From the beginnings of the advertising form, the mass media made the greatest turnaround at the beginning of the twentieth century. It is impossible to imagine today's modern age, the twenty-first century, without a world without mass media. Created by human knowledge and skill, mass media have become an indispensable part of modern society, a form of business, record keeping, and analysis, and they have become part of today's need for public relations. Today's form of advertising through the mass media has opened up a new dimension of awareness of new and old well-known companies, subsidiaries, industries, brands and trends in the world. This paper consists of 9 chapters with different titles. The first chapter deals with the actual purpose of the thesis as well as the topic and objective that frame the topic. The second chapter deals with the dissemination of media, mass media and forms of advertising. After the introduction and importance of mass media itself and its forms, the next point of the thesis is about the past of media and the first significant forms of advertising. The way in which advertising campaigns were carried out and their effectiveness for the continuation of the whole are discussed in the fourth chapter, based on successful and less successful advertising campaigns in the Republic of Croatia at the beginning of the 20th century. The modern form of advertising through virtual networks is the next chapter, which deals with the serious presentation of advertising on the Internet, its presentation and its purpose and habit in the modern world. Virtual platforms are the next point of continuation, which deals with the use and advantages of different platforms such as (Instagram, Facebook and Twitter) and their simple, concise, but effective way of attracting the attention of users and their administrators. After the virtual platforms, the seventh chapter mentions the relationship between advertising and promotion of dietary and healthy products through Facebook platform i.e. social network. In addition, a review of the old known brand „Kraš“; "Životinjsko carstvo" is touched upon as a review of the old form of advertising and its sales effectiveness. Following the application of advertising will be a survey based on the respondents the frequency of viewing advertising by customers on the example of watching advertisements for healthy food products and the interest of viewers as well.