Word: stressful
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Dates: during 1990-1999
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...Many of those people already have heart diseases of some kind, but many do not," said Kirby. While only 20 percent of the deaths occur among people under the age 65 and five percent to people under 45, young people are affected by the type of stress that proves fatal...
According to Kirby--who heads the cardiovascular laboratory at the SPH--arrhythmia sometimes results from stress. How the abnormal response of the heart is started is not understood by researchers yet, she said...
...research conducted by Kirby and her co-workers, which involves animal rather than human subjects, they are trying to find out how stress hormones, such as the neural hormone norepinephrine, released from nerve endings in response to certain stimuli, affect the functioning of the heart...
Scientists in this country and all over the world are working hard to explain the link between stress and heart failure. But, Kirby said, the research is hard to carry out and yields few conclusive results because experiments are conducted on animals, not humans...
...person in stress [artificially]," said Kirby...