Breast cancer is the most frequently diagnosed malignant tumor among women in the world, especially in Indonesia. This is qualitative research with a descriptive exploratory approach that aims to explore the experiences of breast cancer patients related to their diet and eating patterns after being diagnosed with breast cancer. 15 participants in this study were selected using selected sampling. Research data were collected from December 2022 to January 2023. This study used semi-structured data analysis from Braun and Clarke. To ensure the rigor and trustworthiness of this study, the standards used by Korstjens and Moser were applied. There were three themes discovered covered in this study: (1) “Vegetarian is the main dietary choice” (2) “The desire to get better is the reason for a change in diet”, (3) “Prayer can increase a sense of optimism in life.” In conclusion, this study determined that most of the participants felt that a vegetarian diet can ensure better health and have reduced animal-based food, and increased their intake of plant-based food, especially fruits, and vegetables. Further study needs to be done to delve further into the impact of a vegetarian diet on breast cancer patients.

Keywords : Dietary Therapy, Breast Cancer, Plant-Based Diet