Objective: To evaluate the knowledge of customers of a food supplement store about healthy eating and associated factors. Materials and Methods: This is an analytical, cross-sectional study with a quantitative approach. This study was carried out in a shop that markets food supplements in the city of Montes Claros-MG. Participants were selected by convenience and intentionally selected clients, who accepted to respond to the questionnaires, which were over 18 years of age. Questionnaires were used to evaluate socio-demographic and economic characteristics, life habits, physical activity level, smoking, alcohol consumption, weight loss treatment and Body Mass Index. To assess knowledge about healthy eating and the use of dietary supplements,...