Stock up on Brassica vegetables at the grocery store for some of the best disease-fighting food options around.

The group of Brassica vegetables includes broccoli, cabbage, Brussels sprouts, and cauliflower. Adding a few servings of these vegetables to your menu each week may help you live a longer life. Recent research has revealed that Brassica vegetables are rich in allyl isothiocyanate, a compound credited with inhibiting cancer cell proliferation.

Chop your vegetables up and cook them lightly to help preserve their disease-fighting nutrition. It's easy to sneak more vegetables into your diet by modifying your eating habits only slightly. Add chopped broccoli to pasta sauce. Instead of using iceburg lettuce, add chopped cabbage to sandwiches and tacos. And set raw broccoli and cauliflower next to your favorite low-fat dips, instead of snacking on pretzels or chips.

RealAge Benefit: Eating a diverse diet that includes 5 servings of vegetables per day can make your RealAge as much as 4 years younger.

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