evidence: Fact: More research is needed to understand the relationship between sugar in the diet and cancer. All kinds of cells, including cancer cells, depend on blood sugar (glucose) for energy. But giving more sugar to cancer cells doesn't make them grow faster. Likewise, depriving cancer cells of sugar doesn't make them grow more slowly. [...] There is some evidence that consuming large amounts of sugar is associated with an increased risk of certain cancers, including esophageal cancer. Eating too much sugar can also lead to weight gain and increase the risk of obesity and diabetes, which may increase the risk of cancer. [...] - Goncalves MD, et al. Dietary fat and sugar in promoting cancer development and progression. Annual Review of Cancer Biology. 2019; doi:10.1146/annurev-cancerbio-030518-055855.