In everything you choose, choose the best. Just like picking the best grapes and discover the keys to buying a fresh and healthy bunch. Sweet, crunchy grapes makes a terrific low-calorie snack. They offer powerful antioxidant, anti cancer, and heart-protective compounds. For best nutrition, buy several varieties of grapes. Green (aka white), red, and purple grapes all contain important plant chemicals, like quercetin and catechins. Red and purple grapes also offer beneficial pigments called anthocyanins. Significant of amount of all these compounds are concentrated in the skin and seeds of grapes. The nutrients in juicy grapes protect you from heart disease and cancer.