It's not correct to say sugar is metabolized by insulin, though. Cells in the pancreas detect increased blood sugar levels, which then leads to subsequent insul

It's not correct to say sugar is metabolized by insulin, though. Cells in the pancreas detect increased blood sugar levels, which then leads to subsequent insulin release, which tells different kind of cells across the body to intake sugar and store energy in various ways. Those cells then may store sugar into fatty acids or glycogen, though it's been a while since I reviewed the biochemistry.