We used linear regression analysis to show that growth of experimental astrocytoma was directly related to the levels of circulating glucose levels. It is clear from the figure that the higher the glucose level, the faster the growth. As glucose levels fall, tumor size (weight) and growth falls. .... In light of these findings, it is difficult to understand why some oncologists would encourage cancer patients to consume high calorie foods and drinks during their treatment. Glucose accelerates tumor growth!