" the other way to initiate the cancer process, according to these researchers, is to increase the levels of insulin and blood sugar in the circulation itself. Insulin resistance would do that. Thus whatever is causing insulin resistance would be promoting the transformation of healthy cells into malignant, metastatic cells by increasing insulin secretion and elevating blood sugar and telling the cells to take up increasingly more glucose for fuel. This leads those like Cantley and Thompson directly back to sugar. As Cantley has said, sugar “scares” him, for precisely this reason. If the sugars we consume—sucrose and HFCS specifically—cause insulin resistance, then they are prime suspects for causing cancer as well, or at the very least promoting its growth. "

― Gary Taubes , The Case Against Sugar