The tasty green florets of broccoli are ripped with sulforaphane, a compound that seems to help keep high blood sugar goons on their best behavior, so they do less damage. When your blood sugar is chronically high, it can damage the cells of your heart, eyes, kidneys, and nerves. But in a recent petri-dish study, adding sulforaphane to a mix of blood vessel cells and glucose cut oxidation (read damage) by as much as 73 percent. More research is needed to see if sulforaphane in the diet is as protective. But we already know that the compound is a super cancer fighter.