A healthy diet is the leading trend in the world, more and more people are looking for bio products, whole grains, 100% natural and with various markings. Leading companies have recognized the needs and desires of consumers and are more than ever began producing healthy products. What is crucial is that more and more consumers follow the new trends of a healthy diet, and they are trying in a large number of products to find exactly those whom they believe are truly healthy and natural. Increasing rate of patients with various autoimmune or other disease induce consumers to use food as a medicine, or to start a healthy diet. Some are looking for healthy products as they get sick and trying to cure themselves, while some just want to start a healthy living and think about what they bring in their bodies. Nowadays on the shelves can be found a range of healthy products e.g. Stevia, various teas, juices from aronia, goji berries, gluten-free products and similar products. In order the consumers can decide easier for a product, companies are using marketing strategies to differentiate their products from the competition and facilitate consumers choice. There are many ways of advertising a healthy diet and a variety of other methods that attract consumers in order to buy a product. It’s about advertising on the Internet, television, radio or the company may use a variety of home presentations such as this for many years made by company Herbalife. All mentioned forms of promotion are more less successful because people want health, slenderness and long youth. These are on one side modern needs and desires of consumers and on the other hand represent new business opportunities for various companies and entrepreneurs. The problem that arises is the misuse of marketing healthy diet. In fact, many companies have started their campaigns to promote a healthy life, although these products are full of sugar and are not at all healthy. In order to prevent misleading the consumers need to be well informed and educated. Ultimately, in the work will be presented examples of successful marketing of a healthy diet and an example of unethical marketing of one multinational company.