A new study concluded that pessimists are at risk of dying early compared to ordinary people who do not publicly adopt negative or positive views.
The British newspaper "Daily Mail" that the researchers concluded that those who have negative expectations about the present or future die two years earlier compared to ordinary people.
What was surprising, though, was the researchers found that feeling optimistic did not prolong life.
The research team from the Berghofer Institute for Medical Research in Brisbane, Australia said they believed the pessimists did not take good care of themselves, leading to a deterioration of their health early on.
The research team for the study, which was published in the journal Nature, examined a questionnaire that included 3000 participants aged 50 years and over.
The questionnaire was part of the "life orientation" test, which monitors the health of Australians between 1993 and 1995, and subsequent information was available until the end of 2009.
Participants were evaluated according to the optimistic-pessimistic scale, which depends on their approval or opposition to optimistic and pessimistic situations.
The study found that pessimists die earlier, and that they are more likely to die from heart disease and other causes, not including cancer.
"Pessimistic people may not take care of themselves and their health, they may think there is no point in following advice on diet or exercise," research team leader John Whitfield told ABC Australia.
"There are indications that feeling optimistic or pessimistic can have an effect on the brain and blood biochemistry and may cause arterial wall inflammation," he added.
