The topic of my thesis is Obesity as a serious issue to public health of European Union inhabitants and it is composed of two parts, theoretical and practical. In the theoretical part I focus on the definition of obesity, its kinds and various means of assessment of obesity. I further focus on individual macronutrients, water and alcohol, but also on prevention, causes and consequential treatment of obesity. For my bachelor thesis I set 4 goals, which I focus on in the practical part. The first goal was comparison of the level of obesity in the population of the Czech Republic and other EU states, the second was charting of knowledge of the general population about health risks associated with obesity, the third was a survey of eating habi...