[Comment] Happiness and unhappiness have no direct effect on mortality
What defines a good life? If in answering this question you included happiness in your list, you are not alone. Indeed, the pursuit and enjoyment of happiness is a common goal and desire in life for most people. Adults of all ages, including those in old age, frequently report the experience of happiness as a determinant of a good life.1 Since both happiness and health are crucial aspects of quality of life, medical work about the potential positive effects of happiness on a person’s health and longevity is a growing area that has received increasing attention in the past decade.