Szabolcs Péter

Prevalence of underweight, overweight and obesity on the basis of body mass index and body fat percentage in Hungarian schoolchildren: representative survey in metropolitan elementary schools.

Backgrounds/Aims: The incidence of obesity is increasing dramatically not only among adults, but also in children. The purpose of the survey was to assess the age- and gender-specific anthropometric data of children between the ages of 7 and 14 years who attended elementary schools in Budapest. Methods: A cross-sectional study was performed in 2005. Altogether 1,928 students (1,002 boys and 926 girls) were recruited from the schools. The representative sampling sites were selected randomly. Height and waist circumference were measured, other data were analyzed by an 8-polar bioelectrical impedance procedure. Statistical analysis was carried out using SPSS 11 for windows. Results: On the basis of body mass index (BMI), prevalence of underweight, overweight and obesity were 5.1, 18.1 and 7.4% for boys and 6.8, 19.6 and 6.3% for girls, respectively. On the basis of body fat percentage (%BF), prevalence of obesity was 17.9% for boys and 12.8% for girls. Forty nine percent of boys and 28% of girls categorized as overweight by BMI were obese according to their %BF. The difference in waist circumference between individuals categorized by BMI as normal and obese was 24.7 cm for boys and 20.5 cm for girls. Between those categorized as non-obese and obese by %BF, the difference was 17.3 cm for boys and 16.4 cm for girls. Normal and overweight boys and girls with high %BF had significantly higher waist circumferences than their counterparts with normal %BF. This means that many obese children may escape detection as obese, if classified as overweight on the basis of BMI alone. Conclusion: Results appear to underline that in addition to BMI, the determination of the %BF and waist circumference is important in epidemiological studies to identify obese subjects.

Dietary Habits of School Children: Representative Survey in Metropolitan Elementary Schools – Part Two

Background/Aims: The aim of this study was to investigate the eating habits and the nutrient intake of 11- to 14-year-old school children as part of a representative nutrition and health survey in primary schools in Budapest. Methods: A food frequency questionnaire of 875 school children, aged from 11 to 14 (449 boys and 426 girls), was recorded and evaluated. Energy and nutrient intake of 235 children (124 boys and 111 girls) was calculated in parallel by 3-day dietary record. Results: The average energy intake (MJ) was appropriate (boys: 10.40 ± 1.89; girls: 9.18 ± 1.50); protein and fat intake was somewhat higher than the Hungarian recommended dietary allowances. Sodium intake was alarmingly high. The intake of calcium and vitamin D was inadequate. The intakes of zinc, chromium, retinol, folate for both genders, and iron in the case of girls were insufficient. The daily consumption of milk and dairy products was deficient, that of vegetables and fresh fruits was rather low, while the frequency of consumption of sugar-sweetened beverages, chips, sticks and fast foods was high. Conclusions: Nutrition intervention programs should be launched among Hungarian school children.

The challenge of setting appropriate intake recommendations for vitamin E: considerations on status and functionality to define nutrient requirements.

The main function of vitamin E is to protect against scavenging of reactive oxygen species; it is the primary protective agent against lipid peroxidation. Overt vitamin E deficiency is present only in patients with severe malnutrition and certain chronic diseases. The latest Recommended Dietary Allowance for vitamin E is based on the correlation between hydrogen peroxide-induced erythrocyte lysis and plasma α-tocopherol concentrations (Institute of Medicine, United States), or the prevention of lipid peroxidation (National Nutrition Societies of Germany, Austria and Switzerland, D-A-CH). According to the current recommendations, the reference plasma concentration for vitamin E is 12 - 46 µmol/L (daily intake of 15 - 30 mg α-tocopherol equivalents). Epidemiological studies suggest a beneficial effect of vitamin E on cardiovascular health at a plasma concentration of 30 µmol/L (a daily intake of ~ 50 IU). Vitamin E is also an important micronutrient for maintaining the immune system, especially in the elderly. A workshop was organized with the main objective to propose a concept for developing markers of status, functionality, and health in the field of nutritional research, in order to define desirable vitamin E requirements in healthy individuals.

Effects of Oligofructose Containing Diet in Obese Persons

UNLABELLED In the treatment of obesity the introduction of a low-calorie diet is a fundamental requirement. The enhancement of the fiber content of food causing satiety may contribute to the observation of dietary prescriptions. Oligofructoses belong to the group of dietary fibers. AIM To study the effects of the consumption of a low-energy diet (2,000 kcal/day) completed with Jerusalem artichoke concentrate in obese adolescents and adults. METHODS 12 obese students (6 boys and 6 girls) and 6 obese women were put on a low-calorie regimen for 12 weeks, whereas 16 obese students (10 boys and 6 girls) and 17 obese women consumed the same low-calorie diet completed with Jerusalem artichoke concentrate containing 14 g/day oligofructose. Sensation of fullness was estimated. In addition to anthropometric parameters serum biomarkers of lipid and carbohydrate metabolism and adipokines were determined. RESULTS The consumption of the low-calorie diet completed with Jerusalem artichoke concentrate resulted in a diminished sensation of hunger. Body mass index and body fat percentage decreased significantly. In girls and women, the serum levels of triglycerides were also significantly reduced and the rate of insulin resistance estimated on the basis of homeostasis model assessment was also improved. CONCLUSIONS The results of this pilot study appear to demonstrate that the Jerusalem artichoke concentrate produced by a new technology can be a promising component of future diet therapy.

A Systematic Review of Global Alpha-Tocopherol Status as Assessed by Nutritional Intake Levels and Blood Serum Concentrations

The purpose of this study is to systematically review the published literature reporting vitamin E intake levels and serum concentrations in order to obtain a global overview of α-tocopherol status. Articles published between 2000 and 2012 were considered; 176 articles referring to 132 single studies were included. Applying an RDA (recommended daily allowance) of 15 mg/day and EAR (estimated average requirement) of 12 mg/day to all populations with a minimum age of 14 years, 82 and 61 % of mean and median data points were below the RDA and the EAR, respectively. Regarding serum concentrations, globally 13 % of the included data points were below the functional deficiency threshold concentration of 12 µmol/L, mostly for newborns and children. Several prospective observational studies suggest that a serum α-tocopherol concentration of ≥30 µmol/L has beneficial effects on human health. Of the reported study populations and subpopulations, only 21 % reached this threshold globally. This systematic review suggests that the α-tocopherol status is inadequate in a substantial part of the studied populations.

Selected Nutrients and Their Implications for Health and Disease across the Lifespan: A Roadmap

Worldwide approximately two billion people have a diet insufficient in micronutrients. Even in the developed world, an increasing number of people consume nutrient-poor food on a regular basis. Recent surveys in Western countries consistently indicate inadequate intake of nutrients such as vitamins and minerals, compared to recommendations. The International Osteoporosis Foundation’s (IOF) latest figures show that globally about 88% of the population does not have an optimal vitamin D status. The Lancet’s “Global Burden of Disease Study 2010” demonstrates a continued growth in life expectancy for populations around the world; however, the last decade of life is often disabled by the burden of partly preventable health issues. Compelling evidence suggests that improving nutrition protects health, prevents disability, boosts economic productivity and saves lives. Investments to improve nutrition make a positive contribution to long-term national and global health, economic productivity and stability, and societal resilience.

Nutritional Solutions to Reduce Risks of Negative Health Impacts of Air Pollution

Air pollution worldwide has been associated with cardiovascular and respiratory morbidity and mortality, particularly in urban settings with elevated concentrations of primary pollutants. Air pollution is a very complex mixture of primary and secondary gases and particles, and its potential to cause harm can depend on multiple factors—including physical and chemical characteristics of pollutants, which varies with fine-scale location (e.g., by proximity to local emission sources)—as well as local meteorology, topography, and population susceptibility. It has been hypothesized that the intake of anti-oxidant and anti-inflammatory nutrients may ameliorate various respiratory and cardiovascular effects of air pollution through reductions in oxidative stress and inflammation. To date, several studies have suggested that some harmful effects of air pollution may be modified by intake of essential micronutrients (such as B vitamins, and vitamins C, D, and E) and long-chain polyunsaturated fatty acids. Here, we review the existing literature related to the potential for nutrition to modify the health impacts of air pollution, and offer a framework for examining these interactions.

Lifestyle of School Children: Representative Survey in Metropolitan Elementary Schools – Part One

Background/Aims: The prevalence of overweight and obesity among school children is increasing dramatically. Obesity is multifactorial and depends on lifestyle as well as genetic components. The purpose of the survey was to investigate the lifestyle of 7- to 14-year-old children attending elementary schools in Budapest. Methods: The research was questionnaire-based. Children were asked to answer questions about their leisure activities, physical exercise, nutritional, eating, and smoking habits. Results: Many children live a sedentary life and are dissatisfied with their body weight. One in 5 boys and 1 in 3 girls have been on a slimming diet at least once. About two-thirds of the children regularly consumed vitamin and/or mineral supplements and at the same time just over half of them knew how much fruit should be eaten daily. School children in the upper classes did not eat 5 times a day. More than 5% of the 11- to 14-year-old boys and more than 10% of the girls smoked regularly.Conclusions: According to our results, the unfavorable lifestyle of the great majority of Hungarian school children may have implications for their health during adulthood.

Nutrient Status Assessment in Individuals and Populations for Healthy Aging - Statement from an Expert Workshop

A workshop organized by the University Medical Center Groningen addressed various current issues regarding nutrient status of individuals and populations, tools and strategies for its assessment, and opportunities to intervene. The importance of nutrient deficiencies and information on nutrient status for health has been illustrated, in particular for elderly and specific patient groups. The nutrient profile of individuals can be connected to phenotypes, like hypertension or obesity, as well as to socio-economic data. This approach provides information on the relationship between nutrition (nutrient intake and status) and health outcomes and, for instance, allows us to use the findings to communicate and advocate a healthy lifestyle. Nutrition is complex: a broader profile of nutrients should be considered rather than focusing solely on a single nutrient. Evaluating food patterns instead of intake of individual nutrients provides better insight into relationships between nutrition and health and disease. This approach would allow us to provide feedback to individuals about their status and ways to improve their nutritional habits. In addition, it would provide tools for scientists and health authorities to update and develop public health recommendations.

Conventional foods, followed by dietary supplements and fortified foods, are the key sources of vitamin D, vitamin B6, and selenium intake in Dutch participants of the NU-AGE study

With aging, energy needs decrease, necessitating a more nutrient-dense diet to meet nutritional needs. To bridge this gap, the use of nutrient-dense foods, fortified foods, and dietary supplements can be important. This observational study aims to describe current micronutrient intakes of Dutch elderly and to identify the contribution of nutrient-dense foods, fortified foods, and dietary supplements to the intake of micronutrients that are often inadequately consumed in Dutch elderly. Data of 245 Dutch volunteers from the NU-AGE study aged 65 to 80 years were used. Dietary intake was assessed by means of 7-day food records, and dietary supplement use was recorded with an additional questionnaire. Information on fortified foods was obtained from the Dutch Food Composition Table 2011. Nutrient density of foods was evaluated using the Nutrient Rich Food 9.3 score. The percentages of participants not meeting their average requirement were high for vitamin D (99%), selenium (41%), and vitamin B6 (54%) based on conventional foods and also when taking into account fortified foods (98%, 41%, and 27%, respectively) and vitamin and mineral supplements (87%, 36%, and 20%, respectively). Conventional foods were the main source of vitamin D, vitamin B6, and selenium intake (42%, 45%, and 82%, respectively), followed by vitamin and mineral supplements (41%, 44%, and 18%) and fortified foods (17%, 11%, and 1%). Foods with the highest nutrient density contributed most to total vitamin B6 intake only. To optimize nutrient intakes of elderly, combinations of natural food sources, fortified foods, and dietary supplements should be considered.