A new study has revealed red wine and dark chocolate not only taste great, but also have heart-healthy components.

Red wine contains resveratrol, which has been found to lower blood sugar and LDL or "bad" cholesterol. It also is a source of catechins, which can help improve HDL or "good" cholesterol and polyphenols, which may prevent the formation of toxic plaque that leads to Alzheimer's disease.

Dark chocolate with a cocoa content of 70 percent or higher is rich in flavonoids, which help prevent the buildup of plaque in the arteries. It also boosts the immune system and contains cancer-fighting enzymes.

According to Loyola University Health System preventive heart specialist Sara Sirna , other items that top the list of heart-healthy foods include nuts, fish, flaxseeds, oatmeal, black or kidney beans, walnuts and almonds and berries.