 For example, depressive realism posits an exaggerated positivity in all except those experiencing depressive disorders who see life as it truly is, and David Benatar theorises that more weight is generally given to positive experiences, providing bias towards an over-optimistic view of life.Emerging research shows that meaning in life predicts better physical health outcomes.Greater meaning has been associated with a reduced risk of Alzheimer's disease, reduced risk of heart attack among individuals with coronary heart disease, reduced risk of stroke, and increased longevity in both American and Japanese samples.