Go ahead! Give your Valentine chocolate! New research shows that chocolate really can do a heart some good. Chocolate contains a high concentration of some of nature's most potent antioxidants known as polyphenols, These amazing molecules have been found to lower bad (LDL) cholesterol, raise good (HDL) cholesterol and heal a broken heart, or at least the lining of the coronary arteries. What's more, scientists believe that they have now discovered the chocolate / love connection. They found that chocolate contains the same chemical that is released in the brain at moments of emotional euphoria including the feelings of love.