'Be positive' is not merely a motivational punch line. People with high levels of cynical distrust are more likely to develop dementia and other health problems a new study reveals. Cynical distrust which is defined as the belief that others are mainly motivated by selfish concerns has been associated with other health problems such as heart disease. 'These results add to the evidence that people's view on life and personality may have an impact on their health' said study author Anna-Maija Tolppanen from University of Eastern Finland in Kuopio. 'Understanding how a personality trait like cynicism affects risk for dementia