MONDAY, Nov. 23, 2009 (HealthDay News) -- Men who bottle up their anger over unfair treatment at work could be hurting their hearts, a new Swedish study indicates.
Men who consistently failed to express their resentment over conflicts with a fellow worker or supervisor were more than twice as likely to have a heart attack or die of heart disease as those who vented their anger, claims a report in the Nov. 24 online edition of the Journal of Epidemiology and Community Health.
In fact, ignoring an ongoing work-related conflict was associated with a tripled risk of heart attack or coronary death, the study of almost 2,800 Swedish working men found.
"It is not good just to walk away after having such a conflict or to swallow one's feelings," said study co-author Constanze Leineweber, a psychologist at Stockholm University's Stress Research Institute.
The study did not specify good ways of coping with work-related stress -- "We just looked at the bad side of coping," Leineweber explained.
The study doesn't advocate being belligerent at work, Leineweber cautioned. "Shouting out, and so on, is not proper coping," she said.
But venting one's anger outside of the workplace didn't seem to take a cardiovascular toll, at least. "Getting into a bad temper at home" was not associated with an increased risk of heart attack or cardiac death, the study authors found.
The findings echo those from a study published last year in the journal Occupational and Environmental Medicine. That study, also from Sweden and involving more than 3,100 men, found that having an overbearing or incompetent boss boosted workers' odds for angina, heart attack and death.
Leineweber stressed that what is true for men might not be true for female workers. While the study included more than 2,000 women, too few of them had heart attacks or died of heart disease to allow conclusions to be drawn.
"Earlier studies have indicated that women use different coping strategies than men," Leinewaber said. "So for women, strategies such as going away and not saying anything might not be good."
Women in general appear to handle stressful situations better than men, noted Dr. Bruce S. Rabin, director of the Healthy Lifestyle Program at the University of Pittsburgh Medical Center.
"Social interaction, having people to talk to, is extremely important," Rabin said. "If you keep things to yourself, you have high levels of stress hormones. Women are more comfortable in social interactions than men. They talk more, while men tend to keep within themselves."
A study, conducted by the Swedish researchers in 2005, found that women did not have the same levels of cardiovascular risk factors as men, Rabin noted.
There is no one key to handling on-the-job stress, because the level of stress depends on an individual's environment, at work and in the home, he said.
"Work environment is important," Rabin said. "You need interaction between people so that everybody feels they can express their opinions about their work. You shouldn't come to work with a feeling that no one cares."
"And when you go home, it is very important to share your feelings with whomever you are sharing with," Rabin added. "Also, you should understand that children learn from the behavior of parents. You can have a meaningful effect on the long-term health of children by being good role models. The message is that the environment you culture can affect not only your health but also the health of those who are important to you."
There's more on on-the-job stress at the U.S. Centers for Disease Control and Prevention.