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BY Lauren Adams

Anxiety is a normal reaction to a perceived threat or stressful situation. It can range from mild nervousness to a full-blown panic attack. In some cases, it may be helpful; in others, it may not.

The nervousness you feel before a work presentation, for instance, might spur you to prepare for it a little better, giving you more confidence when the time comes to actually deliver it. But the fear you feel before cancer treatment...

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