Is there a correlation between fasting blood glucose levels or A1c and incidence of cancer?tThere should be since cancer feeds on glucose but I have never found any study that supports that theory.
I doubt if there is any correlation. Even though cancer cells feed on the glucose, elevated glucose does not cause cancer. A simple analogy would be pregnancy. Cancer cells and human fetuses actually have extremely similar characteristics including a heavier feeding on glucose. But elevated glucose will not make a women pregnant. When the fetus is created though the developing fetus will utilize the available glucose at a higher rate than the mother.