New research has revealed that being sarcastic is actually pretty unhealthy.
A study of 2,300 heart attack survivors in the US found those who displayed sarcasm, cynicism, resentment, impatience or irritability were at a greater risk of suffering from a second heart attack within two years.
Researchers at the University of Tennessee believe it could be down to a link between negative emotions and the strain this puts on our health.
It was also revealed that those who are irritated or hostile to others are less likely to look after their health, more likely to smoke, drink and eat a poor diet.
The study followed the patients for two years and found a person's personality traits could impact the health of their heart.
"Hostile individuals have increased clotting times, higher adrenaline levels, above normal cholesterol and triglyceride levels, and increased cardiac reactivity," said the researchers.
"These known inflammatory factors may initiate cardiac events and increase poor clinical outcomes."
Meanwhile, a happier, upbeat and optimistic approach appears to have the opposite effect, reducing stress and blood pressure.
Scientists also believe having a more positive mindset can directly alter the levels of different hormones in the body.
For example, reducing stress hormones such as adrenaline and cortisol can be hugely beneficial to a person's physical and mental health.
Study author Tracey Vitori of the University of Tennessee said: "Hostility is a personality trait that includes being sarcastic, cynical, resentful, impatient or irritable.
"It's not just a one-off occurrence but characterises how a person interacts with people.
"We know that taking control of lifestyle habits improves the outlook for heart attack patients and our study suggests that improving hostile behaviours could also be a positive move."
If this isn't a reason to take a more positive and upbeat approach then we don't know what is!
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