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A study published in the May 2008 issue of the Journal of Nuclear Medicine proves that there is a biological cause in the brain for Social Anxiety Disorder. The lead author, Dr. van der Wee, M.D., Ph.D. said,

 

Our study provides direct evidence for the involvement of the brain’s dopaminergic system in social anxiety disorder in patients who had no prior exposure to medication… It demonstrates that social anxiety has a physical, brain dependent component.

 

The research involved tracing how serotonin and dopamine act upon the receptors in the brains of people with Social Anxiety Disorder. Serotonin and dopamine are neurotransmitters, or substances responsible for transferring signals from on neuron to another. If the neurotransmitters are out of balance, messages cannot get through the brain properly. This can alter the way the brain reacts to normal social situations, leading to Anxiety. 

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