Social media such as blogs are increasingly being used in the population and therefore represent a unique opportunity to improve knowledge transfer in health. The main objective of this project was to explore women's perceptions about the use of healthy eating blogs written by a dietitian as a tool to improve their dietary habits. To maximize the identification of beliefs, a theoretical model combining the Theory of Planned Behavior and the Technology Acceptance Model was used. Participants were interviewed individually and in groups of four to six women. The main results showed that a blog visually appealing, comprehensive, including recipes and well-structured could help increase its relevance and use in women. The work of this master’s degree thesis is the first step towards the creation of a blog that will be tested to determine the feasibility of a nutritional intervention using this type of knowledge translation tool.