Current Organizations / Institutes

The organizations/institutes from the scholar's latest article


Marta Jastrzębska-Mierzyńska has a total of 19 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Estimation of the Impact of Abdominal Adipose Tissue (Subcutaneous and Visceral) on the Occurrence of Carbohydrate and Lipid Metabolism Disorders in Patients with Obesity—A Pilot Study

    by Katarzyna Witczak-Sawczuk, Lucyna Ostrowska, Urszula Cwalina, Joanna Leszczyńska, Marta Jastrzębska-Mierzyńska, Marcin Krzysztof Hładuński

    Obesity represents a significant global public health concern. The excessive accumulation of abdominal adipose tissue is often implicated in the development of metabolic complications associated with obesity. Our study aimed to investigate the impact of particular deposits of abdominal adipose tissue on the occurrence of carbohydrate and lipid metabolism complications. We established cut-off points for visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), and the VAT/SAT ratio at which selected metabolic complications of obesity-related diseases (disorders of carbohydrate and/or lipid metabolism) occur. We conducted an observational study involving 91 subjects with first- and second-degree obesity, accounting for gender differences. Anthropometric measurements were taken, body composition analysis (BIA) was conducted, and biochemical determinations were made. Our findings suggest that commonly used parameters for assessing early metabolic risk, such as BMI or waist circumference, may overlook the significant factor of body fat distribution, as well as gender differences. Both visceral and subcutaneous adipose tissue were found to be important in estimating metabolic risk. We identified the cut-off points in women in terms of their elevated fasting glucose levels and the presence of insulin resistance (HOMA-IR: homeostasis model assessment of insulin resistance) based on SAT, VAT, and the VAT/SAT ratio. In men, cut-off points were determined for the presence of insulin resistance (HOMA-IR) based on VAT and the VAT/SAT ratio. However, the results regarding lipid disorders were inconclusive, necessitating further investigation of a larger population.


  • Open Access

    Assessment of the Clinical Condition and Way of Patients’ Nutrition before and after Laparoscopic Sleeve Gastrectomy

    by Marta Jastrzębska-Mierzyńska, Lucyna Ostrowska, Katarzyna Witczak-Sawczuk, Hady Razak Hady

    One of the most commonly performed bariatric procedures is the laparoscopic sleeve gastrectomy (LSG). It is highly effective in reducing body weight, but it carries the risk of developing nutritional deficiencies and their consequences. The aim of the study was to determine the clinical condition of obese patients after LSG in terms of nutritional status, metabolic disorders, and way of nutrition. Thirty participants (15 women and 15 men) took part in the study. A statistically significant reduction in the total body fat mass (women by 37.5% p < 0.05, men by 37.06% p < 0.05) and total fat free mass (women by 10% p < 0,05, men by 12.5% p < 0.05) was demonstrated 6 months after LSG. Moreover, insufficient protein intake has been shown in over 73% of women and 40% of men. Before and 6 months after LSG, insufficient intake of calcium, magnesium, potassium, folate, vitamin D, and iron was observed. Six months after the LSG, significant decreases of fasting glucose (p < 0.05), insulin (p < 0.05), TG (p < 0.05), and AST (p < 0.05) concentrations, were observed in both groups. Optimization of nutrition in order to prevent nutritional deficiencies and their complications is a key element of the therapy of obese patients treated surgically.


  • Open Access

    The effect of consumption of selected nutrients on the occurrence and course of depression

    by Dominika Krasowska, Marta Jastrzębska-Mierzyńska, Michał Kwiatkowski, Adam Hermanowicz

    Depression is a disease characterized by both mental and somatic disorders. The 21st century turned out to be the time when depression became a real health threat not only to individuals but also to entire societies. There are many theories pointing to the causes of depression, but these immediate causes are still not definitively clear. Equivalent importance of neuroanatomical and psycho-social factors is indicated. Among the theories considered so far, there are biological, hormonal, neurotransmitter-related, describing the malfunctions of the limbic system and hypothalamus, psychological theories. The studies conducted so far show that psychosocial factors play an extremely important role in the etiology of depression. Symptoms of depression are very complex and multifaceted, and may vary in severity. As a result of studies on the risk factors for depression, a relationship between the deficiency of individual nutrients and the manifestation of depressive disorders has been shown. The aim of the study is to present the influence of particular nutrients on the occurrence and course of depression. A properly balanced diet, both quantitatively and qualitatively, has a positive effect on reducing the risk of depression, as well as improving the condition of people who already suffer from it. Among the nutrients of particular importance are vitamin D, magnesium, folic acid, tryptophan, zinc, omega-3 fatty acids, cobalamin, and some probiotic microorganisms.

  • Dietetic preparation of obese patient to bariatric treatment

    by Marta Jastrzebska-Mierzynska, Lucyna Ostrowska, Emilia Duchnowska, Hady Razak Hady

  • Open Access

    The use of contraception for patients after bariatric surgery

    by Lucyna Ostrowska, Medard Lech, Ewa Stefańska, Marta Jastrzębska-Mierzyńska, Joanna Smarkusz

    Obesity in women of reproductive age is a serious concern regarding reproductive health. In many cases of infertility in obese women, reduction of body weight may lead to spontaneous pregnancy, without the need for more specific methods of treatment. Bariatric surgery is safe and is the most effective method for body weight reduction in obese and very obese patients. In practice there are two bariatric techniques; gastric banding, which leads to weight loss through intake restriction, and gastric bypass, leads to weight loss through food malabsorption. Gastric bypass surgery (the more frequently performed procedure), in most cases, leads to changes in eating habits and may result in vomiting, diarrhea and rapid body mass reduction. There are reliable data describing the continuous increase in the number of women who are trying to conceive, or are already pregnant, following bariatric surgery. Most medical specialists advise women to avoid pregnancy within 12-18 months after bariatric surgery. This allows for time to recover sufficiency from the decreased absorption of nutrients caused by the bariatric surgery. During this period there is a need for the use of reliable contraception. As there is a risk for malabsorption of hormones taken orally, the combined and progestogen-only pills are contraindicated, and displaced by non-oral hormonal contraception or non-hormonal methods, including intrauterine devices and condoms.


  • Open Access

    The impact of bariatric surgery on nutritional status of patients.

    by Marta Jastrzębska-Mierzyńska, Lucyna Ostrowska, Hady Razak Hady, Jacek Dadan, Emilia Konarzewska-Duchnowska

    Introduction : Currently, surgical treatment is considered to be the most efficient method of dealing with morbid obesity. Aim: To evaluate changes in nutritional status after surgical treatment of obesity in the early postoperative period. Material and methods: The study included 50...


    • 1 January 2015
      • Vol. 66  (1) , 13-9

    Dietetic recommendations after bariatric procedures in the light of the new guidelines regarding metabolic and bariatric surgery.

    by Marta Jastrzębska-Mierzyńska, Lucyna Ostrowska, Diana Wasiluk, Emilia Konarzewska-Duchnowska

    The frequency of obesity occurrence is constantly increasing all over the world and becoming global epidemic. Facing the lack of the efficiency of conservative treatment, patients with II and III degree of obesity are qualified for surgical treatment; however, the efficiency of surgical treatment is connected with permanent change of nutritional habits and previous lifestyle of the patient. Modification of the way of nutrition, regardless of the type of bariatric procedure, should especially include the lowering of food energetic value and change of type, consistency and size of consumed food. Nutritional treatment after bariatric procedures is multistage. It includes clear liquid diet, full liquid diet, pureed diet, mechanically altered soft diet and regular diet. Gradual expanding of the diet protects gastrointestinal tract from chemical, mechanical and thermal irritation by the food. It also should prevent nutritional deficiencies. Significant influence on the result of surgical treatment of obesity has also regular intake of food, consuming products with high nutritional value, avoiding confectionery and fat products, consuming proper amounts of protein (60-80 g/day) and vitamin-mineral supplementation.


    • 1 January 2014
      • Vol. 65  (1) , 41-7

    Dietary habits of obese patients qualified for bariatric procedures.

    by Marta Jastrzebska-Mierzyńska, Lucyna Ostrowska, Hady Razak Hady, Jacek Dadan

    Patients with obesity, including morbid obesity, commit numerous dietary mistakes. They prefer high-energy diets, but of poor nutritional value. Patients qualified for bariatric procedures show deficiencies in vitamins and minerals due to insufficient intake of vegetables, fruit and whole grain products. Analysis of dietary habits in morbidly obese patients prepared for bariatric surgery, including assessment of eating style and frequency of consumption of certain products. The study group contained 39 people aged 18 - 65 years, who were surveyed with a questionnaire elaborated in the Department of Clinical Dietetics and Nutrition, Medical University of Bialystok. The following factors were assessed: number of meals, snacking between meals and eating at night, types of snacks eaten, and frequency of consumption of certain foods. Results were analyzed using Statistica 9.0. The majority of surveyed men (41.7%) ate three meals a day, whereas most women (40.7%) had at least 4 meals a day. Nearly 85% of the respondents admitted snacking between meals, mainly eating fruit, sweets and sandwiches. Whole grain cereal, milk and dairy products, fish, fruit, vegetables and pulses appeared in diet of patients qualified for treatment of obesity very rarely. Dietary habits of obese patients qualified for bariatric procedures are not consistent with recommendations. Therefore, these patients should receive nutritional education in order to foster proper eating habits that will help in the postoperative nutrition.


  • Open Access

    Assessment of dietary habits, nutritional status and blood biochemical parameters in patients prepared for bariatric surgery: a preliminary study

    by Marta Jastrzębska-Mierzyńska, Lucyna Ostrowska, Hady Razak Hady, Jacek Dadan

    Introduction: Morbid obesity needs to be treated by bariatric procedures. Proper dietary preparation of patients before surgery conditions their postoperative status. Aim: Assessment of dietary habits, nutritional status and biochemical parameters of the blood in patients being prepared...