The relationship between dietary micronutrients intake and cognition test performance among school-aged children in government-owned primary schools in Kumasi metropolis, Ghana

Factors associated with food consumption and dietary diversity among infants aged 6-18 months in Ashanti Region, Ghana

BACKGROUND

Studies have reported a poor diet quality among children in Ghana and other developing countries. Inadequate dietary diversity among children may lead to deficiencies in micronutrient intake necessary for growth and other cognitive functions. Understanding factors associated with infants' diverse diets is a key step to promoting adequate infant and young child nutrition. This study sought to determine the factors associated with food consumption and dietary diversity (DD) among infants.

METHODS

In this cross-sectional study among 1503 mothers-infant (aged 6-18 months) pairs from rural, urban, and peri-urban districts of Ashanti Region, factors associated with food consumption and DD were evaluated. The FAO 18-food group DD questionnaire was used to determine previous food group intake, while a structured questionnaire was used to capture data on the mother's socio-demographic parameters and child morbidity. Data were analyzed using descriptive statistics, the Chi-square test, and binary logistic regression to compare mothers and infants who had adequate and inadequate DDS of 9 out of 18 food groups and the predictors of dietary diversity.

RESULTS

About 64.7% of the infants did not meet the minimum dietary diversity. Over two-third (77.4%) of the children consumed maize porridge the previous day. Foods which were less consumed included vegetables (35%), animal milk (38.9%), and meat (organ 14%, any meat 26%). The mean food group intake from 18 food groups was 7.0, and the majority (64.7%) did not meet the recommended 9 food group intake. Significantly more younger children (6-11 months) (74%, p<0.001) compared with older children (12-18 months) (52.5%) did not meet the minimum DDS. Also compared with the older children, the younger ones had above two times increased odds of inadequate DD (OR = 2.5, p<0.001, 95% CI = 1.4-4.4). When controlled for gender, children from peri-urban areas (OR = 5.2, p = 0.260, 95% CI = 0.2-93.2) and rural areas (OR = 1.8, p = 0.650, 95% CI = 0.2-9.3) had increased odds of lower DD than urban children. Children of unemployed caregivers had an increased odds of low DD (OR = 2.3 p<0.001, 95% CI 1.7-3.2) compared with children of employed caregivers. Finally, children of caregivers with better nutrition knowledge (nine correct answers from 12 questions) had lower odds of having lower dietary diversity (adjusted OR = 0.9, p = 0.85, 95%CI = 0.5-1.6) than those with less knowledge.

CONCLUSIONS

Low DD was common among infants and associated with infants age, caregivers' areas of residence, employment status, and level of nutrition education. Children who did not meet the minimum dietary diversity were not fed particular foods such as vegetables, animal milk, and organ meat. Proper maternal nutrition education and feeding practices targeting age-specific needs and community livelihood support systems are necessary to improve dietary diversity of infants.

The Effect of a Turkey Berry (Solanum torvum)-Fortified Biscuit on the Hemoglobin Level and Cognitive Performance of Adolescent Females in the Ahafo Region of Ghana: A Pilot Study

Anemia is a public health problem that affects about 50% of adolescent females in sub-Saharan Africa. Anemia can negatively affect the overall growth, cognitive performance, and productivity of school-going adolescents. This pilot study assessed the impact of Solanum torvum-fortified biscuits on hemoglobin levels and cognitive performance of school-going adolescent females. A cluster randomized controlled, open labeled trial was undertaken among four basic schools in the Ahafo Region of Ghana. Out of the 169 participants, 151 (intervention = 83, control = 68) adolescent females completed the trial. The intervention and control groups were made up of two schools each. The participants in the intervention and control groups received a total of 30 turkey berry-fortified biscuit supplementation or 30 placebos for a period of six weeks, respectively. The hemoglobin levels and cognitive test scores were obtained before and after the intervention. The number of anemic cases and low cognitive performance among the female adolescents in the intervention group reduced by 23.8% and 8.7%, respectively. There was a positive impact on the hemoglobin levels and cognitive performance of the intervention group. For every unit of turkey berry-fortified biscuit consumed by the intervention group, there was a 0.945 unit increase in hemoglobin level (p = 0.001) and a 2.796 unit increase in cognitive performance (p = 0.005). The turkey berry-fortified biscuit significantly reduced anemia prevalence and improved cognitive performance among the adolescent girls. Therefore, its potential in the management of anemia and improvement of cognition could be explored.

Comparative analysis of methyl-donor nutrient intakes and RCPM cognitive performance among school-aged children

BACKGROUND

Evidence shows a link between methyl-donor nutrient intakes and a child's cognitive ability. However, this is less known among Ghanaian children who might be at higher risk of methyl-donor nutrient deficiencies. This study showed comparative analysis of methyl-donor nutrient intakes and Raven's Coloured Progressive Matrices (RCPM) test performance among 2073 Ghanaian school children aged 9-13 years across four regions of Ghana.

METHODS

Data for the present study were obtained from the Child Nutrition, Fitness, and Cognition project; a cross-sectional survey conducted in four regions of Ghana. Dietary methyl-donor nutrient values were based on repeated 24 h recall data collected during the study periods. Cognitive tests were performed on the 2073 children using Raven's Coloured Progressive Matrices (RCPM) test.

RESULTS

We found dietary zinc (adjusted: β = 0.21, p = 0.003) and methionine (adjusted: β = 0.60, p = 0.044) intakes to be associated with RCPM scores in the linear regression model. School children living in Northern Region (adjusted OR = 0.6, p < 0.001, 95% CI = 0.4-0.7) and Volta Region (adjusted OR = 0.7, p = 0.006, 95% CI = 0.5-0.9) had lower odds of scoring above the 50th percentile on the RCPM test compared with those living in Greater Accra Region. Children who consumed below the RDA for dietary folate (unadjusted OR = 0.8, p = 0.055, 95% CI = 0.7-1.0) and zinc (unadjusted OR = 0.8, p = 0.049, 95%CI = 0.7-1.0) had lower odds of scoring above the 50th percentile on the RCPM test compared with those who consumed above the RDA for dietary folate and zinc respectively. Children who consumed below the EAR for dietary vitamin B₁₂ (unadjusted OR = 0.7, p = 0.004, 95% CI = 0.6-0.9) had reduced odds of scoring above the 50th percentile on the RCPM test compared with those who consumed above the EAR for dietary vitamin B₁₂.

CONCLUSIONS

Higher dietary methionine intake was strongly associated with higher RCPM scores. Regional differences, and children's dietary consumption below the EAR/RDA for dietary folate, vitamin B₁₂, and zinc were associated with poor RCPM test performance. School children's nutrient intake should be prioritized for improved cognition.

The Magnitude of Hidden Hunger and Cognitive Deficits among Children Living in Orphanages in Kumasi, Ghana

This study assessed the magnitude of hidden hunger (micronutrient deficiencies) and cognitive deficits of 130 school-aged children (6–13 years old) living in three selected orphanages in Kumasi, Ghana. Sociodemographic data assessment, anthropometric assessment (BMI for age and height for age), dietary assessment (3-day repeated 24-hour dietary recall), urinary iodine level assessment, and cognitive performance assessment (Raven’s Coloured Progressive Matrices) were performed. Boys formed 50.8% of the study population, while girls formed 49.2%. The median age of participants was 10.50 years. About 12.3%, 7%, and 10.0% of participants were stunted, thin, and overweight/obese, respectively. The prevalence of mild iodine deficiency (i.e., 50–99 μg/L) was 16.2%. Iodine deficiency was significantly higher (23.6%) in participants who had lived for at least 7 years in the orphanage compared to those who had lived less than 7 years (10.7%) ( $p=0.047$ ). About 17% of the participants performed poorly (<50%) on the cognition test. Mean cognition test scores were significantly different among the orphanages ( $p=0.027$ ). The majority of participants, 89.2%, 54.6%, 76.9%, and 77.7%, had adequate intake of iron, zinc, vitamin C, and folate, respectively, whereas intake of vitamins A and B12 was inadequate for the majority of participants (90.8% and 50.8%, respectively). There was no significant correlation between micronutrient intake and cognitive performance. However, mean cognition test scores were significantly different between participants with adequate and inadequate iron and vitamin A intake ( $p=0.007$ and $p<0.001$ , respectively). The findings of this study warrant a closer look at nutritional intakes in orphanages to improve hidden hunger and cognitive performance.

Decomposition of Socioeconomic Changes in the Consumption of Micronutrients in Pakistan between 2006 and 2016

This study is conducted to decompose inequality in four important micronutrient intakes, i.e. calcium, iodine, iron, and zinc due to socioeconomic factors during 2006-2016. For this purpose, data were taken from national-level surveys, i.e. HIES-2006 and HIICS-2016. We applied a recently proposed decomposition method based on copula function to decompose between year changes in the consumption of micronutrients into structure and composition effect. The results show that average calcium and iron intakes increased by 518.54 (mg) and 0.962 (mg), respectively, while average iodine and zinc intakes decreased by 2.009 (mg) and 3.411 (mg), respectively, during the decade. Estimates of structure effect show that calcium, iodine, and iron consumption increased on average, i.e. 525.316 (mg), 14.615 (mg), and 2.15 (mg), respectively, while zinc intake decreased by 2.735 (mg). The composition effect is negative for all the four micronutrients, implying that consumption of calcium, iodine, iron, and zinc decreased as 6.7766 (mg), 16.624 (mg), 1.189 (mg), and 0.677 (mg), respectively. The main factors of this change are household income, urbanization, provinces, and household size. The policymakers need to know the importance of socioeconomic factors to improve hidden hunger in terms of micronutrient intakes.

The relationship between nutrition and physical activity knowledge and body mass index-for-age of school-aged children in selected schools in Ghana

BACKGROUND

Nutrition knowledge contributes significantly to the nutritional status and habits of individuals as it influences their food consumption. And body mass index (BMI) of individuals. Recent data suggests a relationship between nutrition and physical activity knowledge, attitude, practices, and anthropometric indices of Ghanaian children.

OBJECTIVE

To determine the relationship between nutrition and physical activity knowledge and using BMI-for-age of school-aged children.

METHODS

A cross-sectional study involving 591 school-aged children (8-13 years) chosen at random from schools in Ghana's Ho Municipality. Socio-demographic information was gathered. Data on nutrition and physical activity knowledge, attitude, and practice were also collected using structured questionnaires. BMI was calculated after weight and height were measured.

RESULTS

Majority of the participants had poor knowledge on nutrition (46.6%) and physical activity (49.8%) even though more children in private schools (63.3%) had better (good and excellent) knowledge in nutrition than children from public schools (48.2%). Older children (11-13 years) had 'good' knowledge of physical activity (54.7%) as opposed to younger children. Males (59.5%) and children in private schools (66.3%) also had better overall scores in combined nutrition and physical activity knowledge than their female and public-school counterparts, respectively. Physical activity knowledge was significantly (p < 0.05) associated with the BMI-for-age categories. Nutrition knowledge (p < 0.05) and total nutrition and physical activity knowledge scores (p < 0.001) were weakly but positively associated with BMI-for-age.

CONCLUSION

The results suggest that BMI-for-age of the participants was positively correlated to the nutrition knowledge and the total nutrition and physical activity knowledge (NutPA).

Nutrition education improves knowledge and BMI-for-age in Ghanaian school-aged children

BACKGROUND

Adequate nutrition is required for growth and development in children. This study tested the effectiveness of nutrition education on knowledge and BMI-for-age (BFA) of school-aged children in the Kumasi Metropolis.

METHODS

Children, aged 9-13 years old were recruited from ten randomly selected primary schools in the Metropolis. The schools were randomly allocated into 3 groups: nutrition education (3 schools), physical activity (PA) education (3 schools), both interventions (2 schools), or control (2 schools). Following a baseline nutrition and PA knowledge and status assessment in 433 children, twice-monthly nutrition and PA education and demonstrations were carried out for 6 months, followed by a post-intervention assessment.

RESULTS

PA and nutrition knowledge improved in all groups (P<0.001); the highest improvement was among those who received both interventions (31.0%), followed by the nutrition education group (29.8%), and the least, the control group (19.1%). Overall, BFA improved by +0.36, from baseline (-0.26) to end of the intervention (+0.10, P<0.001). Within the groups, the nutrition group (+0.65, P<.001) had the highest improvement, then, both the intervention group (+0.27, P<0.001), the PA group (+0.23, P<0.001) and lastly, the control group (+0.18, P=0.001).

CONCLUSION

Nutrition education could improve knowledge and BMI-for-age in school-aged children in Ghana.

Iron status predicts cognitive test performance of primary school children from Kumasi, Ghana

Background

Good nutritional status of school-aged children is crucial in achieving improved cognition. The objective of this study was to assess the relationship between nutritional status and cognition of school-aged children in the Kumasi metropolis, Ghana.

Methods

389 children were selected from ten government-owned schools. Socio-demographic and anthropometric data were collected. Blood samples were collected and analyzed for nutrients levels. Dietary intakes were assessed using food frequency questionnaire and previous day’s nutrients intake. Cognition test was performed using the Ravens Colored Progressive Matrix (RCPM).

Results

Mean age of participants was 8.9±1.4 years, mean RCPM score was 17.9±5.4. More girls scored RCPM below the 40^th percentile (45.5%) than boys (33.7%), while mother’s level of education significantly associated with RCPM percentiles of the children (p = 0.037). Four dietary patterns were generated from food frequency data, and scores of the second pattern, depicting vegetables, non-fruits, bread and cereals, showed a weak negative correlation (r = -0.132, p = 0.026) with previous day’s dietary zinc intake. Cognitive status did not vary by anthropometric and dietary patterns. More anemic (54.4%) than non-anemic (33.3%) children were below the 40^th RCPM percentile. Mean previous day’s intake for folate (p<0.001), vitamin B₆ (p = 0.018), iron (p<0.001), and zinc (p = 0.001) differed significantly between the cognitive test score percentiles of the children. Spearman rank correlation showed weak positive associations between RCPM score and hemoglobin (r = 0.246, p = 0.003) and serum ferritin (r = 0.176, p = 0.036). Binary regression analysis showed anemic children (aOR = 0.4; 95%CI = 0.2–0.8, p = 0.014), compared with non-anemic had decreased odds, while boys, compared with girls had increased odds (aOR = 2.0 95%CI = 1.0–4.0, p = 0.035) for scoring above the 50^th RCPM percentile.

Conclusions

Iron status, especially hemoglobin levels, correlated with the cognitive performance of school-aged children in the metropolis. Thus nutritional strategies aimed at reducing iron deficiency anemia are needed.

Physical fitness and cognitive function among school-aged children in selected basic schools in the Ho Municipality of Ghana

Physical fitness is thought to promote cognitive function. Evidence about this is however lacking in the Ghanaian context. This study aimed to investigate the association between physical fitness and cognitive function among basic school children aged 8–13 years. A cross-sectional study involving 591 school children, recruited from 12 randomly selected public and private basic schools was conducted. Physical fitness tests were done using a five-test battery (Fifty metre run, handgrip strength, sit-up, flexibility and standing board jump) following standardized procedures. Cognitive function test using the Raven's Coloured Progressive Matrices (RCPM) were carried out. More girls (55%), children from 8-13 years old (49.1%) and public school children (66.1%) participated in the study. For fitness, boys performed better than girls in sit ups 3.4 ± 2.2 (mean ± SD), p = 0.012, handgrip 4.3 ± 2.0, p = 0.001 and overall fitness 4.3 ± 2.0, p = 0.007. Children in public schools performed significantly better in forward jump (p < 0.001) while those in private schools did better in 50m run (p < 0.001). For cognition, 46.1% of participants had less than 50% of the total score. Cognitive test score varied for forward jump and handgrip alone and not for sit ups, 50m run and overall score. Mean forward jump score was lowest in poor cognition group (4.9 ± 2.3), followed by good (5.3 ± 2.2) and highest among excellent (5.5 ± 2.3, p = 0.044) cognition group. Similar observation was made for handgrip. Cognition score and hand grip strength were positively but weakly correlated. (r = 0.132, p = 0.026). Although handgrip strength (measuring muscular strength) was significantly associated with cognitive function, this study found no significant association between overall physical fitness and cognitive function. These results indicate that only some components of physical fitness may be associated with cognitive function. This study is however correlational and one cannot infer causality.