Get glowy again with broccoli When sleepless nights leave you feeling - or looking - a little blah, reach for this crunchy green. A half-cup serving contains more than two-thirds of your recommended intake of vitamin C, a powerful antioxidant that helps protect the immune system.

Sip cocoa for your heart Another reason to enjoy this tasty treat: It helps to maintain healthy blood vessels, which support healthy circulation and a healthy heart.

Oranges, a wrinkle-free fruit for a wrinkle-free you Besides being the most touted way to get your vitamin C, this juicy fruit is chock-full of skin-firming collagen. Add one to your breakfast to one-up those who choose injectables. Cellular renewal takes place within deeper dermal layers, having many experts believe a nutritional approach will provide the best results for healthy skin aging.

Go fish to ward off disease Phish Food might cheer you up, but new studies praise the sea creatures' head-to-toe benefits. Omega-3s can help prevent cancer and quench the fire of inflammation, which weakens the immune system.

Get a boost from flaxseeds and flaxseed oil For vegetarians, those who don't like fish, and parents with children who balk at seafood for dinner, flaxseed oil has a different type, but near equal amount omega-3s. Add a tablespoon to smoothies, or sprinkle ground flaxseeds into cereal, oatmeal, homemade baked goods, or on top of vegetables.

Clean up with a cup of spinach Not only did Popeye grow big and strong, we're willing to bet he was largely disease-free. Dark-colored fruits and veggies - spinach among them - are the best way to get provitamin A carotenoid, which converts to vitamin A in our bodies, and helps to keep the digestive system as spotless as you'd like your kitchen floor to be.

Grow thick skin with sweet potatoes You can now say yes to that side of sweet potato fries guilt-free. With their deep orange color, these spuds too make an appearance on the list of best foods in which to find vitamin A. Since they also contain mineral copper, which facilitates collagen production.

Chow down on chicken to stay young Chicken, again? Don't feel bad about serving this standby - when you put it on the table, you're holding up a stop sign to the aging process. Poultry is high in zinc and selenium, two minerals that balance hormones and promote collagen production.