Currently, healthy lifestyle and well-being are increasingly concerned in the youth nowadays, partly due to the frequent occurrence of noncommunicable diseases with the help of media. Along with consumers’ concerns, many researchers, doctors, and professors around the world have been studying health-related issues and determinants. As the result, until now, medication and nutrition are the most effective methods to approach the matter of health.

The goal of the thesis is to provide fundamental knowledge about the healthy eating lifestyle based on nutrition and food science, and a pathway for self-designed diets that suit users’ purposes best. On a larger scale, professional chefs and event caterers can utilize the mate-rials as a guideline to enrich their knowledge in planning a suitable menu for those under normal and abnormal circumstances. On a personal scale, individuals can lean on the guide-line to understand more about the healthy eating lifestyle.

In the theoretical segment, at the beginning of the thesis, the content refers to nutrition and food science in the complex and multilayered relationships with consumer perceptions and behaviors. This becomes the baseline for the application of the practical use which is de-scribed in the second part of the thesis. There are two scenarios that can exemplify the prac-tical use of the thesis.

The last chapter of the thesis presents the challenges of the thesis conduct, some discus-sions, and the potential of the introduced method.