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Define how walking reduces the risk of heart disease

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Reference no: EM131723994

Question: Suppose a medical researcher finds a negative correlation between amount of weekly walking and the incidence of heart disease for people over 50 years old; in other words, people who walked more had a lower incidence of heart disease. One possible explanation for this observed association is that increased walking reduces the risk of heart disease. What are some other possible explanations?

Reference no: EM131723994

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