Words in Context 2 Complete the passage with words from Reading 2.  Doctors recognize, however, that stopping an illness before it even begins produces a better outcome than treating someone who has already contracted a disease. For this reason, doctors are trained in Preventive medicine. This approach, which is aimed at increasing the public's understanding of the connection between lifestyle and health, appears to be working. Research shows that awareness of this connection leads to changes in behavior. A doctor might suggest a more healthy diet or more aerobic exercise, for example. In fact, educating patients about better health is now a/an key part of a doctor's duties and responsibilities.