You've finished your Valentine's Day box of chocolates, and your sweet tooth is still not satisfied.

But should you feel guilty about eating chocolate? Probably not, if you watch what kinds of chocolate you eat and how much.

Research suggests that antioxidants found in chocolate - the same ones also found in green tea, red wine, orange juice, spinach, onions, corn, strawberries, bananas and apples - reduce the risk of cancer and heart disease. Antioxidants prevent cell damage from toxins or free radicals, which our bodies produce and are thought to accelerate the aging process.

Also, your body converts the stearic acid in chocolate into a potentially heart-healthy monounsaturated fat. Monounsaturated fats do not increase your LDL (bad) cholesterol, and there is some evidence that they may raise your HDL (good) cholesterol that protects against heart disease.

But eating too much of a good thing can be detrimental. The Center for the Science in the Public Interest, citing a study in an issue of the American Journal of Clinical Nutrition linking stearic acid to a higher risk of heart disease, says you should not be fooled into believing that chocolate is a healthy treat.

Chocolate is no health food. We can't let chocolate off the hook. It's high in fat, which means it's high in calories, said Bonnie Liebman, director of nutrition for the Center for Science in the Public Interest, a nonprofit organization that advocates food safety and nutrition.

Tips for chocolate lovers

If you're a big chocolate eater, here are some tips on how to satisfy your sweet tooth without adding a ton of calories and fat to your diet:

Avoid chocolate products that say hydrogenated oils on the label. The hydrogenation process (turning oils into a solid) creates trans fats, a fatty acid linked to heart disease. Total fat content is also listed on the label.
Try dark chocolate, which is richer in antioxidants and stearic acid than milk chocolate.
Use chocolate products that are lower in calories and fat, such as chocolate-flavored syrup and cocoa power, which have most of the cocoa butter removed.
You only need a little chocolate to get the job done. Eat a small amount of miniature size candies instead of big bars.
What is chocolate's appeal?

Americans ate an all-time high of 3.3 billion pounds of chocolate in 1998, with a record high of about 12 pounds per person, according to U.S. Department of Commerce statistics compiled by the Chocolate Manufacturers Association.

The same antioxidants in chocolate can be found in some fruits, vegetables and beverages, and olive oil has the same heart-healthy monounsaturated fat. But given the choice between broccoli and a candy bar, which would you eat? What is it about chocolate that makes you feel good?

The powerful combination of fat, sugar and chemicals in chocolate gives you a physical and mental lift, says nutrition expert Elizabeth Somer in her book, Food and Mood. The sugary taste sparks your body's release of endorphins, a substance made of amino acids that acts like morphine. Your nervous system also gets a kick from theobromine, caffeine and phenylethylamine, a compound that may help your body produce feelings similar to being in love.