The idea that sugar directly “feeds” cancer is a common misconception. All cells—including cancer cells—use glucose (sugar) for energy, but eating sugar does not selectively fuel cancer growth or make tumors grow faster. Scientific evidence shows that excessive sugar can contribute to obesity, insulin resistance, and inflammation, which are risk factors for certain cancers, but moderate sugar intake as part of a balanced diet is generally considered safe. Maintaining a healthy weight, exercising, and eating a nutrient-rich diet are far more impactful for reducing cancer risk than eliminating sugar entirely.