Improvements to the diets of schizophrenic patient led to improvements in anthropometric measurements and biochemical variables and reduced the health risks caused by antipsychotic medications. Furthermore, we hypothesize that antipsychotic medications do not have any direct effect on leptin and ghrelin metabolism, and that changes in hormone metabolism may be attributable to changes in body weight.

It was observed that the development of food addiction in schizophrenic patients increased the risk of obesity and cardiovascular diseases, which were found to be at higher levels in these patients. Educational programs should be planned for these patients to acquire health dietary habits and to increase their physical activity levels, and an additional psychosocial support should be provided for patients with food addiction.

There were no consistent results in the clinical, immunological, microbiological, and epidemiological studies that investigated the relationship between schizophrenia and celiac disease. This presents a need for a larger scale study to confirm the presence of this suggested correlation between schizophrenia and celiac disease. The underlying mechanisms between the two diseases should be explored.

Purpose This study aims to examine the effects of the COVID-19 pandemic on the body weight, nutritional habits, physical activity, and food consumption of adults living in Turkey and evaluate the effects of changes in these health behaviours on body weight. Methods A cross-sectional study was conducted with an online questionnaire. Data were collected through social media platforms using the snowball sampling method. A self-reported questionnaire included socio-demographic information, anthropometric data, dietary habits, food consumption, and lifestyle changes. In this study, 4181 people were included. Logistic regression analysis was used to evaluate the variables associated with the increase in body weight. ResultsThe findings obtained in this study showed that the bodyweight of 58.5% of the participants increased during the COVID-19 pandemic, and this increase was the highest (66.3%) among the obese. The rate of those who stated that their physical activity decreased was 69.5%. The foods consumed the most by individuals were homemade desserts (54%), nuts (53.8%) and fresh fruits (52.3%). Those whose serving size increased [OR = 4.98 (3.76-6.60)], those whose physical activity decreased or increased , respectively], and those whose number of main meals consumed increased [OR = 2.17 (1.72) − 2.75)], those with increased consumption of white bread (OR = 1.63 (1.20-2.22) and those with increased consumption of packaged sweet products [OR = 1.53 (1.23-1.89)] were more likely to gain weight. ConclusionThe results of this study show that there are significant changes in the body weight, physical activities, and eating habits of the participants during the COVID-19 pandemic. It is necessary to provide and follow-up specific guidance and support services for different groups to protect public health, improve and prevent nutrition-related diseases. KeywordsCOVID-19 pandemic • Nutritional habits • Change in health behaviours • Bodyweight changes • Physical activity

Objectives When the SARS-CoV-2 Virus was seen in Wuhan, China at the end of 2019, people's interest in vitamin and mineral supplement use has increased all over the world. This study aims to investigate changes in supplement use during pandemic on Turkish people living in Asia, America, Europe and Turkey. Methods An online cross-sectional survey was carried out among total 1678 individuals (women, n = 1329 and men, n = 369, Asia n = 139, America n = 507, Europe n = 292 and Turkey n = 760) older than 18 years in January 2021. An online questionnaire was taken by the volunteered participants. In this study, individuals were asked about dietary supplement use before and after the pandemic, which dietary supplements they used in the pandemic process, and why they were used. Results Individual's dietary supplement use before and during the pandemic were Asia (29.5% and 71.9%), America (40.6% and 75.7%), Europe (30.8% and 68.7%), and Turkey (21.3% and 62.2%) respectively. Vitamin C (74.7%), Vitamin D (58.2%) and multi vitamins (34.2%), Zinc (19.7%), Fish oil (17.9%), Probiotics (13.4%), and Propolis (11.1%) are the most commonly used dietary supplements in all regions. Individuals stated that improving the immune system was the main reason to use dietary supplements (53%). Individuals use it as a result of the diagnosis of nutritional deficiency (14%). The maximum use of dietary supplements in all regions is in between the ages of 31–50. Conclusions This study showed that dietary supplement use increased during the pandemic in all regions. Although most of the individuals stated that they took supplements to strengthen the immune system, it is known that supplements do not prevent Covid-19. However, it has been stated that the use of vitamin D, C, Zinc and selenium supplements may be beneficial, especially in those with diagnosed nutritional deficiencies and those with upper respiratory tract infections. Healthy individuals should be made aware of supplements and usage conditions. Funding Sources None