International
Mental stress, like what you might experience from public speaking, can lead to reduced blood flow in the hearts of people with otherwise stable coronary heart disease, and this may put them at higher risk of future heart attacks, according to US research. The researchers studied around 900 patients with stable coronary heart disease and found that around 16 per cent experienced mental stress-induced ischemia, or reduced blood flow, after being asked to perform a public speaking task. Over the next 5 years, the people who showed mental stress-induced ischemia also had a higher risk of cardiovascular death or heart attack.
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