This “What Is Anxiety?” information sheet is a free, printable resource designed to help adults, teenagers and older children understand the causes, symptoms, and science behind anxiety. Created by the Centre for Clinical Interventions, it offers a clear, accessible explanation of anxiety based on the fight-or-flight response, and outlines how this survival mechanism can sometimes become overactive—leading to persistent worry, panic, or physical symptoms even when no real danger is present.
Using simple language and real-life examples, this two-page mental health resource explains:
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What anxiety is and how it differs from fear
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How the autonomic nervous system triggers physical changes during anxiety
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Common physical symptoms like rapid heartbeat, dizziness, sweating, and nausea
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The effects of anxiety on thinking, behaviour and concentration
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Why people may feel anxious for long periods, even without an obvious stressor
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How anxiety can become a problem and when to seek support
The sheet also explores biological and psychological causes of anxiety, including genetics, past experiences, and learned behaviour patterns.
This anxiety explainer is ideal for:
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Teens, adults and older children learning about mental health
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Counsellors, therapists and wellbeing professionals supporting clients with anxiety
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School PSHE lessons, youth groups and emotional wellbeing programmes
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Parents and carers explaining anxiety to young people
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CBT and psychoeducation sessions as an introduction to anxiety work
Whether you are experiencing anxiety yourself, supporting someone who is, or teaching others about mental health, this printable anxiety information sheet provides a strong foundation for understanding the emotional, physical and psychological effects of anxiety.
