Sufficient maternal dietary intake of n-3 fatty acids (FA) supports offspring development. We aimed to construct simple criteria for dietary counselling to improve intake of n-3 FA.

Serum phospholipid FA from mothers and infants were analysed by GC one month after delivery. Dietary intake of foods during pregnancy and one month after delivery were recorded using 3 d food diaries and an index for healthy eating was calculated. Fish consumption was established by questionnaires. Dietary consumption of foods resulting in an increase in serum n-3 FA was defined.

A mother–child follow-up study in Southwest Finland.

Mothers (n 90) and 1-month-old infants (n 63).

After delivery, the mother’s consumption of fish at least three times per week resulted in an increase in total serum n-3 FA (mean difference (95 % CI): 1·7 (0·7, 2·8) % of total FA, P<0·001) and DHA (1·1 (0·5, 1·8) % of total FA, P<0·001) compared with non-consumers. Persistent fish intake once weekly throughout pregnancy increased total serum n-3 FA (P=0·001) and DHA (P<0·001). Overall, a healthy diet (middle and highest tertiles of healthy eating index score v. the lowest tertile) resulted in higher total serum n-3 FA (P=0·004) and DHA (P=0·008). Mother’s diet along with higher serum levels of n-3 FA were related to serum FA levels in 1-month-old infants.

An overall healthy diet and persistent consumption of fish at least once weekly throughout pregnancy or more frequent fish intake three times per week increases n-3 FA in serum phospholipids of both mothers and their infants.

To study the association between density of stores (food and beverage stores, stores selling only fruits and vegetables, and supermarkets) and the BMI of adults aged ≥20 years in Mexico.

A cross-sectional study was performed. Individual data came from the 2012 National Health and Nutrition Survey, while information on stores was taken from the National Institute of Geography and Statistics’ National Statistics Directory of Economic Units. A weighted least-squares model was estimated to test the association between density of stores and BMI of adults adjusting for sex, age, education, presence of hypertension, diabetes or both, household assets index and marginality index at the municipality level.

Mexico.

An additional 1 sd in the density of fruit and vegetable stores was associated with a reduction of 0·24 (95 % CI −0·37, −0·12) kg/m2 in BMI when the densities of the other stores were at their mean values. For food and beverage store density, a difference of 1 sd was associated with an increase of 0·50 (95 % CI 0·33, 0·67) kg/m2 in BMI, while for supermarkets the corresponding association was a reduction of 0·48 (95 % CI −1·52, 0·56) kg/m2 in BMI.

In places with a higher density of stores that offer unhealthy foods, the BMI of adults tends to be higher.

The objective of the present study was to determine if vitamin D intake and status are associated with pre-eclampsia in a country without a vitamin D fortification policy.

A case–control study of pregnancies with (case) and without (control) pre-eclampsia was conducted from January to April when UVB is minimal. Maternal and cord blood obtained at delivery were measured for plasma 25-hydroxycholecalciferol (25-OH-D3), 3-epimer of 25-OH-D3 (3-epi-25-OH-D3) and 24,25-dihydroxycholecalciferol (24,25-(OH)2D3) by LC–MS/MS and maternal 1,25-dihydroxyvitamin D (1,25-(OH)2D). Differences between groups were tested with ANOVA and Bonferroni post hoc tests (P<0·05).

Clinical Center of Serbia.

Pregnant women with and without pre-eclampsia (n 60) and their infants.

Exogenous vitamin D intake (0·95–16·25 µg/d (38–650 IU/d)) was not significantly different between groups. Women with pre-eclampsia delivered infants at an earlier gestational age and had significantly lower mean total plasma 25-hydroxyvitamin D (25-OH-D; case: 11·2 (sd 5·1); control: 16·1 (sd 5·7) ng/ml; P=0·0006), 25-OH-D3 (case: 10·0 (sd 4·9); control: 14·2 (sd 5·8) ng/ml; P=0·002), 3-epi-25-OH-D3 (case: 0·5 (sd 0·2); control: 0·7 (sd 0·2) ng/ml; P=0·0007) and 1,25-(OH)2D (case: 56·5 (sd 26·6); control: 81·0 (sd 25·7) pg/ml; P=0·018), while 24,25-(OH)2D3 was not different between groups. Infants did not differ in total plasma 25-OH-D, 25-OH-D3, 3-epi-25-OH-D3 and 24,25-(OH)2D3, but the mean proportion of 3-epi-25-OH-D3 was higher in the infant case group (case: 7·9 (sd 1·1); control: 7·0 (sd 1·4) % of total 25-OH-D3; P=0·005).

A high prevalence of vitamin D deficiency, as defined by plasma 25-OH-D<12 ng/ml, was observed in 47 % of all mothers and 77 % of all infants. These data underscore the need for prenatal vitamin D supplementation and a food fortification policy in Serbia.

To gain a deeper understanding of the retail food environment by investigating similarities and differences between objective measures and residents’ perspectives.

The study incorporated Geographic Information System (GIS)-based measures, in-store surveys and the results from a larger photovoice project. We combined these data using a convergent parallel mixed-methods approach.

We conducted this study in a low-income neighbourhood in Madrid (Spain) in 2016.

We assessed healthy food availability, accessibility and affordability using GIS-based measures and in-store audits. We also analysed the photographs and discussions from twelve participants who engaged in a photovoice project on their food environment.

Quantitative results depicted a widely served and highly accessible retail food environment, in which supermarkets scored highest in terms of healthy food availability (36·5 out of 39) and 98·9 % of residents could access a healthy food store within a walking travel distance of less than 15 min. Qualitative results showed that participants preferred small local businesses over supermarkets, and revealed built environment obstacles for elderly residents. They also highlighted how the socio-economic context constrained residents’ food choices.

People’s experienced retail food environment is different from the one quantitatively analysed. Results show the potential of using a mixed-methods approach to enrich food environment research and enhance public health interventions.

A community-based participatory nutrition promotion (CPNP) programme, involving a 2-week group nutrition session, attempted to improve child feeding and hygiene. The implementation, utilization and influence of the CPNP programme were examined by programme impact pathway (PIP) analysis.

Five CPNP programme components were evaluated: (i) degree of implementation; (ii) participants’ perception of the nutrition sessions; (iii) participants’ message recall; (iv) utilization of feeding and hygiene practices at early programme stage; and (v) participants’ engagement in other programmes.

Habro and Melka Bello districts, Ethiopia.

Records of 372 nutrition sessions, as part of a cluster-randomized trial, among mothers (n 876 in intervention area, n 914 in control area) from a household survey and CPNP participants (n 197) from a recall survey.

Overall, most activities related to nutrition sessions were successfully operated with high fidelity (>90 %), but a few elements of the protocol were only moderately achieved. The recall survey among participants showed a positive perception of the sessions (~90 %) and a moderate level of message recall (~65 %). The household survey found that the CPNP participants had higher minimum dietary diversity at the early stage (34·0 v. 19·9 %, P=0·01) and a higher involvement in the Essential Nutrition Action (ENA) programme over a year of follow-up (28·2 v. 18·3 %; P<0·0001) compared with non-participants within the intervention area.

Our PIP analysis suggests that CPNP was feasibly implemented, promoted a sustained utilization of proper feeding behaviours, and enhanced participation in the existing ENA programme. These findings provide a possible explanation to understanding CPNP’s effectiveness.

To conduct a pilot study to assess the feasibility of modifying food truck meals to meet the My Plate guidelines as well as the acceptability of healthier meals among consumers.

We recruited the owners of Latino food trucks (loncheras) in 2013–2014 and offered an incentive for participation, assistance with marketing and training by a bilingual dietitian. We surveyed customers and we audited purchases to estimate sales of the modified meals.

City of Los Angeles, CA, USA.

Owners or operators of Latino food trucks (loncheras) and their customers.

We enrolled twenty-two lonchera owners and eleven completed the intervention, offering more than fifty new menu items meeting meal guidelines. Sales of the meals comprised 2 % of audited orders. Customers rated the meals highly; 97 % said they would recommend and buy them again and 75 % of participants who completed the intervention intended to continue offering the healthier meals. However, adherence to guidelines drifted after several months of operation and participant burden was cited as a reason for dropout among three of eleven lonchera owners who dropped out.

Lonchera owners/operators who participated reported minimal difficulty in modifying menu items. Given the difficulty in enrolment, expanding this programme and ensuring adherence would likely need to be accomplished through regulatory requirements, monitoring and feedback, similar to the methods used to achieve compliance with sanitary standards. A companion marketing campaign would be helpful to increase consumer demand.

The association between farm production diversity and dietary diversity in rural smallholder households was recently analysed. Most existing studies build on household-level dietary diversity indicators calculated from 7d food consumption recalls. Herein, this association is revisited with individual-level 24 h recall data. The robustness of the results is tested by comparing household- and individual-level estimates. The role of other factors that may influence dietary diversity, such as market access and agricultural technology, is also analysed.

A survey of smallholder farm households was carried out in Malawi in 2014. Dietary diversity scores are calculated from 24 h recall data. Production diversity scores are calculated from farm production data covering a period of 12 months. Individual- and household-level regression models are developed and estimated.

Data were collected in sixteen districts of central and southern Malawi.

Smallholder farm households (n 408), young children (n 519) and mothers (n 408).

Farm production diversity is positively associated with dietary diversity. However, the estimated effects are small. Access to markets for buying food and selling farm produce and use of chemical fertilizers are shown to be more important for dietary diversity than diverse farm production. Results with household- and individual-level dietary data are very similar.

Further increasing production diversity may not be the most effective strategy to improve diets in smallholder farm households. Improving access to markets, productivity-enhancing inputs and technologies seems to be more promising.

To examine where residents in an area with limited access to healthy foods (an urban food desert) purchased healthier and less healthy foods.

Food shopping receipts were collected over a one-week period in 2013. These were analysed to describe where residents shopped for food and what types of food they bought.

Two low-income, predominantly African-American neighbourhoods with limited access to healthy foods in Pittsburgh, PA, USA.

Two hundred and ninety-three households in which the primary food shoppers were predominantly female (77·8 %) and non-Hispanic black (91·1 %) adults.

Full-service supermarkets were by far the most common food retail outlet from which food receipts were returned and accounted for a much larger proportion (57·4 %) of food and beverage expenditures, both healthy and unhealthy, than other food retail outlets. Although patronized less frequently, convenience stores were notable purveyors of unhealthy foods.

Findings highlight the need to implement policies that can help to decrease unhealthy food purchases in full-service supermarkets and convenience stores and increase healthy food purchases in convenience stores.

To examine a library-based approach to addressing food insecurity through a child and adult summer meal programme. The study examines: (i) risk of household food insecurity among participants; (ii) perspectives on the library meal programme; and (iii) barriers to utilizing other community food resources.

Quantitative surveys with adult participants and qualitative semi-structured interviews with a sub-sample of adult participants.

Ten libraries using public and private funding to serve meals to children and adults for six to eight weeks in low-income Silicon Valley communities (California, USA) during summer 2015.

Adult survey participants (≥18 years) were recruited to obtain maximum capture, while a sub-sample of interview participants was recruited through maximum variation purposeful sampling.

Survey participants (n 161) were largely Latino (71 %) and Asian (23 %). Forty-one per cent of participants screened positive for risk of food insecurity in the past 12 months. A sub-sample of programme participants engaged in qualitative interviews (n 67). Interviewees reported appreciating the library’s child enrichment programmes, resources, and open and welcoming atmosphere. Provision of adult meals was described as building community among library patrons, neighbours and staff. Participants emphasized lack of awareness, misinformation about programmes, structural barriers (i.e. transportation), immigration fears and stigma as barriers to utilizing community food resources.

Food insecurity remains high in our study population. Public libraries are ideal locations for community-based meal programmes due to their welcoming and stigma-free environment. Libraries are well positioned to link individuals to other social services given their reputation as trusted community organizations.

Education is a crucial social determinant of health. Food insecurity can be detrimental to children’s academic achievement, potentially perpetuating a cycle of poverty and food insecurity. We aimed to assess the relationship between food insecurity and academic achievement in Canadian school-aged children.

Cross-sectional study of children and parents. Parents completed the short-form Household Food Security Survey Module and questions about income and education level (socio-economic status). Children completed FFQ. Data were prospectively linked to children’s performance on standardized exams written one year later. Mixed-effect logistic regression was employed to assess the relationship between food insecurity and likelihood of meeting academic expectations adjusting for socio-economic status, diet quality and potential confounders.

Nova Scotia, Canada in 2011–2012.

Students (n 4105) in grade 5 (10–11 years; 2167 girls) and their parents.

Low food security was reported by 9·8 % of households; very low food security by 7·1 % of households. Students from low-income households and reporting poor diet quality were less likely to do well in school. Children who lived in households reporting very low food security had 0·65 times the odds (OR=0·65; 95 % CI 0·44, 0·96) of meeting expectations for reading and 0·62 times the odds (OR=0·62; 95 % CI 0·45, 0·86) of meeting expectations for mathematics.

Very low household insecurity is associated with poor academic achievement among children in Nova Scotia.

The present cross-sectional study aimed to determine population-attributable risk (PAR) estimates for factors associated with inappropriate complementary feeding practices in The Gambia.

The study examined the first and most recent Demographic and Health Survey of The Gambia (GDHS 2013). The four complementary feeding indicators recommended by the WHO were examined against a set of individual-, household- and community-level factors, using multilevel logistic analysis. PAR estimates were obtained for each factor associated with inappropriate complementary feeding practices in the final multivariate logistic regression model.

The Gambia.

Last-born children (n 2362) aged 6–23 months.

Inadequate meal frequency was attributed to 20 % (95 % CI 15·5 %, 24·2 %) of children belonging to the youngest age group (6–11 months) and 9 % (95 % CI 3·2 %, 12·5 %) of children whose mothers were aged less than 20 years at the time of their birth. Inadequate dietary diversity was attributed to 26 % (95 % CI 1·9 %, 37·8 %) of children who were born at home and 20 % (95 % CI 8·3, 29·5 %) of children whose mothers had no access to the radio. Inadequate introduction of solid, semi-solid or soft foods was attributed to 30 % (95 % CI 7·2 %, 38·9 %) of children from poor households.

Findings of the study suggest the need for community-based public health nutrition interventions to improve the nutritional status of Gambian children, which should focus on sociocultural and economic factors that negatively impact on complementary feeding practices early in infancy (6–11 months).

To examine whether breast-feeding duration and socio-economic status (SES) interact to predict junk food consumption among offspring and whether the interaction differs across racial/ethnic groups.

Survey research using a longitudinal panel design. Hierarchical linear regression was used to analyse the data.

In-home interviews with the child’s parents over a 5-year period across the USA.

Approximately 10 000 American children from the Early Childhood Longitudinal Study: Birth Cohort (ECLS-B).

The findings revealed that longer breast-feeding durations correspond to lower levels of junk food consumption, but that this relationship emerges consistently only among low-SES blacks.

Efforts to promote breast-feeding among low-SES black women may have the added benefit of reducing their children’s junk food intake, and may thereby promote their general health and well-being. Future research should seek to explore the mechanisms by which breast-feeding might benefit the dietary habits of low-SES black children.

Childhood cancer survivors (CCS) have been shown to practise suboptimal dietary intake and may benefit from nutrition interventions during and after treatment. Cooking classes have become popular for encouraging healthy eating behaviours in community-based programming and academic research; however, literature on teaching cooking classes in CCS is limited. The purpose of the present study was to address the development and implementation of classes for CCS based on a recently developed framework of healthy cooking behaviour.

A conceptual framework was developed from a systematic literature review and used to guide healthy cooking classes for CCS in different settings.

One paediatric cancer hospital inpatient unit, one paediatric cancer in-hospital camp programme and two off-site paediatric cancer summer camp programmes.

One hundred and eighty-nine CCS of varying ages and thirteen parents of CCS.

Seventeen classes were taught at camps and seven classes in the hospital inpatient unit. Healthy cooking classes based on the conceptual framework are feasible and were well received by CCS.

Cooking classes for CCS, both at the hospital and at camp, reinforced the principles of the conceptual framework. Future trials should assess the dietary and anthropometric impact of evidence-based healthy cooking classes in CCS.

To examine the nutrition and young child feeding (YCF) education and training of nurses in public health clinics of Ghana’s Komenda-Edina-Eguafo-Abrem region (KEEA) in relation to global health guidelines, and how nurses served as educators for caregivers with children aged 0–5 years.

A qualitative study of semi-structured one-on-one and group interviews (n 21) following a questionnaire of closed- and open-ended questions addressing child feeding, nutrition and global health recommendations. Interviews were conducted in English, audio-recorded, transcribed and coded. Descriptive data were tabulated. Content analysis identified themes from open-ended questions.

KEEA public health clinics (n 12).

Nurses (n 41) purposefully recruited from KEEA clinics.

A model capturing nurses’ nutrition and YCF education emerged with five major themes: (i) adequacy of nurses’ basic knowledge in breast-feeding, complementary feeding, iron-deficiency anaemia, YCF and hygiene; (ii) nurses’ delivery of nutrition and YCF information; (iii) nurses’ evaluation of children’s health status to measure education effectiveness; (iv) nurses’ perceived barriers of caregivers’ ability to implement nutrition and YCF education; and (v) a gap in global health recommendations on YCF practices for children aged 2–5 years.

Nurses demonstrated adequate nutrition and YCF knowledge, but reported a lack of in-depth nutrition knowledge and YCF education for children 2–5 years of age, specifically education and knowledge of YCF beyond complementary feeding. To optimize child health outcomes, a greater depth of nutrition and YCF education is needed in international health guidelines.

To evaluate the greenhouse gas emissions (GHGE) associated with the diet of Irish adults.

GHGE were estimated by applying conversion factors to habitual food consumption data taken from the National Adult Nutrition Survey, which was representative of the population. Descriptive analyses were undertaken for GHGE for the total population, as well as accounting for energy misreporting and across categories of sociodemographic and socio-economic factors and tertiles of emissions.

Republic of Ireland.

Adults aged 18–87 years (n 1500).

The GHGE derived from daily dietary intakes was estimated as 6·5 kg of CO2 equivalents (CO2eq) per person. Males, younger consumers, those with secondary education and student employment status were associated with significantly higher GHGE. Red meat was the highest contributor to GHGE with 1646 g CO2eq arising from a mean intake of 47 g/d. Dairy and starchy staples were the next largest dietary GHGE sources, with mean daily emissions of 732 g CO2eq and 647 g CO2eq, respectively. The lowest emissions were associated with consumption of vegetables, fruits and legumes/pulses/nuts.

Based on profiling using actual food consumption data, it is evident that one single measure is not sufficient and a range of evidence-based mitigation measures with potential to lower emissions throughout the food chain should be considered. The research contributes towards an improved understanding of the climatic impact of the dietary intakes of Irish adults and can serve to inform a sustainability framework to guide action in food and nutrition policy development.

The current study sought to examine Guatemalan adolescents’ consumption of sugar-sweetened beverages (SSB), identify which individual-level characteristics are associated with SSB consumption and describe school characteristics that may influence students’ SSB consumption.

Within this observational pilot study, a questionnaire was used to assess students’ consumption of three varieties of SSB (soft drinks, energy drinks, sweetened coffees/teas), as well as a variety of sociodemographic and behavioural characteristics. We collected built environment data to examine aspects of the school food environment. We developed Poisson regression models for each SSB variety and used descriptive analyses to characterize the sample.

Guatemala City, Guatemala.

Guatemalan adolescents (n 1042) from four (two public, two private) secondary schools.

Built environment data revealed that students from the two public schools lacked access to water fountains/coolers. The SSB industry had a presence in the schools through advertisements, sponsored food kiosks and products available for sale. Common correlates of SSB consumption included school type, sedentary behaviour, frequency of purchasing lunch in the cafeteria, and frequency of purchasing snacks from vending machines in school and off school property.

Guatemalan adolescents frequently consume SSB, which may be encouraged by aspects of the school environment. Schools represent a viable setting for equitable population health interventions designed to reduce SSB consumption, including increasing access to clean drinking-water, reducing access to SSB, restricting SSB marketing and greater enforcement of existing food policies.

To better understand low-income adults’ attitudes towards participating in farmers’ markets, community-supported agriculture (CSA) and nutrition education programming.

Focus groups were held with a diverse sample of adults. Interviews were transcribed verbatim and analysed using thematic analysis.

Three affordable housing communities in Washington, DC, USA.

Participants included twenty-eight residents of the three affordable housing communities.

Four major themes emerged across groups, along with several sub-themes within each theme. These included: (i) perceptions of farmers’ markets (benefits, barriers, current participation and knowledge); (ii) perceptions of CSA (benefits, barriers and questions/concerns); (iii) need/interest in additional programming (nutrition education, non-nutrition education, qualities of programming and perceived barriers); and (iv) current health knowledge and behaviours (dietary behaviours, health recommendations and health concerns).

Adults living in urban, affordable housing communities desire access to healthy foods, but are limited by cost. Programmes could have a higher likelihood of success if they accept benefits like SNAP (the Supplemental Nutrition Assistance Program), are heavily marketed and incorporate culturally relevant nutrition education components.

The present review aimed to identify and synthesize literature on household food insecurity with respect to whether the respondent was male or female.

A systematic review of prevalence studies followed by a meta-analysis was conducted between 28 August 2014 and 19 October 2014 in seven electronic databases. The search was updated in April 2016. The included studies used experience-based measures to assess household food insecurity. Dichotomous measures of food insecurity were used. Pooled odds ratios of household food insecurity prevalence in women v. men were obtained through random-effect modelling. Quality assessment, publication bias diagnostics and subgroup analysis were also performed.

Population-based studies (i.e. non-clinical populations).

Participants aged 18 years or over.

Out of the 5145 articles initially identified, forty-two studies with a total population of 233 153 were included. In general, results showed that the odds for household food insecurity was 40 % higher in studies where women were the respondent (95 % CI 1·27, 1·54; P<0·001). Besides, subgroup analysis revealed that female-headed households were 75% (95 % CI 49–96%) more likely to be food insecure than male-headed households.

Our results confirm the existence of gender differences in reporting household food insecurity. Furthermore, they indicate that households headed by women constitute a segment of the population that is particularly vulnerable to food insecurity.

The present research sought to better understand the barriers, facilitators, attitudes and beliefs that influence the way Māori and Samoan grandparents feed their grandchildren in a deprived urban neighbourhood in New Zealand.

The research adopted a qualitative methodology that was consistent with a Kaupapa Māori research approach. Seven semi-structured interviews were conducted with grandparents to collect narrative data.

Sampling occurred in one Auckland suburb. The suburb was selected because of its high level of socio-economic deprivation and ethnic diversity.

Seven grandparents participated in the study (five Māori and two Samoan). Each participant met the inclusion criteria (i.e. they had provided at least five meals per week over the previous three months to grandchildren aged less than 24 months). Marae (i.e. meeting houses and areas used by local Māori tribes/sub-tribes) and community organisations were used to recruit participants.

A general inductive thematic analysis identified four key themes: (i) grandparents’ understanding of optimal feeding practices; (ii) economic and material factors; (iii) previous experiences and customary norms; and (iv) social support and societal pressure.

The study showed that grandparents’ complementary feeding practices in caring for infant grandchildren were influenced by upstream structural elements such as government policies related to welfare and pensions, employment, income and cultural knowledge. Frameworks that seek to achieve social justice and support cultural practices should be employed and promoted in the development of future policy and research in this area.