In the complex landscape of cancer research and treatment, the Warburg effect has emerged as a significant point of interest, describing the unique way in which cancer cells produce energy. This understanding has led to the exploration of dietary interventions, such as the ketogenic diet and fasting, as potential therapeutic strategies for cancer prevention. These interventions aim to exploit the Warburg effect, starving cancer cells of glucose and inhibiting their growth. This article delves into the scientific underpinnings of these dietary strategies, their potential benefits, and the research supporting their use. Furthermore, it explores how fasting can potentially enhance the effectiveness of chemotherapy, providing a comprehensive overview of these promising, yet still developing, approaches to cancer prevention and treatment.