Purpose of Review <p>Nutrition is a modifiable factor in breast cancer survivorship that can affect recurrence risk, treatment tolerance, comorbidities and quality of life. This review synthesizes current evidence on nutrition and dietary strategies during and after treatment, focusing on dietary patterns, nutrients, supplements, and challenges in survivorship care.</p> Recent Findings <p>Evidence consistently supports dietary patterns, emphasizing fruits, vegetables, whole grains, and high nutrient foods, including Mediterranean and plant-based diets which have been associated with improved survival. Adequate protein and fiber intake support lean mass and metabolic health. Conversely, alcohol, processed meats, ultra-processed foods and sugar-sweetened beverages have been linked with adverse outcomes. Supplement use is common but requires caution due to potential interactions and limited evidence.</p> Summary <p>Nutrition is a vital and yet underutilized component of survivorship care. Significant gaps remain in randomized trials, diverse populations, and implementation strategies. Future research should focus on personalized nutrition, biomarker-driven interventions, and scalable, multidisciplinary approaches to integrate diet into survivorship care.</p>