The Effectiveness of Dietary Approaches to Stop Hypertension Diet Intervention in Persons with Arterial Hypertension and Obesity: A Key Role of the Patients' Personality Profile.

BACKGROUND/AIMS: Benefits resulting from weight loss and dietary approaches to stop hypertension (DASH) diet in the treatment of arterial hypertension led to a search for a better therapy that would include psychological factors. The present study aimed to assess the relationship between the personality traits included in the Big Five personality traits and the effectiveness of treatment for weight loss in patients with essential hypertension and excessive body weight. METHODS: The study involved 84 patients with essential hypertension, overweight or obesity, managed by a hypertensiologist. All patients underwent a 3-month diet treatment as part of the development process of an individualised eating plan that follows the principles of DASH diet and food education. Body mass index and DASH index were calculated before and after the therapy. NEO Five-Factor Inventory was applied to measure psychological variables. RESULTS: The intervention led to a statistically significant increase of DASH index measured before and after treatment. There was a significant correlation between the increase of DASH index and gender. Patients presented higher intensity of openness to experience, extraversion, conscientiousness and lower levels of neuroticism and agreeableness compared to general population. CONCLUSION: The influence of psychological variables on the observed difference between men and women in DASH values and weight loss was not demonstrated.

Difficulties in the dietary management of a girl with two diseases requiring a special diet.

3-Methylcrotonylglycinuria (3-MCG) is an autosomal recessive inborn error of leucine metabolism caused by the deficiency of 3-methylocrotonyl-CoA carboxylase (3-MCC deficiency). It is the most commonly detected organic aciduria in newborn screening conducted by tandem mass spectrometry (MS/MS) [1, 2]. The clinical phenotype is heterogeneous, ranging from asymptomatic to acute metabolic decompensations [3, 4]. Although at least in severe cases and in acute life threatening episodes limiting natural protein intake (particularly leucine) together with high caloric intake during catabolic periods is required, the need for specific dietary management often seems questionable [2]. In contrast with the 3-MCC deficiency, in diabetes mellitus type 1 (DM1) a diet based on carbohydrate and protein-fat exchangers is beyond dispute. However, as DM1 is quite a common disease, it may occur in a single patient with a rare disease, such as 3-MCC deficiency.

Celiac disease on YouTube - a study of the Polish content available on the popular video-sharing website.

Celiac disease affects about 1% of the population. Since most Polish households have a broadband Internet connection, a lot of people use web resources to learn about health and disease. YouTube service (www.youtube.com) offers a lot of videos concerning celiac disease. However, the credibility of the Polish videos available on YouTube and concerning celiac disease has never been analyzed. AIM: The aim of the study was to determine whether the YouTube service offers valuable content for Polish people affected by celiac disease. MATERIALS AND METHODS: One hundred and fifty-four unique videos devoted to celiac disease and available in the Polish language were identified and critically assessed. Each video was categorized due to its topic(s), and evaluated for its credibility by two independent researchers. RESULTS: In general, 127 (82.5%) videos were found to be credible. The most credible categories of content presented organizations and events related to celiac disease/celiac society, followed by culinary recipes (100.0, 100.0, and 95.6% of credible videos, respectively). The least trustworthy categories were devoted to pathobiology and advertisements (55.6 and 54.3% of credible videos, respectively). CONCLUSIONS: YouTube service can serve as a supplementary source of knowledge for people affected by celiac disease, after careful selection of trustworthy content.

[Hyperuricemia in obese patients with pharmacologically treated essential hypertension].

INTRODUCTION: Hyperuricemia and gout are a growing health problem worldwide. Their etiology is complex, and usually caused by excessive production of uric acid and/or impaired excretion. Some drugs used in the treatment of high blood pressure furthermore increase the risk of hyperuricemia. An additional risk factor for hyperuricemia is obesity. Thus far, there is no consensus on the treatment of patients with asymptomatic hyperuricemia, despite a large number of studies conducted worldwide. THE AIM: To evaluate the prevalence of hyperuricemia among patients with essential hypertension and obesity, pharmacologically treated with combination therapy. MATERIAL AND METHODS: A total of 109 obese patients (mean BMI=34.6±3.5 kg/m2) were included in this study, selected from the outpatients at the Clinic of Arterial Hypertension, the unit of the Cardinal Stefan Wyszynski Institute of Cardiology in Warsaw. Patients were treated with at least two antihypertensive drugs. Blood pressure, uric acid and insulin levels were measured among patients. RESULTS: The average systolic blood pressure and diastolic blood pressure were of 131±5,9 and 84.6±3.6 mmHg respectively, the average uric acid level of 6.4±1.5 mg/dl, and the average level of insulin 17.6±11.0 mU/L. Hyperuricemia was found in 33 patients (27.5% of subjects). The uric acid level was significantly higher among men. A positive correlation between the serum uric acid concentration of serum insulin (r = 0.27, p <0.001), age (r = 0.21, p <0.002) and BMI patients (r = 0.26, p <0.002) has been shown. There were no significant differences in the concentration of uric acid among patients receiving multiple antihypertensive agents. CONCLUSION: The incidence of hyperuricemia demonstrated in this study confirms the findings of other authors and indicates a fairly common prevalence of this phenomenon among a population of patients with hypertension. Individually adjusted multidrug antihypertensive therapy does not seem to affect significantly the concentration of uric acid, but further research is needed in this respect.

[The impact of the consumption of vegetables, fruits, coffee and tea on the development of colorectal carcinoma]. / Wplyw spozycia warzyw, owoców, herbaty oraz kawy na rozwój raka jelita grubego.

The development of colorectal carcinoma is a multistep process of accumulation of mutations and epigenetic changes associated with DNA repair, proliferation, apoptosis, intra- and extracellular signaling, adhesion and other physiological functions of cells and tissues. A long period of development, high colorectal carcinoma-related mortality as well as significant social and economic costs due to this condition are prerequisites for seeking efficient methods of cancer prevention, including nutritional approach. A number of bioactive components of food is extensively tested for antitumor activity, however limited number of reliable studies on humans impedes the formulation of unequivocal nutritional recommendations. Plant products represent a rich source of numerous phytochemicals endowed with anticancer potential due to, first of all, their free radical scavenger activity. The purpose of this paper was to present the relationship between consumption of selected foods reach in numerous bioactive compounds with proven or putative anticancer activity - vegetables, fruits, coffee and tea - and the development of colorectal carcinoma, based on selected studies. A number of controversies related to the anti-tumor potential of the above ingredients was also discussed.

[The impact of the consumption of fiber and milk on the development of colorectal carcinoma]. / Wplyw spozycia blonnika oraz mleka na rozwój raka jelita grubego.

Colorectal carcinoma (CRC) is a diet-related disease. The high incidence of CRC is related to the excessive consumption of certain foods and a westernized lifestyle of contemporary societies. Obesity and low physical activity remain significant risk factors for CRC development. Molecular pathogenesis of CRC is fairly well recognized, which contributes to the formulation of hypotheses and conducting research on the participation of nutritional factors in the CRC development. This contribution remains diverse and for many food components a protective effect on colorectal carcinogenesis has been demonstrated. The aim of this review is to present a relationship between consumption of two selected components of the diet - fiber and milk - and the development of colorectal carcinoma, based on the review of literature.

[The principles of nutrition therapy of gout and hyperuricemia]. / Zasady dietoterapil dny moczanowej i hiperurykemii.

In 2012 the updated guidelines for the treatment of gout were published by the American College of Rheumatology (ACR), which underline the necessity of comprehensive treatment in this condition. According to the European League Against Rheumatism (EULAR), treatment of comorbidities, lifestyle modifications and proper diet may be of significant importance. In the primary care settings in Poland there is virtually no access to qualified dieticians. The nutritional counseling is sometimes implemented--usually to a very limited extent--by primary care physicians. It is believed that proper diet may improve the prognosis and quality of life in patients with gout. The aim of the work is to present the principles of nutrition therapy in gout and hyperuricemia, in the context of their pathogenesis. The key principles of nutrition therapy in the above mentioned conditions include a restriction of purine amount in the diet and reaching the proper body weight. Optimal hydration and alcohol elimination are also beneficial. Furthermore, some food ingredients can affect the plasma level of uric acid in the mechanisms irrelevant of their purine load.

[Mercury pollution in selected food products in Poland in the context of their health safety]. / Zanieczyszczenie rtecia wybranych produktów spozywczych w Polsce w kontekscie ich bezpieczenstwa zdrowotnego.

Mercury is a silvery-white chemically active transition metal without known physiological role. It is also a toxin accumulated in living organisms--especially in the aquatic creatures (fish and shellfish). Mercury compounds are involved in biogeochemical cycles (especially atmospheric and hydrobiologic), and thus they become contaminants of food. Such process is facilitated by the increasing environmental chemization. Toxic effects of mercury compounds result from their high affinity to sulfur (sulfhydryl groups of amino acids), accumulation in parenchymal organs, metallic mercury lipophilicity as well as long biological half-life period. In Poland the major sources of mercury exposure in diet are fish products and mushrooms. The role of mercury in human toxicology was presented in the work, along with a review of the literature concerning mercury content in selected food products in Poland. In general, most of foods do not pose a threat to consumers' health. Some restrictions in the amount of predatory fish and mushrooms consumed by pregnant and breastfeeding women as well as small children should be however recommended.

Organic Food Consumption and Perception among Polish Mothers of Children under 6 Years Old.

Pro-environmental attitudes, including organic food consumption, can reduce negative impact on the environment. The consumption of organic food in Poland is rather low, but the ecological awareness of Poles is steadily increasing. The aim of the study was to assess the frequency and factors influencing the consumption of organic products and to analyze the perception of such food by mothers of children under 6 years of age (n = 667). The survey was conducted between March 2020 and May 2021 in three voivodships in Eastern Poland. The results of the survey indicate that the majority of respondents are occasional consumers of organic food (51%). The most commonly consumed organic products are eggs, vegetables and fruits, whereas the least consumed are alcoholic beverages, coffees and ready-to-eat meals. The responders' main characteristics of organic food are as follows: no genetic modification/GMO-free, no synthetic additives and having organic certification. Statistically significant correlations were found between the frequency of organic food consumption and education, financial situation as well as familiarity with the logo of the organic certificate and verifying that it is present on the packaging. The most common reasons for consuming organic food were health issues, while the high price was declared as the main barrier.

Dietary Intervention Effectiveness, Clinical Outcomes and Nutrient and Salicylate Intakes in Older Adults Living in Long-Term Care Homes: The Results from the Senior's Plate Project.

Optimal nutrition is an important part of the therapeutic process offered to patients in long-term care, as it can significantly influence their nutritional and health status. The aim of this study was to assess the impacts of a dietary intervention on the nutritional status, clinical outcomes and selected nutrient and salicylate intakes among older adults living in a long-term care nursing home. To achieve the research goal, a prospective, non-randomized, baseline-controlled intervention study was conducted. The study was conducted within the framework of the "Senior's Plate Project", a project established in 2018 by the Polish Society of Dietetics. METHODS: A 3 month dietary intervention, which included one serving of supplementary food, served as a second breakfast (Nestle Sinlac). Energy, nutrients and salicylates intakes were estimated on the basis of the menus. Food and beverage intakes among residents were verified by health care personnel. Anthropometric measurements and clinical examinations were conducted according to standard procedures at baseline and after intervention. RESULTS: Of the 38 residents qualified for the study, 29 completed the program. Residents' body mass index (BMI) values ranged from 13.3 kg/m2 to 34 kg/m2. A BMI < 22 kg/m2, indicating underweight, was found in 19 subjects. The dietary intervention resulted in increased body weight (57.8 ± 12.3 vs. 59.4 ± 12.6 kg), BMI (22.4 ± 4.0 vs. 23.0 ± 4.1 kg/m2) and body fat (19.2 ± 8.7 vs. 20.6 ± 8.9 kg). Significant changes in the levels of biochemical parameters, including serum calcium (8.7 vs. 9.5 mg/dL), potassium (4.1 ± 0.6 vs. 4.5 ± 0.5 mmol/L) and zinc (74.1 ± 10.9 vs. 109.0 ± 20.4 µg/dL), were observed. Energy, protein, fat and carbohydrate intakes were significantly higher in the third month of the intervention as compared to the baseline. The estimated medial daily intake of salicylates was low and ranged from 0.34 mg to 0.39 mg. CONCLUSIONS: The dietary intervention resulted in beneficial and significant changes in the nutritional status, biochemical parameters and nutrition of residents of the long-term care home. These results suggest that practical and individualized approaches are required to improve the nutritional status and clinical outcomes of nursing homes residents.

Levothyroxine Interactions with Food and Dietary Supplements-A Systematic Review.

Levothyroxine (l-thyroxine, l-T4) is a drug of choice for treating congenital and primary hypothyroidism. Although clinically significant interactions between l-T4 and food can alter the safety and efficacy of the treatment, they still seem to be generally underestimated by patients, physicians and pharmacists. This review aimed to investigate the effects of meals, beverages, and dietary supplements consumption on l-T4 pharmacokinetics and pharmacodynamics, to identify the most evident interactions, and to perform the recommendations for safe co-administering of l-T4 and food. A total of 121 studies were identified following a systematic literature search adhering to PRISMA guidelines. After full-text evaluation, 63 studies were included. The results proved that l-T4 ingestion in the morning and at bedtime are equally effective, and also that the co-administration of l-T4 with food depends on the drug formulation. We found limited evidence for l-T4 interactions with coffee, soy products, fiber, calcium or iron supplements, and enteral nutrition but interestingly they all resulted in decreased l-T4 absorption. The altered l-T4 efficacy when ingested with milk, juices, papaya, aluminium-containing preparations, and chromium supplements, as well as observed enhancement effect of vitamin C on l-T4 absorption, shall be further investigated in larger, well-designed studies. Novel formulations are likely to solve the problem of coffee, calcium and iron induced malabsorption of l-T4. Maintaining a proper time interval between l-T4 and food intake, especially for coffee and calcium, or iron supplements, provides another effective method of eliminating such interactions.

Effectiveness of Personalized Low Salicylate Diet in the Management of Salicylates Hypersensitive Patients: Interventional Study.

Salicylic acid and its derivatives (including acetylsalicylic acid/aspirin) are popular in medicine. They also occur naturally in many food products. The aim of the study was to investigate the effect of the personalized low salicylate diet (PLSD) on the reduction of asthma, rhinosinusitis and urticaria symptoms in patients with hypersensitivity to aspirin (ASA) or nonsteroidal anti-inflammatory drugs (NSAIDs). To achieve the research goal, a prospective, nonrandomized, baseline-controlled intervention study was conducted. Thirty patients diagnosed with NSAIDs hypersensitivity, who despite pharmacotherapy had symptoms of hypersensitivity, were included in the study. The PLSD was recommended for all participants for a period of two to four weeks. The intensity of subjectively declared symptoms of asthma, rhinosinusitis and urticaria were measured before and after dietary intervention, using, respectively, the asthma control test (ACT), the sino-nasal outcome test (SNOT-22) and the four-item itch questionnaire (FIIQ). Diet adherence and salicylate intake were measured by a 3-day food record. The severity of symptoms improved significantly after the intervention. The median of the ACT score was 24 scores before and 25 after the dietary intervention (p < 0.002), the median of the SNOT-22 score was 25 before and 13 after a dietary intervention (p < 0.0002) and the median of the FIIQ score was 5 before and 0 after a dietary intervention (p < 0.0002). The intake of salicylates decreased from 0.79 mg/day (before intervention) to 0.15 mg/day (p < 0.001) (during intervention). Although the usefulness of a low salicylate diet in the treatment of salicylate hypersensitivity is controversial, the results of our study indicate that the PLSD may have a positive effect in reducing symptoms of salicylate hypersensitivity and could be an additional tool supporting the therapy of these patients.

The Association between the Type of Delivery and Factors Associated with Exclusive Breastfeeding Practice among Polish Women-A Cross-Sectional Study.

The type of delivery influences breastfeeding, both in terms of initiation and duration. The aim of the study was to determine the association between the type of delivery and factors associated with exclusive breastfeeding (EBF) practice among Polish women. Data on sociodemographic variables, pre-pregnancy weight, height, course of pregnancy, type of delivery and duration of breastfeeding were collected using a Computer-Assisted Web Interview. Of the 1024 breastfeeding women who participated in the study, 59.9% gave birth vaginally and 40.1% gave birth by caesarean section. The chance of starting EBF [OR: 0.478; 95% Cl: 0.274, 0.832] and continuing it for four months [OR: 0.836; 95% Cl: 0.569, 0.949] was lower in the case of caesarean delivery. Starting EBF was negatively affected by pre-pregnancy overweight status and obesity in the case of caesarean delivery. EBF practice for four months was negatively affected by age [18-24 years and 25-34 years], elementary education and average income [2001-4000 PLN] in the case of caesarean delivery. A negative impact on the chance of EBF for six months was also observed for younger age [18-24 years], elementary and secondary education and average income [2001-4000 PLN] in the case of caesarean delivery. There was no association between starting EBF and age, net income, place of living, pregnancy complications or the child's birth weight category in the case of both subgroups, as well as between education and previous pregnancies in the case of vaginal delivery. These results suggest that women who deliver by caesarean section need additional breastfeeding support.

Factors Influencing the Duration of Breastfeeding among Polish Women.

OBJECTIVE: The study aimed to analyse the factors that influence the duration of breastfeeding among Polish women. MATERIALS AND METHODS: The study group consisted of 1,024 mothers of children aged 6-18 months who were breastfeeding or are currently breastfeeding. Data were collected through a computer-assisted Web interview. Univariate analysis and correspondence analysis were performed to determine the predictors of exclusive breast-feeding and breastfeeding among Polish women. RESULTS: Maternal age, maternal education, pre-pregnancy body mass index, voivodeship, birth weight and due time had a significant impact on breastfeeding duration (p < 0.05). Mothers who were older (35± years of age), had a higher level of education and lived in mid-sized cities were more often breastfeeding exclusively, in accordance with the World Health Organization's recommendations. Women who were younger, had a lower level of education, lived in rural areas, and had a lower BMI breastfed exclusively for a shorter period. The most frequently suggested reason for breastfeeding cessation was maternal concerns about insufficient milk supply (41%). The percentage of women who gave up breastfeeding before the 6th month following the delivery was the highest in the northeastern region of Poland (53%), whereas the percentage of women who stopped exclusive breastfeeding was the highest in the southwest region of Poland (69.4%). CONCLUSIONS: Our study highlights that the reasons for breastfeeding cessation are often complex. Therefore, the promotion of breastfeeding for the first 6 months of life should be a social responsibility.

Intake of Dietary Salicylates from Herbs and Spices among Adult Polish Omnivores and Vegans.

There is a growing body of evidence that a diet rich in bioactive compounds from herbs and spices has the ability to reduce the risk of chronic diseases. The consumption of herbs and spices is often overlooked in the studies on food intake. However, measurement of dietary intake of these products, as a source of bioactive compounds, including salicylates, has recently gained much significance. The aims of the study were (i) to assess the intake of herbs and spices at the individual level and (ii) to calculate the dietary salicylates intake from herbs and spices among adult omnivores and vegans. The study group consisted of 270 adults aged 19 to 67 years, including 205 women and 65 men. Among all, 208 individuals were following an omnivorous diet while 62 were vegans. A semi-quantitative food frequency questionnaire (FFQ) was designed to assess the habitual intake of 61 fresh and dried herbs and spices during the preceding three months. The five most frequently eaten herbs among omnivores were parsley, garlic, dill, marjoram and basil, while among vegans they were garlic, parsley, ginger, basil and dill. An average intake of all condiments included in the study was 22.4 ± 18.4 g/day and 25.8 ± 25.9 g/day for both omnivores and vegans, respectively (p = 0.007). Estimated medial salicylates intake was significantly higher among vegans (p = 0.000) and reached 5.82 mg/week vs. 3.13 mg/week for omnivores. Our study confirmed that herbs and spices are important sources of salicylates; however, the type of diet influenced their level in the diet. Vegans consume significantly more total salicylates than omnivores.

Dissatisfaction with Body Weight among Polish Adolescents Is Related to Unhealthy Dietary Behaviors.

The aims of the study were to determine the socio-demographic factors that may affect body weight dissatisfaction and to analyze the relationship between eating habits and dissatisfaction with body weight among a national random sample of Polish adolescents aged 13-19 years. Data on gender, age, level of education, body weight status, screen time, body weight satisfaction and selected nutritional behaviors were collected using a questionnaire. Body mass status was assessed based on weight and height measurements. A total of 14,044 students from 207 schools participated in the study. A significant effect of gender, age, level of education, body weight status and screen time status on the participants' dissatisfaction with the body weight was observed. The greater prevalence of body weight satisfaction was observed among boys, younger subjects, secondary school students, adolescents with normal body weight status and those with screen time up to 2 h. Whereas girls, older study participants (17-19 years old), overweight/obese adolescents and subjects with screen time over 4 h were more often dissatisfied with body weight. Furthermore, it has been shown that participants dissatisfied with their body weight less often met dietary recommendations. These findings can help dietitians, nutritionists and healthcare professionals to provide age-specific and gender-specific nutrition strategies to promote healthy lifestyle among school-going adolescents.

Reduced Screen Time is Associated with Healthy Dietary Behaviors but Not Body Weight Status among Polish Adolescents. Report from the Wise Nutrition-Healthy Generation Project.

Screen time (ST) not only affects physical activity but can also be associated with dietary behaviors. Both of these factors determine the health and development of adolescents. The aims of the study were: 1. to analyze the relationship between ST and nutritional behaviors among adolescents; 2. to examine this association in relation to body weight status. Data on the ST duration and nutritional behaviors were collected using a questionnaire. Body mass status was assessed based on weight and height measurements. A total of 14,044 students aged 13-19 years old from 207 schools participated in the study. A significant relationship between ST and gender, age and type of school was observed, but not body weight status. The average ST duration increased with age (from 2.6 h among 13 years old to 3.2 h among 19 years old), and was significantly higher among boys in all age categories (2.7 h vs. 2.5 h in the youngest age group, and 3.5 h vs. 3.0 h in the oldest age group, respectively). The chance for meeting the recommendation for ST in a group of girls (regardless of age) was almost 50% higher compared to boys. Meeting ST recommendation (≤2 h) was associated with a greater odds ratio for favorable nutritional behaviors in the whole group, with exception of drinking milk or milk beverages, and significantly reduced the odds ratio of adverse dietary behaviors (drinking sweet beverages, consumption of sweets and fast food) in the whole group and by gender. More research is needed to clarify the possible cause-and-effect relationships between ST and dietary behaviors.

Dietary salicylates in herbs and spices.

The aim of this study was to determine dietary salicylate content in selected culinary herbs and spices, using the RP-HPLC method with fluorescence detection. The highest concentrations of salicylates were found in dried basil and cumin, followed by dried oregano and cloves. Our research contributes to the global database of salicylate content in food products.

Effectiveness of Individual Nutrition Education Compared to Group Education, in Improving Anthropometric and Biochemical Indices among Hypertensive Adults with Excessive Body Weight: A Randomized Controlled Trial.

OBJECTIVE: The study aims to compare the effectiveness of individual and group nutrition education methods in improving key anthropometric and biochemical markers in drug-treated, overweight-obese hypertensive adults. METHODS: The randomized trial included 170 patients with pharmacologically well-controlled primary hypertension and body mass index (BMI) ≥ 25 kg/m2. For six months, the patients received six sessions, either one-to-one individual nutrition education (IE, n = 89) or group education (GE, n = 81), developed by dietitians. Anthropometric measurements, body composition, and fasting measures of biochemical parameters were obtained at baseline and after six months of intervention. RESULTS: 150 patients completed the nutrition education program. The IE group significantly improved in many parameters compared to the GE group, including weight (p < 0.001), waist circumference (p < 0.001), BMI (p < 0.001), systolic and diastolic blood pressure (BP) (p < 0.001), fasting plasma glucose (p = 0.011), oral glucose tolerance test (OGGT) (p = 0.030), and insulin resistance (homeostatic model assessment of insulin resistance, HOMA-IR) (p < 0.001). The groups did not differ in terms of total cholesterol, high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) concentrations. CONCLUSION: Individual nutrition education is more effective than group education in terms of improving anthropometric and biochemical indices in overweight-obese hypertensive adults.

Nutritional Behaviors of Polish Adolescents: Results of the Wise Nutrition-Healthy Generation Project.

BACKGROUND: Recognition of the dominant dietary behaviors with respect to gender and specific age groups can be helpful in the development of targeted and effective nutritional education. The purpose of the study was to analyze the prevalence of the selected eating behaviors (favorable: Consuming breakfasts, fruit, vegetables, milk and milk beverages, whole grain bread and fish; adverse: Regular consumption of sweets, sugared soft drinks and fast-foods) among Polish adolescents. METHODS: Data on the nutritional behaviors were collected using a questionnaire. Body mass status was assessed based on weight and height measurements. RESULTS: 14,044 students aged 13-19 years old from 207 schools participated in the study. Significant differences were found in the nutritional behaviors depending on age, gender and nutritional status. Favorable nutritional behaviors corresponded with each other, the same relationship was observed for adverse behaviors. The frequency of the majority of healthy eating behaviors decreased with age, whereas the incidence of adverse dietary behaviors increased with age. Underweight adolescents more often consumed sugared soft drinks, sweets and fast food compared to their peers with normal and excessive body mass. CONCLUSIONS: A significant proportion of adolescents showed unhealthy nutritional behaviors. Showing changes in the incidence of nutritional behaviors depending on age, gender and body weight status, we provide data that can inform the development of dietary interventions tailored to promote specific food groups among adolescents on different stages of development to improve their diet quality.