I learned the citric acid cycle in biotechnology school and how cells work; about ADP and ATP and how the Cellular respiration (C6H12O6 + 6O2 -> 6CO2+6H2O) works.
I am interested in understanding why exactly too much glucose is harmful, e.g. when having diabetes.
What happens inside the cells so that the organs get damaged over time? Why can't the cells not simply "ignore" the needless glucose or convert it into energy?