This article is from the Epilepsy FAQ, by Andrew Patrick (andrew@calvin.dgbt.doc.ca) with numerous contributions by others.
Epilepsy occurs more frequently in some cultures. In Tanzania, 4% of
the population experiences severe seizure disorders. In this case,
genetic predisposition to lower seizure thresholds is known to exist.
In Canada, 1-2% of the population has Epilepsy.
 
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