Too much research has been devoted to the science of stress, depression and the connection to disease and not enough to the biology of joy. If a greater emphasis was placed on why we don’t go to doctors when we are feeling optimistic, happy, and joyful, there would be less value and importance placed on the emotional states that coincidentally generate more money for those manufacturing medication.There are many ways to experience pleasure in our brains and happiness might be the one emotion that prevents and reverses the cascade of cellular events that lead to disease.