Nutrition literacy status and preferred nutrition communication channels among adults in the Lower Mississippi Delta.

INTRODUCTION: The objective of this cross-sectional study was to examine the nutrition literacy status of adults in the Lower Mississippi Delta. METHODS: Survey instruments included the Newest Vital Sign and an adapted version of the Health Information National Trends Survey. A proportional quota sampling plan was used to represent educational achievement of residents in the Delta region. Participants included 177 adults, primarily African Americans (81%). Descriptive statistics, chi2 analysis, analysis of variance, and multivariate analysis of covariance tests were used to examine survey data. RESULTS: Results indicated that 24% of participants had a high likelihood of limited nutrition literacy, 28% had a possibility of limited nutrition literacy, and 48% had adequate nutrition literacy. Controlling for income and education level, the multivariate analysis of covariance models revealed that nutrition literacy was significantly associated with media use for general purposes (F = 2.79, P = .005), media use for nutrition information (F = 2.30, P = .04), and level of trust from nutrition sources (F = 2.29, P = .005). Overall, the Internet was the least trusted and least used source for nutrition information. Only 12% of participants correctly identified the 2005 MyPyramid graphic, and the majority (78%) rated their dietary knowledge as poor or fair. CONCLUSION: Compared with other national surveys, rates of limited health literacy among Delta adults were high. Nutrition literacy status has implications for how people seek nutrition information and how much they trust it. Understanding the causes and consequences of limited nutrition literacy may be a step toward reducing the burden of nutrition-related chronic diseases among disadvantaged rural communities.

Prevalence estimates of overweight in Head Start preschoolers.

This study estimates prevalence of overweight and at risk of overweight among low-income predominately non-Hispanic Black Head Start Mississippi preschoolers. A two-stage stratified probability design produced a representative sample of 1,250 preschoolers aged 3 to 5 years. Height, weight, age, gender, and race data were obtained. The prevalence of overweight (20.6%) and at risk of overweight (17.9%) combined was 38.5%. Moreover, highest rates were found in boys, non-Hispanic Blacks, and 5-year-olds. The prevalence of overweight in Mississippi Head Start children exceeds national averages, reinforcing the need for early-childhood health promotion and prevention.

Prevalence of obesity and overweight among children and youth in Mississippi: current trends in weight status.

The purpose of this research was to estimate the 2007 prevalence of obesity and overweight among children and youth and to compare these data with previous prevalence data to determine current trends in weight status in Mississippi. Measured height and weight data were collected on a weighted sample of 3,837 public school students in grades K-12. Prevalence estimates of obesity and overweight, as indicated by Body Mass Index, were calculated. Analyses were made by gender, race, and grade level for 2007 data, and these data were compared to the 2005 findings. In 2007, 23.5% of the students were obese. The prevalence was highest among elementary school students, males and nonwhite students. The prevalence of obesity in 2007 was lower than in 2005, and the decline occurred primarily among middle and high school students. While the 2007 prevalence was still high, the decline suggests that recent obesity initiatives may be having a positive impact.

The relationship of dietary and lifestyle factors to bone mineral indexes in children.

OBJECTIVE: To identify factors related to children's bone mineral indexes at age 8 years, and to assess bone mineral indexes in the same children at ages 6 and 8 years. DESIGN: Bone mineral content (BMC [g]) and bone mineral density (BMD; calculated as g/cm 2 ) were measured by dual-energy x-ray absorptiometry (DEXA) in children and their mothers when the children were 8 years of age. A subset of children had an earlier DEXA assessment at age 6 years. Children's dietary intake, height, weight, and level of sedentary activity were assessed as part of a longitudinal study from ages 2 months to 8 years. SUBJECTS/SETTING: Fifty-two healthy white children (25 male, 27 female) and their mothers. Main outcome measures Children's total BMC and BMD at age 8 years. STATISTICAL ANALYSES PERFORMED: Correlations and stepwise multiple regression analyses. RESULTS: Factors positively related to children's BMC at age 8 years included longitudinal intakes (ages 2 to 8 years) of protein, phosphorus, vitamin K, magnesium, zinc, energy, and iron; height; weight; and age ( P < or = .05). Factors positively related to children's BMD at age 8 years included longitudinal intakes of protein and magnesium ( P < or = .05). Female sex was negatively associated with BMC and BMD at age 8 years ( P < or = .05). Children's bone mineral indexes at ages 6 and 8 years were strongly correlated ( r =0.86, P < .0001 for BMC; r =0.92, P <.0001 for BMD). CONCLUSIONS: Because many nutrients are related to bone health, children should consume a varied and nutrient-dense diet.

Longitudinal calcium intake is negatively related to children's body fat indexes.

OBJECTIVE: To determine if dietary calcium was negatively related to children's body fat (BF), if BF indexes and calcium intakes changed over time, and to identify variables related to BF and calcium intake. DESIGN: Percent BF and kg BF were assessed by dual energy x-ray absorptiometry (DEXA) in 8-year-old children. In a prospective design, height, weight, dietary intakes, and related variables were monitored longitudinally from ages 2 months to 8 years during in-home interviews. SUBJECTS: Fifty-two white children, (n=25 boys, 27 girls) participated in a longitudinal study with their mothers. At 8 years of age, mean BMI was 17.3+/-2.1 (standard deviation) for boys and 17.1+/-2.5 for girls. ANALYSES: Regression analysis of all variables, followed by further regression analysis on selected models. RESULTS: At 8 years, percent BF was 22.7+/-6.7 for boys and 26.2+/-7.9 for girls, as assessed by DEXA. Dietary calcium (mg) and polyunsaturated fat intake (g) were negatively related to percent BF (P=.02 to.04) in 3 statistical models, which predicted 28% to 34% of the variability in BF among children. Variables positively associated with percent BF were total dietary fat (g) or saturated fat (g), female gender, sedentary activity (hours/day), father's BMI, and mothers' percent BF. Calcium intakes were significantly correlated over time. Dietary variety was positively related to calcium intake, and intakes of carbonated beverages and other sweetened beverages were negatively related. APPLICATIONS/CONCLUSIONS: Children should be strongly encouraged to regularly include calcium-rich foods and beverages in their diets.

Do food-related experiences in the first 2 years of life predict dietary variety in school-aged children?

OBJECTIVE: To determine if food-related experiences in the first 2 years of life predict dietary variety in school-aged children. DESIGN/SETTING: Child/mother pairs were interviewed 7 or 8 times when children were 2 to 24 months using a randomized incomplete block design to schedule interviews. Each child/mother pair was interviewed when the child was ages 6, 7, and 8 years. PARTICIPANTS: Child/mother pairs (n = 70) were continuous participants in the longitudinal study. MAIN OUTCOME MEASURES: Dependent variables were children's vegetable and fruit dietary variety, assessed from 3 days of dietary data at ages 6, 7, and 8 years. Independent variables from the first 2 years of life were selected from the longitudinal data set. ANALYSES: General linear models. Adjustments for age that vegetables (or fruits) were introduced in the diet. RESULTS: Vegetable variety in the school-aged child was predicted by mother's vegetable preferences, R2 =.084. Fruit variety in the school-aged child was predicted by breast-feeding duration and either early fruit variety (R2 =.254) or fruit exposure (R2 =.246). CONCLUSIONS/IMPLICATIONS: Nutrition education messages for mothers should emphasize the importance of early food-related experiences to school-aged children's acceptance of a variety of vegetables and fruits.

Meaningful messages: adults in the Lower Mississippi Delta provide cultural insight into strategies for promoting the MyPyramid.

OBJECTIVE: To explore cultural perceptions of the MyPyramid key messages and identify factors that may impact adoption of these recommendations. METHODS: Systematic content analysis of transcripts from in-depth, structured interviews with 23 adults, primarily African American females, residing in the Lower Mississippi Delta. RESULTS: When asked to identify good reasons to follow the MyPyramid key messages, nonspecific references to improved health were most prevalent (n = 130); however, participants also acknowledged the importance of getting vitamins and nutrients (n = 81), and the impact food choices have on health conditions (n = 77) and organ systems (n = 65). Individual-level factors (n = 211), such as dislike for food items and tradition or customs, far outnumbered environmental-level factors (n = 48), such as cost and availability, as perceived reasons preventing community members from adhering to the key messages. The most frequently mentioned suggestion for helping community members eat according to the MyPyramid were to raise awareness (n = 93), provide information (n = 65), and improve the taste of or provide opportunity to taste (n = 49). CONCLUSIONS AND IMPLICATIONS: This study captured participants' cultural perspectives of the MyPyramid key messages. Results indicate that both social marketing campaigns and intervention efforts focused on individual-level factors are needed to promote the MyPyramid in this disadvantaged Delta region.