The role of nutritionist in phytotherapy, foods with claims of functional and health properties and bioactive compounds

Abstract Objective This study aims to analyze the role of nutritionists in the fields of phytotherapy, Brazilian foods with claims of functional and health properties, and bioactive compounds. Method A narrative review was conducted based on recent scientific articles as well as resolutions and laws that regulate these practices. The study was structured into four sections. The first addressed the role of nutritionists in phytotherapy, prescription regulations, and the necessary precautions due to the toxicity of certain plants. The second explored concepts related to functional foods, highlighting the importance of prioritizing whole and natural foods to reduce the consumption of processed items and the risk of chronic diseases. The third emphasized regional and Brazilian foods, including non-conventional food plants and their bioactive compounds. Finally, the fourth section discussed the effects of bioactive compounds on health, diseases, and physical activity. Results A set of information was organized for nutritionists’ clinical practice in the mentioned areas. A relevant legislation regarding professional activities in phytotherapy, theoretical concepts, discussions on the use of isolated compounds versus the food matrix, and a compilation of key bioactive compounds from Brazilian foods and their physiological actions, were addressed. Conclusion There is a significant potential to explore Brazilian data that strengthens the understanding of nutritionists’ practices in these fields, in addition to encouraging the development of studies that guide safe prescriptions by professionals. With one of the richest biomes in the world, Brazil’s environmental diversity can be leveraged to further improve the population’s nutritional conditions.