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The many benefits of vigorous exercise


Narrator:       This is Science Today. A new study by the University of California, San Francisco, suggests that patients with prostate cancer who walk briskly for three hours per week experience lower rates of mortality. But researcher Erin Richman explains that vigorous activity is crucial because it also reduces the risk of heart disease, a condition that kills far more men than prostate cancer does.

Richman:       Many people are much more afraid of dying of cancer than they are of dying of heart disease even though the risk of dying of cancer is so much lower. But because most men will die of heart disease, not prostate cancer, it's even more important that these lifestyle factors such as physical activity will reduce their heart disease risk.

Narrator:       Richman says that people who are diagnosed with cancer are more likely to make important lifestyle changes than people who are diagnosed with heart disease, in spite of the difference in risk.

Richman:       We're told to be active for our heart, for our weight, all these other things. It's not something that people necessarily listen to because they hear it so much but when you're diagnosed with cancer, it's kind of a moment to wake people up and it's a teachable moment.

Narrator:       For Science Today, I'm Larissa Branin.