Orthorexia nervosa - the border between healthy eating and eating disorders.

The term orthorexia nervosa (ON), presented in 1997 in Yoga Journal by Dr. Steven Bratman, sheds new light on the view on healthy eating habits. He showed that persistent thinking about nutrition does not necessarily have to be associated with anorexia or bulimia, and may turn into something so far unknown - obsessive control over the healthiest eating style, resulting in numerous self-imposed restrictions and in the long run, without appropriate therapy, leading to the deterioration of the current state of health. Orthorexia can have many consequences not only on mental health, but also on physical health. For this reason, the development of standard diagnostic and classification criteria for orthorexia nervosa is a priority. The problem of eating disorders should be the subject of epidemiological research, which will take into account demographic, cultural and socio-economic conditions appropriate for a given population, and will also take into account the pressure of factors related to the food market.

Body Composition and Anthropometric Indicators in Children and Adolescents 6-15 Years Old.

The problem of overweight and obesity among children and adolescents has now become a major public health challenge worldwide. The aim of this study was to assess the effect of age and gender on body composition components and anthropometric indices of children and adolescents aged 6-15 years; in addition, the study aimed to assess body composition indices in relation to BMI (Body Mass Index) levels. The study was conducted at the end of 2019 and in the first quarter of 2020 among 181 pupils attending primary schools. Waist circumference, hip circumference, body weight, and body height were measured. The collected data were used to calculate and then to analyse BMI, WHR (Waist-Hip Ratio), and WHtR (Waist to Height Ratio) indices. Body composition was determined with the use of the Bioelectrical Impedance Analysis (BIA). The analyses' statistics were performed using IBM SPSS Statistics 24 and Excel. The statistical methods used included Chi2 tests of independence, one-factor analysis of variance, and two-factor analysis of variance taking into account the level of α = 0.05. Based on the results, there were no statistically significant differences in the gender and age distributions of the BMI groups. However, the analysis of interaction effects confirmed that there were statistically significant differences according to pubertal age and gender in body fat, muscle mass, hydration, and WHR. Body composition in boys and girls before the age of 12 is similar while, after the age of 12, there are differences between boys and girls in terms of body composition so there is a need to deepen the assessment of body mass, especially in adolescents at the age of puberty, by body composition analysis using the BIA method.

Vitamin D in SARS-CoV-2 infection.

Background: Background. SARS-CoV-2 virus is one of the largest RNA viruses, included in the coronavirus group, showing tropism to airway epithelial cells. SARS-CoV-2 causes an acute respiratory infectious disease, Covid-19. According to WHO reports, mortality due to Covid-19 is higher in the elderly and in those burdened with comorbidities such as diabetes, obstructive pulmonary disease, coronary artery disease, cancer, hypertension, hepatitis B, obesity or chronic kidney disease. Objective: The aim of the study was to review the current literature on the influence and importance of vitamin D levels on the course of SARS-CoV-2 infection. Material and method: A systematic review of studies published from January 1, 2009 to June 31, 2021 has been performed. For this purpose, bibliographic databases such as PubMed and Scopus were searched. The following keywords and combinations were used: Covid-19, vitamin D, 25-hydroxy-vitamin D, vitamin D supplementation, SARS-CoV-2. Results: It has been shown that vitamin D plays an important role in the mechanisms of the innate immunity in the course of the acute respiratory infections. The overlapping factors of the severity of COVID-19 disease, vitamin D deficiency, and the prevalence of obesity, age scare, ethnicity, has led some researchers to hypothesize that vitamin D supplementation may be promising as a preventive or therapeutic measure for COVID-19. Conclusions: A very important factor that has an immunomodulatory character is vitamin D, the adequate supplementation of which can be a preventive or therapeutic measure in case of SARS-CoV-2 infection, especially in elderly people, with obesity and other chronic diseases.

Malnutrition in Obesity: Is It Possible?

BACKGROUND: The World Health Organization (WHO) classifies malnutrition as the biggest threat to public health worldwide, and this condition is observed in 20-60% of hospitalized patients. Malnutrition is a state of the body in which due to insufficient supply or incorrect absorption of essential nutrients, the body composition changes and the body's functions are impaired. Malnutrition is associated not only with reduced body mass index but also with obesity. SUMMARY: Obesity is defined as a paradoxical state of malnutrition, which despite excessive energy consumption is associated with a shortage of individual microelements. Deficiency or lack of homeostasis of essential micronutrients can significantly affect daily performance, intellectual and emotional state, but also the physical state of the body. Food deficiency can also contribute to further weight gain or the development of other metabolic diseases. Micronutrient deficiency may include not only incorrect dietary choices and insufficient access to nutrient-rich foods but also changes in the absorption, distribution or excretion of nutrients, and altered micronutrient metabolism resulting from systemic inflammation caused by obesity. An effective therapy method recommended for people with morbid obesity is bariatric surgery aimed at both weight loss and improving quality of life. Unfortunately, the effects of these treatments are often medium- and long-term complications associated with micronutrient deficiency as a result of reduced consumption or absorption. Therefore, the use of bariatric surgery in patients with extreme obesity can affect the metabolism of microelements and increase the risk of nutritional deficiencies. Key Messages: Studies by many authors indicate a higher incidence of food deficiency among people with excessive body weight, than in people with normal body weight of the same age and same sex. Monitoring the concentration of minerals and vitamins in blood serum is a good practice in the treatment of obesity. The proper nutritional status of the body affects not only the state of health but also the effectiveness of therapy. The aim of the review was to present the issue of malnutrition in the context of obesity.

Evaluation of nutritional status of children aged 7-12 in terms of overweight and obesity.

Background: The occurrence of overweight and obesity in childhood promote many diseases, causing complications both in childchood and in adulthood. Objective: The aim of study was to evaluate body mass index (BMI) of children aged 7-12 from primary schools in Siedlce (city in Poland) and determining the risk of obesity in this group. Material and methods: Subjects were 450 primary school children aged 7-12 years living in Siedlce, studied between 2017-2018, and consisted of 269 (59.7%) girls and 181 boys (40.3%). The BMIs were determined and total body composition was measured by a SC-240 Analyzer. Result were compared with percentile grids elaborated in the OLAF study. Results: The average BMI for 7-year-olds was 16.6, (16.8 for girls, c50=15.6 and 16.2 for boys, c50=15.8), whilst for 12-year-olds they were 19.0, (19.7 for girls, c50=18 and 19.1 for boys, c50=18). Despite 70.2% of average BMI values being correct, individually abnormal clusters were observed within the girl and boy grouping. We found that 5.8% children were underweight (6.7% girls and 4.4% boys), whilst 16.7% were overweight (19.7% girls and 12.1% boys), and those obese were 7.3% (8.2% girls and 6.1% boys). Conclusions: The BMI to height ratio was found to be correct in most subjects, nevertheless it was 12% higher in boys than girls. Abnormal BMIs were found in 1/3 of children, wherein overweight and obesity were more frequent than those being underweight. Excessive body mass was found in 24% of all children, with the highest rates being in 9-year-old girls (30.2%) and 12-year-old boys (29.4%). It is necessary to constantly monitor the BMI among school children.