVID-19 pandemic on diet diversity, calorie consumption and intake of essential nutrients based on the gender of the households.

Mixed-design ANOVA and logistic regression were used to analyze the collected data from 260 female- and 463 male-headed households through an online survey in Pakistan.

The outcomes revealed that the diet diversity of female households was affected more due to the COVID-19 compared to male households. The decline in daily nutrients' (protein, phosphorus, zinc, iron and iodine) intake during the COVID-19 was also greater for female-headed households than male-headed households. The share of all food groups in daily calorie and nutrient provision decreased significantly during the COVID-19 for both types of households. The share of meat and meat products declined more for female-headed households compared to male-headed households. The share of perishable commodities in calorie provision to female and male households decreased 2% during the COVID-19 compared to the normal period. Small- and medium-sized female and male households were less likely to experience worsened diet diversity than large-sized households during the COVID-19. Low-income compared to medium- and high-income female and male households were more likely to report declined food diversity during the COVID-19.

The data used in this study were collected through an online survey due to public health measures imposed in the country.

Despite the emergence of literature on the implications of the pandemic on food security, the studies related to the gender-based impacts of COVID-19 on diet diversity and nutritional intakes of necessary nutrients are still non-existent. The current study will add to the literature by filling this gap.

Emphasis on the potential roles diverse farm production systems could play in enhancing food consumption variety and nutritional well-being in rural developing countries has increased in recent times. However, there are paucities of empirical works connecting diversity in agricultural production and dietary diversity in Africa, and Nigeria in particular. The purpose of this paper is to, therefore, examine, among others, the causal link between farm production diversity and consumption of varied diets among farm households in Nigeria using a nationally representative panel data.

Unlike the simple food count measure, the authors adopt two-dimensional indices to assess food diversity, and estimated both fixed and random effects versions of panel data econometrics models with the two-dimensional indices as regressands.

Results show that food production system is less diverse with an average farm household consuming fairly varied foods across seasons. All the econometrics models estimated consistently established positive and statistically significant influence of farm production diversity on household dietary diversity. Higher food prices, especially rice and roots and tubers could substantially reduce dietary diversity with the negative effects likely to be more devastating for low-income farm households. The specificity of household being a net food seller had positive, although weak influence on dietary diversity.

The findings accentuate, among others, the need for strategies to promote farm production diversity, transform farm households to net-sellers of foods and enable them take advantage of food price signals to boost farm incomes as important pathway for diet quality improvement and reduction of food insecurity, malnutrition and related diseases in rural Nigeria

Obesity is a multi-factorial problem that develops from an interaction between diet, genetics, physical activity, medication, and other factors. This paper aims to examine the association between dietary diversity score (DDS) and obesity among adults of Ardebil.

This case-control study was conducted on 204 cases (obese and overweight participants) and 204 controls (healthy weight individuals) matched by socioeconomic status (SES), age (older than 30 years) and sex. Dietary intake was assessed using a 24 h food recall questionnaire. Data on physical activity and socio-demographic variables were gathered. DDS was computed based on the scoring of the 14 food groups recommended by the Food and Agriculture organization guideline.

The DDS of the obese group was higher (5.02 ± 1.02) than that of the healthy weight group (4.23 ± 1.18) (p < 0.001). There was a significant association between DDS and body mass index (BMI) in both groups of study, but this association was more significant in the obese group (β = 0.501, p = 0.021) than that of healthy weight group (β = 0.413, p= 0.042). Vegetable food group score in both groups of the study was associated with obesity inversely (p < 0.05).

This study was conducted for the first time in Ardabil city and the results showed for the first time that there is a relationship between dietary diversity and obesity. People with a higher dietary diversity score are more likely to be obese. In fact, this study for the first time proved that people who are obese have a more varied diet but less vegetables and fruits.

The purpose of this is study is to evaluate the diet quality in nine local government areas drawn from three states of the south-east geo-political zone of Nigeria.

A multi-stage sampling procedure yielded 1,200 women of childbearing age (15-49 years), who responded to a multi-pass 24-hour diet recall questionnaire at the household. Diet quality (DQ) was assessed using the “diet quality index international” (DQI-I) tool with a scale of 0-100.

Mean age of respondents was 28 ± 5.6 years and body mass index was 26.81 ± 4.8 kg/m². Majorities (96 per cent) were married, 53.2 per cent had complete secondary and 18 per cent post-secondary education, 41.7 per cent were traders, 14.3 per cent civil servants and 25.8 per cent were unemployed. Main staple foods included root and tubers, cereals, legumes and vegetables. The total DQ in the South-east was 58.8 ± 8.1 with a low “variety” (9.5 ± 3.0), poor “adequacy” (22.3 ± 4.7), good “moderation” (25.0 ± 3.8) and “overall balance” (2.0 ± 1.8).The total DQ in Imo, Enugu and Anambra were 58.6 ± 8.3, 58.8 ± 8.0 and 59.0 ± 8.1, respectively (P > 0.05).

The study was limited to three states in South-east Nigeria; it does not give a holistic view of the DQ of women of childbearing age in Nigeria.

The total DQ-I score revealed average overall DQ (59/100) for South-east. However, distinct patterns of low consumption of fruits and vegetables were identified. The need for national (and cross-continental) comparison of DQ using the DQI-I tool is hereby advocated.

Developed countries have devised guidelines for various eating habits, many of which simply recommend “eating various foods” without specifying how much food the individual should consume each day. The authors aimed to examine the relationship between the variety of food consumed and the probability of nutritional adequacy in middle‐aged Japanese.

In total, 215 subjects (102 men and 113 women) provided complete dietary records for seven days in each of the winter, spring, summer and autumn. Subjects were categorized into groups of five according to the amount of each food eaten per day, calculated energy, and nutrients in the food. Results were compared with respective indicators of nutrition defined by the Dietary Reference Intakes for Japanese (2010).

The percentage of overweight subjects was higher in the group that did not consume a wide variety of foods. Intake of energy, calcium, zinc, magnesium, vitamins B1, B2 and C were insufficient in the subjects who did not consume a wide variety of foods. Although a trend toward sufficient nutrient intake was observed in the group that consumed a variety of foods, the estimated average requirement for several nutrients such as calcium and zinc was below accepted standards for good nutrition.

The variety of foods eaten is related to the adequacy of intake levels of certain nutrients and to body mass index in middle‐aged Japanese subjects. Eating a wide variety of foods is important to ensuring adequate nutrient intake.

Transformation of smallholder agriculture from subsistence to more commercially-oriented production is one of the strategies advocated for improving rural households' food security and general welfare. The purpose of this paper is to assess potential differential effects of smallholder commercialization intensity on the different dimensions of food security.

Using household data from rural Tanzania, the study employed Tobit regression and Generalized Propensity Score (GPS) approaches to analyze smallholder commercialization intensity and associated food security effects.

Results show that smallholder commercialization has heterogeneous effects on the different dimensions of food security. Specifically, lower levels of commercialization are associated with lower food availability, access, utilization and stability. At higher intensities of commercialization, smallholders have higher food availability and access but modest improvements in food utilization and stability. Findings suggests that heterogeneous effects of commercialization on food security and the multi-dimensional nature of food security are important aspects to consider in the design of strategies to improve smallholder agriculture for enhanced food security and welfare.

It is important to point out that while food security is still a complex phenomenon, one that cannot be analyzed easily, so is commercialization. This study has used only one of the many definitions of commercialization.

Most existing literature on smallholder commercialization groups farmers into commercial and subsistence-oriented households. However, smallholders commercialize at various levels of intensity. This paper, conversely, analyzes the potential effects of different levels of commercialization on the various aspects of food security. Further, unlike extensive literature that focus on a narrow definition of food security, this paper expands the evidence of the implications of smallholder commercialization on the different dimensions of food security namely, food availability, access, utilization and stability.

This paper aims to assess Food Variety Score (FVS), Dietary Diversity Score (DDS) and dietary quality of collected complementary foods consumed in Jimma town, southwest Ethiopia.

Multi-stage stratified simple random sampling method was used to identify 384 children who were between 6 to 24 months of age living in Jimma town, Ethiopia. FVS and DDS were assessed based on 24 h recall method. Aliquot of infant’s diet samples were collected from randomly selected 30 household mothers feeding to 6-24 months aged children, and they are combined to get 15 samples by enquiring the ingredients similarly used in preparation. The major nutrients, anti-nutrients were determined with standard procedures. Further, nutrient adequacy and mean adequacy were determined for collected samples.

Results showed that mean FVS was 7.14 ± 4.07 (range 0 to 18) and DDS was 3.44 ± 1.75 (range 1 to 8). Consumption of diversified diet among the studied population significantly associated with residence areas of children’s (p = 0.001), age of the care taker (p = 0.001), occupation of care takers (p = 0.001), monthly income (p = 0.001), average money spent on food purchase per month (p = 0.001). Average mean adequacy of macronutrients (crude protein, crude fat and carbohydrate) was observed as 0.81, micronutrient (Fe, Ca, Zn) mean adequacy was 0.49 and Vitamin A adequacy was 0.34 for the complementary foods. All the complementary foods were reported mean adequacy of < 1 for macro and micro nutrients.

Studies on dietary diversity and dietary quality of the complementary foods were not documented in Jimma town, Ethiopia. The results of this study are highly useful to understand the complementary foods consumption pattern particularly in dietary diversity and food variety. Moreover, results obtained on dietary quality are very useful to recommend further development in complementary food preparations in the study area.

This purpose of this study was to assess dietary diversity among women of reproductive age (WRA) and the associations between consumption of a diversified diet and overweight/obesity statuses in Ekiti State, Nigeria.

Cross-sectional study of 207 WRA from six local government areas in Ekiti State, Nigeria, was done. A validated interviewer-administered questionnaire was used to collect data on sociodemographic characteristics, dietary intake and anthropometry. Dietary intake was assessed with 24-h dietary recall to calculate the Minimum Dietary Diversity Score for Women (MDD-W). Data were analyzed using descriptive statistics, Spearman rank correlation and Chi square test at α_0.05.

Majority of the participants (65.2%) were aged between 19 and 34 years, 58.5% were married and 49.8% had high school as their highest level of education. Mean MDD-W and body mass index (BMI) were 3.8 ± 0.9 and 25.46 ± 6.4 kg/m², respectively. All participants (100%) consumed foods from the “grains, white roots and tubers” group and majority also from the “meat and poultry” group (79.7%) but ranked low in the consumption of foods from other food groups. Many were overweight (34.8%), obese (14.0%) and a few (1.9%) had morbid obesity. MDD-W was significantly associated with marital status (X² = 7.7, P = 0.022) and BMI (X² = 11.4, P = 0.023) and had a weak positive correlation with BMI (r = 0.189, P = 0.007).

Study shows that both undernutrition and overweight/obesity coexist in the population, indicating a case of double burden of malnutrition (DBM) at a population level. However, further studies may be needed to investigate the extent of DBM at individual levels. Although there was a positive correlation between MDD-W and BMI, it cannot be used to predict causality. Study further reveals that the micronutrient intake of the WRA population in Ekiti is inadequate. Considering the importance of the 10 food groups highlighted in MDD_W to nutrition and health, the promotion of the consumption of foods from these food groups with more attention to the micronutrient-rich ones needs to be heightened.

Diet of participants was not diverse enough, indicating micronutrient inadequacy. Promotion of the consumption of a diverse diet, particularly from the food groups rich in micronutrient, needs to be heightened, while food groups high in calorie should be minimally consumed to forestall DBM.

Limited data are available in facilitating nutritional interventions in developing countries. The objective of this study is to assess the mean dietary diversity score (DDS)of Mbororo minority women in the Northwest region of Cameroon.

The study used the random sampling technique within the Mbororo minority communities (Adorates). A questionnaire on dietary diversity, including 461 Mbororo women, provided information on food consumed using the 24-h dietary recall method.

Various socio-cultural and economic characteristics of the Mbororo women affected the nutrient level of their diet. Moreover, starchy staples, vitamin-A rich vegetables and palm oil and milk and milk products were consumed by more than half of the Mbororo community. Family herd size showed a positive influence on the dietary habit of the Mbororo population. The mean DDS significantly increased (p = 0.001), as herd size increased from below 50 (3.9 ± 1.1) to above 100 (4.8 ± 1.2).

Most of the diet consumed by the Mbororo women were low in iron, making them susceptible to nutrition anemia. The diet of the Aku women was more deficient in micronutrients than their Jaafun counterpart. These results indicate suitable areas of intervention for any nutrition program that targets the Mbororo minority group of Northwest Cameron.

DDS can be used in assessing and classifying the population in rural communities according to the deficiencies in micronutrients of their diet.

The use of DDS to assess the nutrient quality of diets is frequently used to evaluate the prevalence of micronutrient deficiencies but has never been applied to Mbororo minority women.

Dietary patterns are important for the physical and psychological development of adolescents. The purpose of this study is to determine magnitude and severity of depression and its relation with diet diversity score (DDS) among adolescent high school students.

A cross-sectional study was conducted among 546 adolescents selected from schools using multistage sampling technique. Dietary intakes were assessed using a 24-h dietary recall, and depression severity and prevalence were assessed by PHQ-9A. A structured questionnaire was used to collect data. Linear regression analysis was used, and unstandardized beta (ß) coefficients with 95% confidence intervals (CI) were computed to determine the association of depression and its severity with dietary diversity score.

In all, 546 questionnaires were filled completely and consistently making a response rate of 97.3%. The dietary diversity score in 97 (17.8%) of the adolescents were between 1 and 3 (low dietary diversity score) but 259 (47.4%) scored greater than 6 (high dietary diversity score). Chi-square test revealed that with a decrease in DDS from highest to lowest level, the percentage of moderate to severe and severe depression slightly increased (3.4%). In addition, the percentage of moderate to severe and severe depression who consumed meat, fish and milk and dairy products slightly increased (3% and 3.2%). Multivariate adjusted regression analysis demonstrated that dietary diversity score was found to be inversely associated with depression severity and prevalence.

It was found that linear association between diet diversity and depression severity, and prevalence after adjustment for relevant con-founders. The study provided epidemiological evidence of a robust association of dietary pattern with depression symptoms' severity and prevalence in adolescents.