Associations of diet quality with dairy group membership, membership duration and non-membership for Kenyan farm women and children: a comparative study.

OBJECTIVE: To examine associations among diet quality and dairy group membership, membership duration and non-member status for women and school-aged children in rural Kenya. DESIGN: A cross-sectional survey, using chain referral sampling, was conducted and diet quality indices and prevalence of inadequate intake (PII) were estimated using the 'estimated average requirement' cut-off point method from single 24 h recalls, using a Kenyan nutrient database. PII was compared among members and non-members and among membership-duration groups. SUBJECTS: Women and children of dairy group members (n 88), across membership-duration groups (1-3, 4-6, 7-9 and 10+ years), and non-members (n 23) living among members. SETTING: Small farms in central Kenya. RESULTS: Members had higher energy, percentage of energy from animal-source foods and dietary diversity. Member women and children had lower PII for respectively seven and three of eleven micronutrients. Reduced PII for milk-source micronutrients was associated with membership duration for women. Many member women (38%) had inadequate vitamin A intake and 39% of member children had inadequate Zn intake. Members' PII was also high (>45%) for Fe, Ca and vitamin B12. A higher prevalence of being overweight among member women compared with non-member women suggested nutrition transition effects of higher farm productivity. CONCLUSIONS: Dairy group membership was positively associated with adequate quantity and quality of diets for women and children. Long-term membership was insufficient to address micronutrient deficiencies. Understanding and addressing barriers to better diet quality and strategies to mitigate negative nutrition transition effects are needed to optimize nutritional outcomes of dairy group membership.

Cooking decreases observed perfluorinated compound concentrations in fish.

Dietary intake is a major route of exposure to perfluorinated compounds (PFCs). Although fish and seafood contribute significantly to total dietary exposure to these compounds, there is uncertainty with respect to the effect of cooking on PFC concentrations in these foods. Eighteen fish species purchased from markets in Toronto, Mississauga, and Ottawa, Canada were analyzed for perfluorooctanesulfonamide (PFOSAs)-based fluorochemicals and perfluorinated acids (PFAs) in raw and cooked (baked, boiled, fried) samples. Of 17 analytes, perfluorooctanesulfonic acid (PFOS) was detected most frequently; concentrations ranged from 0.21 to 1.68 ng/g ww in raw and cooked samples. PFOSAs were detected only in scallops at concentrations ranging from 0.20 ng/g ww to 0.76 ng/g ww. Total concentrations of PFAs in samples were 0.21 to 9.20 ng/g ww, respectively, consistent with previous studies. All cooking methods reduced PFA concentrations. Baking appeared to be the most effective cooking method; after baking samples for 15 min at 163 C (325 degrees F), PFAs were not detected in any of the samples. The margin of exposures (MOE) between the toxicological points of reference and the dietary intake of perfluorocarboxylates (PFCAs) and PFOS in fish and seafood muscle tissue were greater than 4 orders of magnitude. This indicates that reducing consumption of fish muscle tissue is not warranted on the basis of PFC exposure concerns at the reported levels of contamination, even for high fish consuming populations.

Food and nutritional security of children of urban farmers in Kampala, Uganda.

BACKGROUND: Urban agriculture is an important livelihood strategy to increase access to and availability of food in urban settings. OBJECTIVE: We examined the impact of sociodemographic and farming variables on the household food security and nutritional security of an index child aged 2 to 5 years. Our hypothesis was that dietary quality (percentage of energy from animal-source foods [%ASF] and dietary diversity) would have an impact on infection (as measured by C-reactive protein [CRP]), which in turn would have an impact on biochemical indices (hemoglobin and retinol) and anthropometric indices (weight-for-age z-score [WAZ] and body mass index z-score [ZBMI]). We examined the relationships among urban agricultural activities, household food security, and child nutritional security. METHODS: We conducted a cross-sectional survey of 296 households within each randomly selected study zone in Kampala, Uganda. Correlations were calculated and bivariate and exploratory path analysis was conducted to explore relationships. RESULTS: Household food security score was significantly positively correlated with the number of tropical livestock units (r = 0.142, p = .017), dietary diversity (r = 0.230, p < .001), %ASF (r = 0.185, p = .002), and WAZ (r = 0.149, p = .017). Exploratory path analysis demonstrated a significant positive relationship between household food security and %ASF, which in turn was positively associated with retinol. Consumption of animal-source food was significantly negatively associated with C-reactive protein level, which in turn was significantly negatively associated with hemoglobin level, and hemoglobin was significantly positively associated with WAZ. CONCLUSIONS: Our findings are supportive of efforts to enhance access to land for urban farming and engagement in activities aimed at improving the quality of dietary intake of urban residents, in particular by increasing consumption of animal-source foods.

Growing urban health: community gardening in South-East Toronto.

This article describes results from an investigation of the health impacts of community gardening, using Toronto, Ontario as a case study. According to community members and local service organizations, these gardens have a number of positive health benefits. However, few studies have explicitly focused on the health impacts of community gardens, and many of those did not ask community gardeners directly about their experiences in community gardening. This article sets out to fill this gap by describing the results of a community-based research project that collected data on the perceived health impacts of community gardening through participant observation, focus groups and in-depth interviews. Results suggest that community gardens were perceived by gardeners to provide numerous health benefits, including improved access to food, improved nutrition, increased physical activity and improved mental health. Community gardens were also seen to promote social health and community cohesion. These benefits were set against a backdrop of insecure land tenure and access, bureaucratic resistance, concerns about soil contamination and a lack of awareness and understanding by community members and decision-makers. Results also highlight the need for ongoing resources to support gardens in these many roles.

Efficacy of a community-based dietary intervention to enhance micronutrient adequacy of high-phytate maize-based diets of rural Malawian children.

OBJECTIVE: To evaluate the efficacy of a community-based dietary intervention to reduce risk of micronutrient inadequacies in high-phytate maize-based Malawian diets. DESIGN: Quasi-experimental post-test design with a non-equivalent control group. SETTING: Four villages in Mangochi District, Southern Malawi. PARTICIPANTS: Households with children aged 3-7 years in two intervention (n = 200) and two control (n = 81) villages participated in a 6-month intervention employing dietary diversification, changes in food selection patterns, and modifications to food processing to reduce the phytate content of maize-based diets. Baseline comparability between the groups was confirmed via assessment of sociodemographic characteristics, anthropometry, knowledge and practices, morbidity, haemoglobin and hair zinc. After 12 months, knowledge and practices and dietary intakes were assessed by interactive 24-hour recalls, one during the food plenty and a second during the food shortage season. Nutrient adequacy for the two groups was compared via dietary quality indicators and predicted prevalence of inadequate intakes using the probability approach. RESULTS: Intervention children had diets that were significantly more diverse and of a higher quality than those of controls. Median daily intakes of protein, calcium, zinc (total and available), haem iron, vitamin B12 and animal foods (grams; % of total energy) were higher (P < 0.05) whereas phytate intakes, phytate/zinc and phytate/iron molar ratios were lower (P < 0.01) in the intervention group; some spread of knowledge and practices to controls occurred. CONCLUSIONS: Our community-based dietary strategies reduced the predicted prevalence of inadequate intakes of protein, calcium, zinc and vitamin B12, but not iron, in children from Malawian households with very limited resources.

Monitoring of weight in weight loss programs: a double-edged sword?

Body size feedback is commonly provided to clients in weight loss programs. The attention focused on one's current, and presumably undesirable, body size can be motivating for those who want to modify a pattern of unhealthful behaviors. For others, this feedback may result in psychological distress and could lead to outcomes that are, in fact, counter to a weight loss strategy, such as attrition from programs, misreporting of dietary intake, and emotional states associated with binge eating. Dietitians and weight loss professionals should provide weight feedback judiciously, especially to vulnerable clients, and perhaps soften the emphasis on body size altogether.

Experiences of a community-based dietary intervention to enhance micronutrient adequacy of diets low in animal source foods and high in phytate: a case study in rural Malawian children.

A community-based dietary diversification/modification intervention, employing a quasiexperimental design with a nonequivalent control group, was conducted in two intervention and two control villages in rural Southern Malawi. The aim was to enhance the content and bioavailability of micronutrients in maize-based diets of stunted children ages 30-90 mo. Efficacy was evaluated through a comparison of the changes in knowledge and practices, anthropometry, malaria screening, hemoglobin and hair zinc after 12 mo, common infections monthly postintervention and nutrient adequacy postintervention via 24-h recalls. Intervention diets were more diverse and of higher quality than the control diets, supplying significantly more animal source foods, especially soft-boned fish, but less phytic acid (p < 0.01). Median intakes of energy, protein, calcium, available zinc, heme iron and vitamin B-12 were greater (p < 0.05) in intervention compared to the control groups; some spread of knowledge and practices to the control groups occurred. Intervention enhanced Z-scores for mid-upper-arm circumference and arm muscle area (p < 0.001), but had no impact on weight or height gain. After controlling for baseline variables, mean hemoglobin was higher (107 vs. 102 g/L; p < 0.01) postintervention, whereas incidence of anemia and common infections were lower in the intervention groups compared to the control groups, with no change in malaria or hair zinc status. Dietary strategies reduced the prevalence of inadequate intakes of protein, calcium, zinc and vitamin B-12, but not iron, because fish was the major source of animal food consumed. More efforts to raise small animals and promote their consumption are needed to enhance dietary quality and ensure optimal growth, health and cognitive development in young Malawian children.