Obesity is a rapidly growing problem of public health on a worldwide scale, responsible for more than 60% of deaths associated with high body mass index. Recent studies underpinned the augmenting importance of the gut microbiota in obesity. Gut microbiota alterations affect the energy balance of the host organism; namely, as a factor affecting energy production from the diet and as a factor affecting host genes regulating energy expenditure and storage. Gut microbiota composition is characterised by constant variability, and is affected by several dietary factors, suggesting the probability that manipulation of the gut microbiota may promote leaning or prevent obesity. Our narrative review summarizes the results of recent years that stress the effect of gut microbiota in the development of obesity. It investigates the factors (diet, dietary components, lifestyle, and environment) that might affect the gut microbiota composition. Possible strategies for the prevention and/or treatment of obesity include restoring or modifying the composition of the microbiota by consuming prebiotics and probiotics, fermented foods, fruits, vegetables, and avoiding foods of animal origin high in saturated fat and sugar.

(1) Background: Foodborne diseases continue to affect millions of people around the world today, posing a huge challenge to public health. Our aim was to focus on the food safety knowledge and food hygiene knowledge of students at the University of Pécs, Hungary. (2) Methods: A quantitative, online, cross-sectional study was conducted between 15 February 2024 and 10 May 2024. Non-probability, convenience sampling was used. The target group consisted of first- and second-year BSc level degree students of the Faculty of Health Sciences at the University of Pécs (N = 214). The questions of the self-designed questionnaire include sociodemographic data, questions focusing on food safety knowledge, and questions to assess food hygiene knowledge. Statistical analysis was performed using descriptive and mathematical statistical analysis (p < 0.05). (3) Results: Participants were aware of foods that pose a food safety risk and were familiar with both the pathogens in food and the groups at risk of food contamination. In terms of knowledge, a higher proportion of second-year students answered correctly (p = 0.021; r = 0.657). A significant relationship was found between hygiene habits and age (p = 0.035) and place of residence, with most of the students living in dormitories not paying attention to food hygiene (r = 0.094; p = 0.046). (4) Conclusions: The level of knowledge of the students was not always satisfactory, so further research and education on this topic is essential to promote safe food consumption.