Often left to be nothing more than a rose-shaped garnish on your restaurant salad, radishes are extremely nutritious, containing nearly a third of your daily recommended amount of vitamin C. Cancer-fighting tip: Eat radishes with broccoli. Radishes contain an enzyme called myrosinase, which boosts your body's absorption of the cancer-fighting compounds found in broccoli. And don't neglect the leaves! Radish leaves contain more vitamin C, calcium and protein than radishes themselves. Toss the leaves into a pesto, stir-fry, or your next smoothie.