We all know fruits and veggies that are bold and bright in color keep us healthy. But what colors are best? Red, for one. Health.com says we can't go wrong with these three red foods.

Red cabbage
It has has deep-red (almost purple) pigments containing 36 plant chemicals. Researchers say these may be useful for guarding against cancer, boosting brain function, and promoting heart health.

Beet juice
It has a chemical your body may convert into a compound capable of expanding blood vessels and lowering blood pressure, say British scientists. If this doesn't sound appetizing on its own, try mixing it into a smoothie.

Tomatoes
They have lycopene and beta-carotene -- antioxidants that can keep your heart young by lowering your cholesterol.

Of course, red isn't the only color you'll need to eat to stay healthy. It's important to incorporate other colors into your diet too.