Assertion: anxiety disorder's anxiety | /r/HasProperty | necessary
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Source sentences:
text: Some anxiety is helpful and necessary to motivate us to act; for example, if you need to start an assignment that is due tomorrow or if you are in the woods and see a bear,” Holly Valerio, M.D., clinical assistant professor of psychiatry at the Center for the Treatment and Study of Anxiety in the University of Pennsylvania Perelman School of Medicine, tells SELF.