Global Scientific Trends on Healthy Eating from 2002 to 2021: A Bibliometric and Visualized Analysis.

Diet has been recognized as a vital risk factor for non-communicable diseases (NCDs), climate changes, and increasing population, which has been reflected by a rapidly growing body of the literature related to healthy eating. To reveal a panorama of the topics related to healthy eating, this study aimed to characterize and visualize the knowledge structure, hotspots, and trends in this field over the past two decades through bibliometric analyses. Publications related to healthy eating between 1 January 2002 and 31 December 2021 were retrieved and extracted from the Web of Science database. The characteristics of articles including publication years, journals, authors, institutions, countries/regions, references, and keywords were assessed. The analyses on co-authorship, co-occurrence, and co-citation were performed and network visualization maps were constructed by VOSviewer. Major subdomains identified by bibliometrics were further discussed and analyzed. A total of 12,442 articles on healthy eating were identified. Over the past two decades, the annual global publications increased from 71 to 1764, showing a nearly 25-fold growth. The journal Nutrients published the most articles and The American Journal of Clinical Nutrition possessed the highest citations. The United States, Harvard University, and Hu, Frank B. were identified as the most productive and influential country, institution, and author, respectively. The co-occurrence cluster analysis of the top 100 keywords formed four clusters: (1) the food insecurity environment for youths highlighting the necessity and significance of implementing healthy eating in early life; (2) sustainable advantages of the Mediterranean diet; (3) the importance of an overall healthy lifestyle optimization leveraged by eHealth; (4) the challenges during the course of healthy eating against obesity, which are prominent in reflecting the knowledge structure, hotspots, and trends. Moreover, COVID-19, orthorexia nervosa, sustainability, microbiota, food insecurity, and e-health are identified keywords that represented the latest high-frequency keywords and indicated the emerging frontiers of healthy eating. This study indicates that the number of publications on healthy eating will increase in the future and that healthy dietary patterns and clinical applications of healthy eating will be the next hotspots in this research field.

Changes in diet, lifestyle, and Orthorexia Nervosa tendency during the COVID-19 pandemic: A web-based study.

OBJECTIVE: During the COVID-19 pandemic, our diet and lifestyle have changed significantly. In this study, it was aimed to determine the changes in diet, body weight and Orthorexia Nervosa (ON) tendency in the pandemic. METHOD: This cross-sectional study was carried out among adults (n = 945). An online questionnaire was used to determine nutrition, lifestyle factors and ON tendency (via Google Docs). The questionnaire was also shared on social media groups and pages (instagram, twitter and facebook) managed by registered dietitians. RESULTS: During the COVID-19 pandemic individuals' body weight and total food consumption increased by 51.0% and 57.2%, respectively. Increased screen time (OR: 1.912, 95% CI: 1.374-2.661 p < 0.001), sleeping time (OR: 3.630, 95% CI: 2.551-5.166 p < 0.001) and decreased physical activity (OR: 2.051, 95% CI: 1.198-3.509 p < 0.01) were associated with weight gain. The ON tendency increased in all groups according to the change in food consumption status (p < 0.05). CONCLUSIONS: Considering the ongoing pandemic, individuals should be provided with adequate nutritional support. It is very important to get that support from nutritionists in order to monitor and control body weight and ON tendency.