Infant feeding-a scoping review for Nordic Nutrition Recommendations 2023.

The 2012 edition of the Nordic Nutrition Recommendations (NNR) included recommendations on breastfeeding, based on the most recent guidelines and recommendations from major national food and health authorities and organizations, systematic reviews, and some original research. For NNR 2023, the scope has been expanded and also includes formula feeding and the introduction of solid food. The main focus in this scoping review is on infants aged 0-12 months but also considers parts both before and beyond the first year, as the concept of 'the first 1000 days' emphasizes the importance of factors during pregnancy and the first 2 years of life for immediate and later health: physical as well as emotional and mental health. Breastmilk is the natural and sustainable way to feed an infant during the first months of life. Numerous studies have indicated immediate as well as long-term beneficial effects of breastfeeding on health for both the infant and the breastfeeding mother, and from a public health perspective, it is therefore important to protect, support, and promote breastfeeding. For full-term, normal weight infants, breastmilk is sufficient as the only form of nutrition for the first 6 months, except for vitamin D that needs to be given as supplement. The World Health Organization (WHO) and several other authoritative bodies therefore recommend exclusive breastfeeding during the first 6 months. Starting solids at about 6 months is necessary for both nutritional and developmental reasons. According to the European Food Safety Authority (EFSA) and the European Society for Paediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN), solid foods are safe to give from 4 months although exclusive breastfeeding until 6 months is the desirable goal. Breastfeeding can continue together with complementary foods as long as it is mutually desired by the mother and child. If breastfeeding is not enough or for some reason discontinued before the infant is 4 months of age, the infant should be fed infant formula, and, when possible, breastfeeding should be continued alongside the formula feeding. If the infant is 4 months or older, starting with solids together with continued breastfeeding and/or formula feeding is an option. Infant formulas have been developed for infants who are not breastfed or do not get enough breastmilk. Home-made formula should not be given.

High availability of vegetables and fruit through government-funded school lunch is not reflected in 4th grade pupils' intake.

Background: An increased intake of vegetable and fruit (VF) through school meals can contribute to the prevention of non-communicable diseases. Objective: The purpose of this study was to investigate what types of VF 4th grade pupils (10-11 years old) choose, how much they eat when they are given the opportunity to serve themselves from the daily vegetable buffet available at lunch, and whether this varies with socioeconomic background and gender. Design: A cross-sectional study design was used where pupils' VF intake was measured during 5 days with a photographic method. In total, 196 pupils from nine public schools participated. Results: The results show that pupils on average ate less than one type of VF per day from the vegetable buffet. Girls, pupils with a higher socio-economic status (SES) and those with a more frequent VF intake at home, ate more types of VF per day from the vegetable buffet than their counterparts. The median intake of VF from the vegetable buffet was generally low, 20.4 g/day. The intake was two thirds higher for pupils with higher SES in comparison with pupils with lower SES; 25 g/day versus14 g/day (P = 0.001). No gender differences in grams per day of VF were identified (P = 0.123). Discussion: This study indicates that a well-stocked vegetable buffet as part of government-funded school lunch does not automatically contribute substantially to the recommended daily intake of VF among a sample of 4th grade pupils in a high-income country like Sweden. Conclusions: The results of the study can be interpreted as a missed opportunity to increase the intentional consumption of VF among pupils in a way that would have implications for public health as well as attenuating differences between socioeconomic groups.

Exploring patient satisfaction with hospital foodservice: A Swedish study using the Acute Care Hospital Foodservice Patient Satisfaction Questionnaire.

AIM: The aim of this study was to explore patient satisfaction with hospital foodservice in the Swedish setting, using a validated instrument, adding this context to the existing body of research. METHODS: The study was carried out at three hospitals employing cyclic menus and conventional cook-serve foodservice systems with centralised tray assemblies and hot-trolley distributions to the wards for service. Patient satisfaction was explored using a translated version of the validated Acute Care Hospital Foodservice Patient Satisfaction Questionnaire. Groups were compared with Mann-Whitney U-test and Kruskal Wallis test with a set significance level of P < .05. RESULTS: Questionnaires from 439 patients were included in the analysis. The majority (80%) reported an overall satisfaction of "good" or "very good." Questions related to Staff and Service received mostly the highest possible ratings, while questions related to Food Quality and Meal Size had slightly lower ratings and higher variation. Comparisons between groups showed that differences were small even when statistically significant. Low appetite and a long hospital stay had an adverse effect on overall satisfaction and food quality-related questions. Men and younger patients reported more often being hungry after and between meals. CONCLUSIONS: Hospital foodservice faces the challenge of catering to multiple patient needs. Monitoring patient satisfaction is crucial to ensure that foodservice operations remain evidence based. The Acute Care Hospital Foodservice Patient Satisfaction Questionnaire provided a general overview that indicated foodservice areas with potential for improvement, although patient satisfaction overall was high. However, patient satisfaction is a complex measure and reflexivity is required when interpreting empirical results.

Meal identity as practice - Towards an understanding of business travellers' meal practices.

Business travellers make up a large part of the customer base for the Swedish hospitality industry, accounting for 54% of the occupancy rate of Swedish hotels in 2018. Yet, very little is known about their meal habits while being at the destination of a business trip. This, even though the handling of meals in an environment that is less known to the traveller could add to the complexity of everyday life. Therefore, this study is aimed to explore actions performed by business travellers at the destination of travel as part of their meal practice with the purpose of elucidating the meal habits of this group. The research is theoretically framed within the context of social identity theory and social practice theory. A questionnaire was filled out by 538 Swedish business travellers recruited by means of self-sampling; 77% of the respondents were men, and 77% were above 45 years of age. The majority of the respondents, 67%, travelled over 50 days per annum, and 59% were located in the highest income quartile. The analysis of the data generated a general overview of the actions performed in relation to the meal, while also showing differences in actions taken based on income and gender. Women were significantly more price conscious than men and to a larger extent used technical assistance to find somewhere to eat. When travelling alone they also reported eating faster than at home and bringing back food and eat at the hotel room more often than men did. Men, in contrast, exhibited an inclination towards seeking social contexts to insert themselves in during dinners when travelling alone, as to be able to eat together with other people. The, relatively, lower income group showed more price consciousness as well as used the help of technical assistance to find somewhere to eat.

Changes in food intake patterns during 2000-2007 and 2008-2016 in the population-based Northern Sweden Diet Database.

BACKGROUND: Food intake patterns provide a summary of dietary intake. Few studies have examined trends in food intake patterns over time in large, population-based studies. We examined food intake patterns and related sociodemographic and individual characteristics in the large Northern Sweden Diet Database during the two time windows 2000-2007 and 2008-2016. METHODS: In total, 100 507 participants (51% women) who had filled in a 64-item food frequency questionnaire and provided background and sociodemographic data between 2000 and 2016 were included. Food intake patterns were evaluated for women and men separately for the two time windows 2000-2007 and 2008-2016, respectively. Latent class analysis was used to identify distinct, latent clusters based on 40 food groups. RESULTS: Among both women and men, a greater proportion of participants were classified into food intake patterns characterized by high-fat spread and high-fat dairy during 2008-2016 compared to 2000-2007. In the earlier time window, these high-fat clusters were related to lower educational level and smoking. Simultaneously, the proportion of women and men classified into a cluster characterized by high intake of fruit, vegetables, and fibre decreased from the earlier to the later time window. CONCLUSION: From a public health perspective, the increase in clusters with a high conditional mean for high-fat spread and high-fat dairy and decrease in clusters with a high conditional mean for fruit and vegetables, during the time period 2008-2016 compared to 2000-2007, is worrisome as it indicates a shift away from the recommended food habits. Subgroups of women and men with less healthy dietary patterns in the time window 2008-2016 with lower education, lower age, higher body mass index, lower levels of physical activity and more smoking were identified and future interventions may be targeted towards these groups.

Composition of School Meals in Sweden, Finland, and Iceland: Official Guidelines and Comparison With Practice and Availability.

BACKGROUND: Nutritious and attractive school meals can improve health equality and public health. Current official guidelines and recommendations on food and nutrient composition of school meals in 3 Nordic countries; Sweden, Finland, and Iceland, are described and compared with actual practice, ie, availability of foods and nutrients in served reference meals in 3 selected areas in each country. METHODS: A country comparison was made between official guidelines, and actual practice was studied in participating schools. Reference portions of school meals (N = 170) provided in 24 compulsory schools were photographed and weighed. Food and nutrient availability were compared with official guidelines in each country. RESULTS: Emphasis of recommendations on whole-grain bread in Sweden, whole grains in Finland, and fish in Iceland were reflected in food availability. The energy content of the meals provided was lower than guidelines and there was a large variation in energy content between days. CONCLUSIONS: The guidelines regarding food availability were quite well followed, but the large variation in energy and nutrient content of provided school meals between days indicates a need for standardization.

Perspective: An Extension of the STROBE Statement for Observational Studies in Nutritional Epidemiology (STROBE-nut): Explanation and Elaboration.

Nutritional epidemiology is an inherently complex and multifaceted research area. Dietary intake is a complex exposure and is challenging to describe and assess, and links between diet, health, and disease are difficult to ascertain. Consequently, adequate reporting is necessary to facilitate comprehension, interpretation, and generalizability of results and conclusions. The STrengthening the Reporting of OBservational studies in Epidemiology (STROBE) statement is an international and collaborative initiative aiming to enhance the quality of reporting of observational studies. We previously presented a checklist of 24 reporting recommendations for the field of nutritional epidemiology, called "the STROBE-nut." The STROBE-nut is an extension of the general STROBE statement, intended to complement the STROBE recommendations to improve and standardize the reporting in nutritional epidemiology. The aim of the present article is to explain the rationale for, and elaborate on, the STROBE-nut recommendations to enhance the clarity and to facilitate the understanding of the guidelines. Examples from the published literature are used as illustrations, and references are provided for further reading.

Water, juice, or soda? Mothers and grandmothers of preschoolers discuss the acceptability and accessibility of beverages.

Intake of sugary beverages is strongly associated with weight gain and obesity among children; however, differences between mothers' and grandmothers' attitudes and practices concerning young children's beverage consumption remain unclear. This is notable since about a quarter of families in the US and the UK rely on grandparents as the main providers of informal childcare. The aim of this study is to examine mothers' and maternal grandmothers' attitudes, knowledge, and practices regarding preschool aged children's beverage consumption. The analysis focuses on identifying intergenerational similarities and differences, given the potential impact that such differences might have on young children's beverage consumption habits. Twenty-two semi-structured interviews, representing eleven families, were analyzed using thematic analysis. The sample included all mother - maternal grandmother dyads from The Grandparents Study, which took place in Eugene, Oregon, USA. More than half of mothers and grandmothers met overweight/obesity criteria. Among the children (mean age 4.7 years; five girls and six boys), seven met overweight/obesity criteria. Most mothers and grandmothers were unemployed, and most reported an annual household income below 30,000 USD. The analysis identified three thematic categories: 1) mothers and grandmothers agree about the hierarchy of healthiness between and within beverages, though juice occupies an ambivalent position; 2) mothers and grandmothers cite role modeling and the home environment as important in regulating preschoolers' beverage intake; 3) mothers and grandmothers balance between restricting sugary beverages and using these beverages as treats. The results suggest that when mothers and grandmothers use soda, juice, and juice-drinks as treats, they do so within a wider dynamic of balancing practices, and within two intersecting domains: the hierarchy of beverages, including the still ambivalent status of juice as healthy or unhealthy, and the definition of 'special occasion'.

The Effect of Schooling on Basic Cognition in Selected Nordic Countries.

The present study investigated schooling effects on cognition. Cognitive data were collected as part of a research project (ProMeal) that investigated school meals and measured the intake of school lunch in relation to children's health, cognitive function, and classroom learning in four Nordic countries, among children between 10-11 years of age. It was found that Finnish pupils attending 4th grade were not, on any measure, outperformed by Norwegian and Icelandic pupils attending 5th and Swedish pupils attending 4th grade on a task measuring working memory capacity, processing speed, inhibition, and in a subsample on response- and attention control. Moreover, boys were found to perform superior to girls on tasks measuring processing speed. However, girls were found to perform better on tasks related to attention and self-control. The results are discussed in relation to the reciprocal association between cognition and schooling and whether these results reflect quality differences between schools in the four Nordic countries; most notably in comparison to Finland.

Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings.

OBJECTIVE: To develop and validate a photographic method aimed at making assessment of dietary intake in school canteens non-obstrusive, practical and feasible. METHODS: The study was conducted in two elementary schools representing two different school canteen systems; main dish being served by canteen staff (Iceland), and complete self-serving (Sweden). Food items in serving and leftovers were weighed and photographed. Trained researchers estimated weights of food items by viewing the photographs and comparing them with pictures of half and full reference portions with known weights. Plates of servings and leftovers from 48 children during five school days (n = 448 plates) and a total of 5967 food items were estimated. The researchers' estimates were then compared with the true weight of the foods and the energy content calculated. RESULTS: Weighed and estimated amounts correlated across meals both in grams and as total energy (0.853-0.977, p<0.001). The agreement between estimated energy content in school meals was close to the true measurement from weighed records; on average 4-19 kcal below true values. Organisation of meal service impacted the efficacy of the method as seen in the difference between countries; with Iceland (served by canteen staff) having higher rate of acceptable estimates than Sweden (self-serving), being 95% vs 73% for total amount (g) in serving. Iceland more often had serving size between or above the half and full reference plates compared with Sweden. CONCLUSIONS: The photographic method provides acceptable estimates of food and energy intake in school canteens. However, greater accuracy can be expected when foods are served by canteen staff compared with self-serving.

School meal provision, health, and cognitive function in a Nordic setting - the ProMeal-study: description of methodology and the Nordic context.

BACKGROUND: School meals, if both nutritious and attractive, provide a unique opportunity to improve health equality and public health. OBJECTIVE: To describe the study rationale, data collection, and background of participants in the study 'Prospects for promoting health and performance by school meals in Nordic countries' (ProMeal). The general aim was to determine whether overall healthiness of the diet and learning conditions in children can be improved by school lunches, and to capture the main concerns regarding school lunches among children in a Nordic context. DESIGN: A cross-sectional, multidisciplinary study was performed in Finland, Iceland, Norway, and Sweden on pupils (n=837) born in 2003. RESULTS: In total 3,928 pictures of school lunches were taken to capture pupils' school lunch intake. A mean of 85% of all parents responded to a questionnaire about socioeconomic background, dietary intake, and habitual physical activity at home. Cognitive function was measured on one occasion on 93% of the pupils during optimal conditions with a Stroop and a Child Operation Span test. A mean of 169 pupils also did an Integrated Visual and Auditory Continuous Performance Test after lunch over 3 days. In total, 37,413 10-sec observations of classroom learning behavior were performed. In addition, 753 empathy-based stories were written and 78 focus groups were conducted. The pupils had high socioeconomic status. CONCLUSIONS: This study will give new insights into which future interventions are needed to improve pupils' school lunch intake and learning. The study will provide valuable information for policy making, not least in countries where the history of school meals is shorter than in some of the Nordic countries.

Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): An Extension of the STROBE Statement.

BACKGROUND: Concerns have been raised about the quality of reporting in nutritional epidemiology. Research reporting guidelines such as the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement can improve quality of reporting in observational studies. Herein, we propose recommendations for reporting nutritional epidemiology and dietary assessment research by extending the STROBE statement into Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut). METHODS AND FINDINGS: Recommendations for the reporting of nutritional epidemiology and dietary assessment research were developed following a systematic and consultative process, coordinated by a multidisciplinary group of 21 experts. Consensus on reporting guidelines was reached through a three-round Delphi consultation process with 53 external experts. In total, 24 recommendations for nutritional epidemiology were added to the STROBE checklist. CONCLUSION: When used appropriately, reporting guidelines for nutritional epidemiology can contribute to improve reporting of observational studies with a focus on diet and health.

Swedish women's food habits during pregnancy up to six months post-partum: A longitudinal study.

OBJECTIVES: Diet influences the health of the foetus and the woman during pregnancy and later in life. It is therefore important to investigate pregnant women's food habits. The aim of this study was to describe women's food habits during pregnancy and up to six months post-partum. STUDY DESIGN: A Food Frequency Questionnaire (VIP-FFQ) was distributed to 163 pregnant women on five occasions during and after pregnancy. Data were analysed using Friedman's ANOVA and a Bonferroni post-hoc test. MAIN OUTCOME MEASURES: Food habits in relation to the National Food Agency's (NFA) food index. RESULTS: The pregnant women's diets were inadequate according to the NFA food index. A tendency towards an even poorer diet after delivery was identified, something which was related to an increased intake of discretionary food, e.g. sweets, cakes, cookies, crisps, ice cream, and decreased intake of fruit and vegetable. The alcohol consumption was low throughout. CONCLUSIONS: The food habits during pregnancy were inadequate compared to recommendations and these habits became unhealthier after delivery. These suggest that dietary counselling needs to be more effective and continued into the lactating period. An increased focus should be given to healthy eating from the life course perspective, not just focus on effects on the foetus and pregnancy outcomes.

"He just has to like ham" - The centrality of meat in home and consumer studies.

This study aimed to describe Discourses on meat in the school subject Home and Consumer Studies in five different northern Swedish schools. Fifty-nine students and five teachers from five different schools were recorded and in some cases video-taped during lessons. Results indicate that meat was seen as central to nutritional health, sensory experience, culture and social relationships. This positive view was challenged by an alternative Discourse where meat was threatening to health, sensory experience and psychological comfort, but this was not strong enough to affect centrality. Even when participants sought to promote the health advantages of reducing meat consumption, the dominant centrality Discourse was strengthened. This implies that the possible tension between physical and psychosocial/emotional health can make the benefits of a reduction difficult both to convey and accept. A form of critical food literacy may help teachers deconstruct the arbitrary power of the centrality Discourse, but it may also strengthen meat-eater identities because the social norms that guide food choice become salient. A redesign of Discourses might facilitate a reduction in meat consumption, but such a paradigm shift is dependent on the development of society as a whole, and can only be briefly touched upon within the limited time frames and resources of Home and Consumer Studies.

Protein intake from 0 to 18 years of age and its relation to health: a systematic literature review for the 5th Nordic Nutrition Recommendations.

The present systematic literature review is a part of the 5th revision of the Nordic Nutrition Recommendations. The aim was to assess the health effects of different levels of protein intake in infancy and childhood in a Nordic setting. The initial literature search resulted in 435 abstracts, and 219 papers were identified as potentially relevant. Full paper selection resulted in 37 quality-assessed papers (4A, 30B, and 3C). A complementary search found four additional papers (all graded B). The evidence was classified as convincing, probable, limited-suggestive, and limited-inconclusive. Higher protein intake in infancy and early childhood is convincingly associated with increased growth and higher body mass index in childhood. The first 2 years of life is likely most sensitive to high protein intake. Protein intake between 15 E% and 20 E% in early childhood has been associated with an increased risk of being overweight later in life, but the exact level of protein intake above which there is an increased risk for being overweight later in life is yet to be established. Increased intake of animal protein in childhood is probably related to earlier puberty. There was limited-suggestive evidence that intake of animal protein, especially from dairy, has a stronger association with growth than vegetable protein. The evidence was limited-suggestive for a positive association between total protein intake and bone mineral content and/or other bone variables in childhood and adolescence. Regarding other outcomes, there were too few published studies to enable any conclusions. In conclusion, the intake of protein among children in the Nordic countries is high and may contribute to increased risk of later obesity. The upper level of a healthy intake is yet to be firmly established. In the meantime, we suggest a mean intake of 15 E% as an upper limit of recommended intake at 12 months, as a higher intake may contribute to increased risk for later obesity.

Breastfeeding, introduction of other foods and effects on health: a systematic literature review for the 5th Nordic Nutrition Recommendations.

The present systematic literature review is part of the 5th revision of the Nordic Nutrition Recommendations. The overall aim was to review recent scientific data valid in a Nordic setting on the short- and long-term health effects of breastfeeding (duration of both any and exclusive breastfeeding) and introduction of foods other than breast milk. The initial literature search resulted in 2,011 abstracts; 416 identified as potentially relevant. Full paper review resulted in 60 quality assessed papers (6A, 48B, and 6C). A complementary search found some additional papers. The grade of evidence was classified as convincing, probable, limited-suggestive, and limited-no conclusion. The evidence was convincing of a protective dose/duration effect of breastfeeding against overweight and obesity in childhood and adolescence, overall infections, acute otitis media, and gastrointestinal and respiratory tract infections. The evidence was probable that exclusive breastfeeding for longer than 4 months is associated with slower weight gain during the second half of the first year which could be part of the reason behind the reduced risk of later overweight or obesity. There was also probable evidence that breastfeeding is a protective factor against inflammatory bowel disease, celiac disease, and diabetes (type 1 and 2), provides beneficial effects on IQ and developmental scores of children as well as a small reductive effect on blood pressure and blood cholesterol levels in adulthood. Other associations explored were limited-suggestive or inconclusive. In conclusion, convincing and probable evidence was found for benefits of breastfeeding on several outcomes. The recommendation in NNR2004 about exclusive breastfeeding for 6 months and continued partial breastfeeding thereafter can stand unchanged. The relatively low proportion of infants in the Nordic countries following this recommendation indicates that strategies that protect, support and promote breastfeeding should be enhanced, and should also recognize the benefits for long-term health.

Exploring dietary patterns, obesity and sources of bias: the Västerbotten Intervention Programme (VIP).

OBJECTIVE: Dietary patterns capture the overall diet and thereby provide information on how nutrients are consumed in combinations, and have been suggested to be a better method than studying single nutrients. The present study explored the relationship between dietary patterns at baseline and incidence of obesity at 10-year follow-up in women. DESIGN: A longitudinal study using baseline measurements from 1992-1996, including food intake, medication, heredity, socio-economic status, lifestyle and measured body composition, and follow-up data collected in 2002-2006 including measured body composition. SETTING: Data from the Västerbotten Intervention Programme (VIP) in Sweden. SUBJECTS: A total of 6545 initially non-obese women aged 30-50 years. RESULTS: Among women reporting plausible energy intakes, the 'Fruit and vegetables cluster' predicted the highest incidence of obesity (OR = 1·76, 95 % CI 1·11, 2·76; P = 0·015) compared with women in the other food pattern groups combined. When adjusting for metabolic factors and BMI at baseline, the risk for obesity in the 'Fruit and vegetables cluster' was attenuated to non-significance. In contrast, high intake of fruit per se was associated with a decreased risk of developing obesity (OR = 0·69, 95 % CI 0·51, 0·91; P = 0·010). CONCLUSIONS: Dietary pattern groups identified by cluster analysis are likely to reflect characteristics in addition to diet, including lifestyle, previous and current health status and risk factors for future disease, whereas intake of fruit per se was a stable indicator and less affected by baseline characteristics. These results underscore the need for complementary methods in understanding diet-disease relationships.

Diet and lifestyle factors associated with fish consumption in men and women: a study of whether gender differences can result in gender-specific confounding.

BACKGROUND: Fish consumption and intake of omega-3 fatty acids from fish are associated with a lower risk of cardiovascular disease. However, a prospective study from northern Sweden showed that high consumption of fish is associated with an increased risk of stroke in men, but not in women. The current study aimed to determine if fish consumption is differently related to lifestyle in men compared with women in northern Sweden. METHODS: Lifestyle information on 32,782 men and 34,866 women (aged 30-60 years) was collected between 1992 and 2006 within the Västerbotten Intervention Programme (a health intervention in northern Sweden). Spearman correlations coefficients (Rs) were calculated between self-reported consumption of fish and other food items. Lifestyle variables were compared between fish consumption categories. RESULTS: Fish consumption was positively associated with other foods considered healthy (e.g., root vegetables, lettuce/cabbage/spinach/broccoli, chicken, and berries; Rs = 0.21-0.30), as well as with other healthy lifestyle factors (e.g., exercise and not smoking) and a higher educational level, in both men and women. The only gender difference found, concerned the association between fish consumption and alcohol consumption. Men who were high consumers of fish had a higher intake of all types of alcohol compared with low to moderate fish consumers. For women, this was true only for wine. CONCLUSIONS: Except for alcohol, the association between fish consumption and healthy lifestyle did not differ between men and women in northern Sweden. It is important to adjust for other lifestyle variables and socioeconomic variables in studies concerning the effect of fish consumption on disease outcome.

Energy and nutrient intakes in relation to sex and socio-economic status among school adolescents in urban Cameroon, Africa.

OBJECTIVE: To assess energy and nutrient intakes and physical activity of adolescents in urban Cameroon according to sex and socio-economic status (SES). DESIGN: Cross-sectional study with adolescents randomly selected from schools in low-, middle- and high-SES areas. Weight and height were measured and information about food intake and physical activity was obtained through repeated individual 24 h recalls. Under- and over-reporting of energy intake and inadequacy of nutrient intake were assessed. SETTING: Yaoundé, Cameroon. SUBJECTS: Boys and girls aged 12-16 years (n 227). RESULTS: Boys had a lower BMI and reported higher energy expenditures and physical activity levels (PAL) than girls. Under-reporting of energy intake was large among boys and girls regardless of PAL; boys under-reported more than girls. Among those with low PAL, over-reporting of energy intake was common. Over 50% of boys and girls had protein below the recommendations. The intake of fat varied; 26% of the adolescents were below and 25% were above the recommendations. Inadequate intakes of vitamin B1, vitamin B3 and Fe were more common among girls, while boys more often had inadequate intake of vitamin A. Adolescents with low SES were more likely to be below the recommendations for fat and vitamins B2, B3, B6 and B12 than those with high SES. CONCLUSIONS: A high proportion of boys and girls reported inadequate intakes. However under- and over-reporting were also very common. Boys under-reported energy intake more than girls and inadequate nutrient intake was more frequently reported by adolescents with low SES than by those with high SES.