Epidemiologists conducting a study in a rural village in Italy have calculated a relative risk of 0.5 for developing heart disease by consuming olive daily. This indicates ________.
A. olive oil consumption may cut heart disease risk by half
B. olive oil consumption increases heart disease risk by 50%
C. 50% of the population in this village has diabetes and osteoporosis
D. half of the population in this village suffers from heart diseases
Answer: A
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