OTTAWA, April 23 (Xinhua) -- It is well known that eating too many high-fat
meals will clog arteries and increase heart attack risk, but most people cannot
imagine that even a single high-fat meal is enough to damage human
cardiovascular function, Canadian scientists found.
Canadian scientists found even a single
high-fat meal is enough to damage human cardiovascular function.(File
Researchers at the University of Calgary looked at
the stress responses of 30 students broken into two groups and found that the
group eating high-fat were more reactive to stress, recording greater reactivity
in several cardiovascular measures, a report by Canadian Television said Monday.
Both groups fasted the night before and one group
consumed a fast-food breakfast from McDonald's, the other ate dry cereal with
skim milk, cereal bars and non-fat yogurt. Both meals contained the same number
of calories. The low-fat breakfast included supplements to balance it for sodium
Two hours after eating the breakfasts, the two groups
were subjected to standard physical and mental stress tests, including a
mathematical test designed to be stressful, a public speaking exercise and
others, while having their cardiovascular responses measured.
The researchers then measured the subjects' blood
pressure, heart rate and the resistance of blood vessels. "Regardless of the
task, we recorded greater reactivity among those who consumed the high-fat meal
in several cardiovascular measures we recorded," says Fabijana Jakulj, a
University of Calgary student who used the study as the basis for her honors
Exaggerated or prolonged responses to stress are
thought to predict the development of high blood pressure.
Dr. Tavis Campbell, a specialist in behavioral
medicine and the study's senior author, says the study suggests a new and
damaging way that a high-fat diet affects cardiovascular function. "What's
really shocking is that this is just one meal," he says.
The study is published this month in the Journal of